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4-4

Cisco IAD2430 Series Integrated Access Devices Software Configuration Guide

OL-4306-03

Chapter 4 Configuring Voice over IP

VoIP Configuration Examples

The Cisco IAD is now configured to boot in the new configuration.

VoIP Configuration Examples

The actual VoIP configuration procedure you complete depends on the topology of your voice network.
The following configuration examples give you a starting point. Of course, you need to customize these
configuration examples for your own network topology.

Configuration procedures and examples are supplied for the following scenarios:

•

FXS-to-FXS Connection

•

Linking PBX Users with Digital E&M Trunk Lines over T1/E1 CAS

•

PSTN Gateway Access Using an FXO Connection

•

PSTN Gateway Access Using an FXO Connection in PLAR Mode

FXS-to-FXS Connection

The following example shows how to configure VoIP for simple FXS-to-FXS connections over
channelized T1/E1s. In this example, a very small company, consisting of two offices, has decided to
integrate VoIP into its existing IP network. One basic telephony device is connected to IAD-1; therefore,
IAD-1 has been configured for one POTS peer and one VoIP peer. Routers RLB-w and R12-e establish
the WAN connection between the two offices. Because one POTS telephony device is connected to
IAD-2, that Cisco IAD has also been configured for only one POTS peer and one VoIP peer.

Figure 4-1

illustrates the topology of this FXS-to-FXS connection example.

Figure 4-1

Channelized T1/E1 FXS-to-FXS Connection

Router

RLB-w

Serial port

IAD-1

IAD-2

95107

Dial peer 1

POTS

Dial peer 2

POTS

MLPPP over serial

MLPPP over channelized T1

1/0

1/3

Serial port

1/3

1/0

Serial port

1/0:0

Voice port

2/0

Voice port

2/0

128 kbps

IP cloud

Router

R12-e

Serial port

0/0

IAD

IAD

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Содержание 2431 - IAD Router

Страница 1: ...vices Software Configuration Guide THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE ALL STATEMENTS INFORMATION AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND EXPRESS OR IMPLIED USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS Text Part Number OL 4306 ...

Страница 2: ... DAMAGES CCDE CCENT Cisco Eos Cisco Lumin Cisco Nexus Cisco StadiumVision Cisco TelePresence Cisco WebEx the Cisco logo DCE and Welcome to the Human Network are trademarks Changing the Way We Work Live Play and Learn and Cisco Store are service marks and Access Registrar Aironet AsyncOS Bringing the Meeting To You Catalyst CCDA CCDP CCIE CCIP CCNA CCNP CCSP CCVP Cisco the Cisco Certified Internetw...

Страница 3: ...ting Help 1 6 Command Modes 1 7 Undoing a Command or Feature 1 8 Saving Configuration Changes 1 8 Upgrading to a New Cisco IOS Release 1 8 Cisco IAD2430 Series Deployment Scenarios 1 9 Where to Go Next 1 10 C H A P T E R 2 Using the setup Command Facility 2 1 Before Powering On Your Cisco IAD 2 1 The setup Command Facility 2 2 Configuring Global Parameters 2 2 Configuring Controller and Interface ...

Страница 4: ...DM to TDM 3 17 Configuring TDM to Analog Voice Port 3 18 Configuring TDM to Physical Serial Interface 3 18 Configuring a WIC 1DSU T1 E1 Serial WAN Interface Card 3 20 Configuring a WIC 1T or WIC 2T Serial WAN Interface Card 3 24 Configuring a VIC2 2FXO or VIC2 4FXO Voice Interface Card 3 24 Configuring a VIC2 2FXS or VIC2 4FXS Voice Interface Card 3 26 Configuring ATM T1 WAN Ports 3 28 Verifying Y...

Страница 5: ...ation Cisco 2431 1T1 E1 with WIC 2T A 6 Sample Configuration Cisco 2432 24FXS with VIC2 4FXO and QoS A 8 A P P E N D I X B Formatting the Flash Memory B 1 Formatting Procedures for Flash Memory B 1 Formatting Procedures B 1 Determining the File System on Flash Memory B 1 Formatting Flash Memory as a Class B Flash File System B 3 Formatting Flash Memory as a Class C File System B 4 File and Directo...

Страница 6: ...uration Guide OL 4306 03 Configuration Register C 6 Changing the Configuration Register Manually C 6 Changing the Configuration Register Using Prompts C 6 Console Download C 7 Command Description C 7 Error Reporting C 8 Debug Commands C 8 Exiting the ROM Monitor C 9 I N D E X ...

Страница 7: ...o contains information on using the Cisco IOS software to perform other configuration tasks such as configuring a VoIP interface and other features This guide does not provide complete configuration instructions See the Cisco IOS configuration guides and command references for detailed configuration instructions Audience This publication is designed for the person who will be responsible for confi...

Страница 8: ...ides an overview of the interface numbering conventions for the Cisco IAD2430 series IADs Also provides a basic understanding of Cisco IOS software Chapter 2 Using the setup Command Facility Describes how to use the setup command facility to configure your router Chapter 3 Configuring with the Command Line Interface Describes how to use the Cisco IOS software command line interface CLI to configur...

Страница 9: ...rmation see the monthly What s New in Cisco Product Documentation which also lists all new and revised Cisco technical documentation at http www cisco com en US docs general whatsnew whatsnew html Subscribe to the What s New in Cisco Product Documentation as a Really Simple Syndication RSS feed and set content to be delivered directly to your desktop using a reader application The RSS feeds are a ...

Страница 10: ...x Cisco IAD2430 Series Integrated Access Devices Software Configuration Guide OL 4306 03 Preface ...

Страница 11: ...1 1 Port Numbering Conventions page 1 5 Understanding Cisco IOS Software Basics page 1 5 Upgrading to a New Cisco IOS Release page 1 8 Cisco IAD2430 Series Deployment Scenarios page 1 9 Where to Go Next page 1 10 Identifying Cisco IAD2430 Models Figure 1 1 shows the front panel of the Cisco IAD2430 series IAD Figure 1 2 shows the front panel of the Cisco IAD2435 IAD Cisco IAD2430 24FXS IAD The Cis...

Страница 12: ... Panel Cisco IAD2431 8FXS IAD The Cisco IAD2431 8FXS provides eight analog FXS ports two 10 100BASE T ports and one T1 E1 WAN port The chassis has the following interfaces see Figure 1 3 RJ 21 analog voice interface One T1 E1 port One 10 100BASE T port One WIC VIC slot External flash memory AC and DC power adapter Figure 1 3 Cisco IAD2431 8FXS Chassis Back Panel 88839 CISCO IAD2400 231872 Cisco IA...

Страница 13: ...e Figure 1 4 RJ 21 analog voice interface One T1 E1 port Two 10 100BASE T ports One WIC VIC slot External flash memory AC and DC power inputs Figure 1 4 Cisco IAD2431 16FXS Chassis Back Panel Cisco IAD2431 1T1E1 IAD The Cisco IAD2431 1T1E1 provides one T1 E1 connection to a PBX one T1 E1 WAN port and two 10 100BASE T ports The chassis has the following interfaces see Figure 1 5 One T1 E1 ports Two...

Страница 14: ... 21 analog voice interface Two T1 E1 ports Two 10 100BASE T ports One WIC VIC slot External flash memory AC and DC power inputs Figure 1 6 Cisco IAD2432 24FXS Chassis Back Panel Cisco IAD2435 8FXS IAD The Cisco IAD2435 8FXS provides eight analog FXS ports two Fast Ethernet ports and one T1 E1 WAN port The chassis has the following interfaces see Figure 1 7 RJ 21 analog voice interface One T1 E1 po...

Страница 15: ...ernal flash memory port is numbered CF 0 The slot for WAN interface cards WICs and voice interface cards VICs is numbered slot 0 WIC and VIC interfaces are numbered by interface with this slot number and an interface number beginning with 0 and running from right to left 10 100BASE T Fast Ethernet ports are numbered Fast Ethernet 0 0 and Fast Ethernet 0 1 from right to left Understanding Cisco IOS...

Страница 16: ...on fundamentals see the Cisco IOS Configuration Fundamentals Configuration Guide Release 12 4 document If you are already familiar with Cisco IOS software proceed to Chapter 2 Using the setup Command Facility Getting Help Use the question mark and arrow keys to help you enter commands For a list of available commands enter a question mark Router To complete a command enter a few known characters f...

Страница 17: ... a new command mode Router enable Password enable password Router configure terminal Router config interface serial 0 0 Router config if line 0 Router config line controller T1 E1 slot port See second Note below Router config controller exit Router config exit Router SYS 5 CONFIG_I Configured from console by console The last message is normal and does not indicate an error Press Enter to get the R...

Страница 18: ...ture If you want to undo a command you entered or disable a feature enter the keyword no before most commands for example no ip routing Saving Configuration Changes You need to enter the copy running config startup config command to save your configuration changes to NVRAM so the changes are not lost if there is a system reload or power outage For example Router copy running config startup config ...

Страница 19: ...h Figure 1 9 on page 1 9 show some typical deployment scenarios for Cisco IAD2430 series IADs Figure 1 9 Analog FXS User Interface with Metro Ethernet Interface Figure 1 10 T1 E1 WAN Interface with Analog FXS User Interface IAD RJ 21 Ethernet Distribution panel 88997 Cisco IAD model number IAD2430 24FXS Analog telephones IAD WAN T1 RJ 21 Ethernet Analog telephones Distribution panel 88998 Cisco IA...

Страница 20: ...d mode restricts you to a set of commands If you have difficulty entering a command check the prompt and then enter the question mark for a list of available commands You might be in the wrong command mode or be using the wrong syntax To disable a feature generally enter the keyword no before the command for example no ip routing You need to save your configuration changes to NVRAM so that the cha...

Страница 21: ...uter manually or if you wish to configure a module or interface that is not included in the setup command facility proceed to Chapter 3 Configuring with the Command Line Interface for step by step instructions If you prefer to configure the router by using AutoInstall see the Using AutoInstall to Remotely Configure Cisco Networking Devices document Before Powering On Your Cisco IAD Before you powe...

Страница 22: ...d until the messages stop Any keys pressed during this time are interpreted as the first command typed when the messages stop which might cause the Cisco IAD to power off and start over It takes a few minutes for the messages to stop The messages look similar to the following example Note Much of the following example is largely for a Cisco IAD2431 1T1E1 IAD The messages vary depending on the Cisc...

Страница 23: ...ountry laws governing import export transfer and use Delivery of Cisco cryptographic products does not imply third party authority to import export distribute or use encryption Importers exporters distributors and users are responsible for compliance with U S and local country laws By using this product you agree to comply with applicable laws and regulations If you are unable to comply with U S a...

Страница 24: ... 4 Enter a hostname for the Cisco IAD Configuring global parameters Enter hostname Router IAD2435 The enable secret is a password used to protect access to privileged EXEC and configuration modes This password after entered becomes encrypted in the configuration Step 5 Enter an enable secret password This password is encrypted more secure and cannot be seen when viewing the configuration Enter ena...

Страница 25: ...rs page 2 5 Configuring Fast Ethernet and Serial Interface Parameters page 2 5 Configuring a 1 Port 4 Wire 56 kbps DSU CSU Card page 2 11 When you complete the setup steps for your interface modules go to the Completing the Configuration section on page 2 13 for directions on saving your configuration Configuring Controller Parameters Controllers can be either built in or on an interface module Co...

Страница 26: ...ess subnet mask 5 no shutdown 6 end DETAILED STEPS Command or Action Purpose Step 1 enable Example Router enable Enters privileged EXEC mode Step 2 configure terminal Example Router configure terminal Enters global configuration mode Step 3 interface type number Example Router config interface fastethernet 2 Router config if Enters the configuration mode for a Fast Ethernet WAN interface on the ro...

Страница 27: ... needed No serial cable seen Choose mode from dce dte dte If no cable is plugged into your interface card you must indicate whether the interface is to be used as DTE or DCE If a cable is present the setup command facility determines the DTE DCE status If the serial cable is DCE you see the following prompt Serial interface needs clock rate to be set in dce mode The following clock rates are suppo...

Страница 28: ...you accept the default or specify another LMI type the DLCI number is provided by the specified protocol Enter the DLCI number for this interface 16 Do you want to map a remote machine s IP address to dlci yes IP address for the remote interface 2 0 0 2 Do you want to map a remote machine s IPX address to dlci yes IPX address for the remote interface 40 1234 5678 Serial interface needs clock rate ...

Страница 29: ...et size must be powers of 2 128 SMDS Encapsulation The following is an example of a typical SMDS configuration Enter smds address for the local interface c141 5556 1415 We will need to map the remote smds station s address to the remote stations IP IPX address Enter smds address for the remote interface c141 5556 1414 Do you want to map the remote machine s smds address to IP address yes IP addres...

Страница 30: ...psulation configuration Would you like to enable multilink PPP yes Enter a remote hostname for PPP authentication Router Enter a password for PPP authentication Note The password which is used by the Challenge Handshake Authentication Protocol CHAP authentication process is case sensitive and must exactly match the remote router s password Frame Relay Encapsulation The following is an example of a...

Страница 31: ...interface 2 0 0 1 Do you want to map the remote machine s smds address to IP address yes IPX address for the remote interface 40 0060 34c6 90ed Configuring a 1 Port 4 Wire 56 kbps DSU CSU Card This section describes using the setup command facility to configure a 1 port 4 wire 56 kbps DSU CSU WAN interface card for example the WIC 1DSU T1 E1 Note The Cisco IAD2435 router is a fixed configuration r...

Страница 32: ...e number to call 1234567890 Configure IP on this interface yes IP address for this interface 1 0 0 1 Subnet mask for this interface 255 0 0 0 Class A network is 1 0 0 0 8 subnet bits mask is 8 Dedicated Mode The following is an example of a 1 port 4 wire 56 kbps DSU CSU dedicated mode configuration using the setup command facility Do you want to configure Serial0 0 interface yes Some encapsulation...

Страница 33: ... to the setup without saving this config 2 Save this configuration to nvram and exit If you answer 0 the configuration information you entered is not saved and you return to the Cisco IAD enable prompt Router Enter setup to return to the System Configuration Dialog If you answer 1 you return to setup without saving the configuration If you answer 2 the configuration is saved and you are returned t...

Страница 34: ...2 14 Cisco IAD2430 Series Integrated Access Devices Software Configuration Guide OL 4306 03 Chapter 2 Using the setup Command Facility Completing the Configuration ...

Страница 35: ...ng 1 Port ADSL SHDSL WAN Interface Card page 3 32 Configuring a VIC2 2BRI NT TE Card page 3 36 Saving Configuration Changes page 3 38 Follow the procedures in this chapter to configure the Cisco IAD manually or if you wish to change the configuration after you have run the setup command facility see the The setup Command Facility section on page 2 2 This chapter does not describe every configurati...

Страница 36: ... hostname and password perform the following steps SUMMARY STEPS 1 enable 2 configure terminal 3 hostname 4 enable secret password 5 line console 6 exec timeout 7 exit 8 end DETAILED STEPS Command or Action Purpose Step 1 enable Example Router enable Enters privileged EXEC mode Step 2 configure terminal Example Router configure terminal Enters global configuration mode Step 3 hostname Example Rout...

Страница 37: ...ing the new enable password Router exit Router con0 is now available Press RETURN to get started Router enable Step 5 line console Example Router config line console 0 Enters line configuration mode to configure the console port When you enter line configuration mode the prompt changes to Router config line Step 6 exec timeout Example Router config line exec timeout 0 0 If no input is detected dur...

Страница 38: ...wer on the Cisco IAD if there is a WAN connection on both ends and the Cisco IAD does not have a valid configuration file stored in NVRAM for instance when you add a new interface the Cisco IAD tries to run AutoInstall It can take several minutes for the Cisco IAD to determine that AutoInstall is not connected to a remote TCP IP host This section describes basic Fast Ethernet interface configurati...

Страница 39: ...show network clocks and show run commands do not display the default network clock which is selected by the default network clock algorithm Command or Action Purpose Step 1 enable Example Router enable Enters privileged EXEC mode Step 2 configure terminal Example Router configure terminal Enters global configuration mode Step 3 ip routing Example Router config ip routing Enables routing protocols ...

Страница 40: ...1 slot port 7 network clock select priority serial slot port 8 exit 9 Ctrl z DETAILED STEPS Command or Action Purpose Step 1 enable Example Router enable Enters privileged EXEC mode Step 2 configure terminal Example Router configure terminal Enters global configuration mode Step 3 network clock participate slot port Example Router config network clock participate WIC 0 Enters the controller into t...

Страница 41: ...ries to run AutoInstall It can take several minutes for the Cisco IAD to determine that AutoInstall is not connected to a remote TCP IP host This section describes basic configuration including enabling the interface and specifying IP routing Depending on your own requirements and the protocols that you plan to route you might need to enter additional configuration commands Before you begin config...

Страница 42: ...6 framing t1 e1 controller 7 framing t1 e1 controller 8 linecode ami b8zs hdb3 9 linecode ami b8zs hdb3 10 channel group channel group number timeslots range 11 interface type number 12 ip address ip address subnet mask 13 exit 14 Ctrl z DETAILED STEPS Command or Action Purpose Step 1 enable Example Router enable Enters privileged EXEC mode Step 2 configure terminal Example Router configure termin...

Страница 43: ... linecode ami b8zs hdb3 Example Router config controller linecode hdb3 Specifies the line code format for E1 and the linecode format for T1 Step 10 channel group channel group number timeslots range Example Router config controller channel group 0 timeslots 1 3 5 7 Specifies the channel group and time slots to be mapped For multiflex trunk interfaces only channel 0 can be configured Note Channel g...

Страница 44: ...controller SUMMARY STEPS 1 enable 2 configure terminal 3 ip routing 4 controller dsl slot port 5 mode atm t1 e1 6 controller t1 slot port 7 channel group channel group number timeslots range 8 interface type number 9 ip address ip address subnet mask 10 exit 11 Ctrl z DETAILED STEPS Command or Action Purpose Step 1 enable Example Router enable Enters privileged EXEC mode Step 2 configure terminal ...

Страница 45: ... controller t1 slot port Example Router config controller t1 0 2 Specifies the T1 interface for control Step 7 channel group channel group number timeslots range Example Router config controller channel group 1 timeslots 1 24 Specifies the channel group and time slots to be mapped Step 8 interface type number Example Router config controller interface serial 1 0 0 Configures each channel group as ...

Страница 46: ...eged EXEC mode Step 2 configure terminal Example Router configure terminal Enters global configuration mode Step 3 isdn switch type primary Example Router config isdn switch type primary net5 Optional see note Selects a service provider switch type that accommodates PRI Note You can configure the ISDN switch type in either global or interface configuration mode If you configure the switch type her...

Страница 47: ... 1 through 23 You can configure the PRI group to include all available time slots or you can configure a select group of time slots for the PRI group Note You can configure a maximum of 8 time slots in a PRI group on the IAD2435 IAD Step 6 isdn protocol emulate user network Example Router config if isdn protocol emulate network Configures the ISDN interface to serve as either the primary slave or ...

Страница 48: ... a law 9 no shutdown 10 exit 11 Ctrl z DETAILED STEPS Command or Action Purpose Step 1 enable Example Router enable Enters privileged EXEC mode Step 2 configure terminal Example Router configure terminal Enters global configuration mode Step 3 controller t1 e1 slot port Example Router config controller t1 0 2 Enters controller configuration mode for controller 1 the trunk controller for the T1 PBX...

Страница 49: ...ssigned to as many as 24 DS0 groups within the T1 E1 Step 6 Repeat Step 3 for each additional DS0 group After DS0 groups are defined exit CAS configuration mode Configures additional DS0 groups on the T1 E1 interface to the PBX Step 7 voice port slot port ds0 group no Example Router config voice port 1 D Enters voice port configuration mode and specifies the voice port that you want to configure T...

Страница 50: ...ce 2 pots description calls to Analog phone from PSTN destination pattern 4083333333 port 0 1 0 0 Configuring TDM Cross Connect For multiflex trunk interfaces using the time division multiplexing TDM connect function you can use the connect command to cross connect 1 two TDM groups from two controllers or 2 an analog FXS port and a DS0 group on a T1 Cross connecting is done differently for data an...

Страница 51: ...iguration mode Step 3 controller t1 e1 slot port Example Router config controller t1 0 2 Enters controller configuration mode for controller 1 the trunk controller for the T1 PBX port Note DS0 group number should be different from channel group number and TDM group number under the same controller Step 4 tdm group tdm group no timeslot timeslot list type Example Router config controller tdm group ...

Страница 52: ...ers privileged EXEC mode Step 2 configure terminal Example Router configure terminal Enters global configuration mode Step 3 ds0 group ds0 group number timeslots timeslot list type e m fxs loop start ground start fxo loop start ground start Example Router config controller ds0 group 1 timeslots 1 10 type fxs ground start Router config controller ds0 group 2 timeslots 11 24 type fxo loop start Conf...

Страница 53: ...igure terminal Example Router configure terminal Enters global configuration mode Step 3 tdm group tdm group no timeslot timeslot list Example Router config controller tdm group 1 timeslot 13 20 Configures a list of time slots for creating clear channel groups pass through for time division multiplexing TDM cross connect When configuring cross connect for data traffic only do not specify the type ...

Страница 54: ...ave a valid configuration file stored in NVRAM for instance when you add a new interface the Cisco IAD tries to run AutoInstall It can take several minutes for the Cisco IAD to determine that AutoInstall is not connected to a remote TCP IP host Before you begin configuring the synchronous serial interface make sure to do the following Connect a console to the Cisco IAD Power on the Cisco IAD SUMMA...

Страница 55: ... address and subnet mask to the interface Step 6 half duplex timer dcd drop delay value Example Router config if half duplex timer dcd drop delay 100 Specifies the time that the interface waits in controlled carrier mode See Table 3 1 for a list of half duplex timer commands Step 7 clockrate value Example Router config if clockrate 7200 To use a port in DCE mode connect a DCE cable and set the int...

Страница 56: ...monly used with EIA TIA 232 connections in IBM environments To enable NRZI encoding on an interface enter this command Step 11 exit Example Router config if exit Exits to global configuration mode Repeat Step 4 through Step 12 if your Cisco IAD has more than one serial interface that you need to configure Step 12 Ctrl z Example Router Returns to enable mode when you finish configuring the interfac...

Страница 57: ...00 57600 800000 9600 64000 1000000 14400 72000 1300000 19200 115200 2000000 28800 125000 4000000 32000 128000 148000 Table 3 3 Clock Rate Settings for 2 Port Synchronous Serial WAN Interface Card Timer bits per second Syntax bits per second Default Setting bits per second 1200 28800 72000 2400 32000 115200 4800 38400 125000 9600 56000 128000 14400 57600 19200 64000 Table 3 4 Clock Rate Settings fo...

Страница 58: ...d a new interface the Cisco IAD tries to run AutoInstall It can take several minutes for the Cisco IAD to determine that AutoInstall is not connected to a remote TCP IP host Note The Cisco IAD2435 router is a fixed configuration router and does not support interface cards Before you begin configuring interfaces on a WIC 1T or WIC 2T serial WAN interface card make sure to do the following Connect a...

Страница 59: ...e Step 3 voice port slot port Example Router config voice port 0 1 Enters voice port configuration mode See Port Numbering Conventions page 1 5 Step 4 connection trunk plar tie line plar opx string Example Router config voice port connection tie line 5550100 Configures the voice port connection mode type and the destination telephone number The plar value is used for private line automated ringdow...

Страница 60: ...e port signal groundstart Configures the signaling type for analog FXO voice ports The default is loop start Step 7 compand type u law a law Example Router config voice port compand type a law Configures the companding standard used to convert between analog and digital signals in PCM systems Step 8 cptone local Example Router config voice port cptone ca Configures the appropriate call progress to...

Страница 61: ...PS Command or Action Purpose Step 1 enable Example Router enable Enters privileged EXEC mode Step 2 configure terminal Example Router configure terminal Enters global configuration mode Step 3 voice port slot port Example Router config voice port 0 1 Enters voice port configuration mode See Port Numbering Conventions page 1 5 Step 4 signal groundstart loopstart live feed Example Router config voic...

Страница 62: ... parameters for your application you need the following information IP addresses and subnet masks VPI VCI numbers Any other information related to the routing protocol Perform the following steps to enter an ATM configuration Step 6 cptone local Example Router config voice port cptone ca Configures the appropriate call progress tone for the local region The default for this command is northamerica...

Страница 63: ... rt peak rate average rate burst 15 exit 16 Repeat Step 8 through Step 12 for each additional ATM PVC to be configured 17 no shutdown 18 exit 19 exit DETAILED STEPS Command or Action Purpose Step 1 enable Example Router enable Enters privileged EXEC mode Step 2 configure terminal Example Router configure terminal Enters global configuration mode Step 3 controller t1 e1 j1 slot port Example Router ...

Страница 64: ...alives without specifying the seconds the default time interval is 3 seconds Step 10 pvc name vpi vci Example Router config if pvc cisco 0 8 Enters atm virtual circuit interface atm vc configuration mode and configure a new ATM PVC by assigning a name optional and VPI VCI numbers The default traffic shaping is unspecified bit rate UBR the default encapsulation is ATM adaption layer 5 AAL5 Logical ...

Страница 65: ... 0 0 size max drops flushes Total output drops 0 Queueing strategy None 5 minute input rate 0 bits sec 0 packets sec 5 minute output rate 0 bits sec 0 packets sec 20486 packets input 368419 bytes 0 no buffer Step 13 encapsulation aal5ciscoppp aal5mux aal5nlpid aal5snap Example Router config if vc encapsulation aal5autoppp virtual template 1 Optional Configures the ATM adaptation layer AAL and enca...

Страница 66: ... configuration router and does not support interface cards Note ADSL SHDSL is a last mile access technology which has an asymmetrical data rate running over a single copper wire pair Note A 1 port ADSL SHDSL WIC must be installed in the router to match the DSL service to be configured Configuration Tasks See the following sections for configuration tasks for this feature Each task in the list is i...

Страница 67: ...ple Router config interface atm 1 0 Enters ATM configuration mode for the ATM interface in the specified slot and port Step 4 ip address ip address subnet mask Example Router config if ip address 172 16 74 3 255 255 255 0 Assigns an IP address to the ADSL SHDSL ATM interface Step 5 pvc name vpi vci Example Router config if pvc cisco 0 8 Enters atm virtual circuit interface atm vc configuration mod...

Страница 68: ...tation layer AAL and encapsulation type aal5ciscoppp Cisco PPP over AAL5 aal5mux AAL5 MUX aal5nlpid AAL5 NLPID aal5snap AAL5 LLC SNAP the default Step 9 exit Example Router config if vc exit Exits interface atm vc configuration mode Step 10 dsl operating mode adsl2 annex a annex m adsl2 annex a annex m ansi dmt auto itu dmt Example Router config if dsl operating mode adsl2 annex m Configure the AD...

Страница 69: ... Make sure that the ATM slot port and line protocol are up as shown in the following example Router show interface atm1 0 ATM 1 0 is up line protocol is up Hardware is DSLSAR with Alcatel ADSL Module MTU 4470 bytes sub MTU 4470 BW 800 Kbit DLY 2560 usec reliability 255 255 txload 1 255 rxload 1 255 Encapsulation ATM loopback not set Keepalive not supported Encapsulation s AAL5 PVC mode 24 maximum ...

Страница 70: ...error on bad ADSL access Int 0 Enable Reg 0x03 ADSL normal interrupt enabled ADSL error interrupt enabled Configuring a VIC2 2BRI NT TE Card ISDN BRI VICs provide digital connectivity for VoIP networks using the European Telecommunications Standards Institute ETSI Net3 switch type Note The Cisco IAD2435 router is a fixed configuration router and does not support interface cards BRI VICs present an...

Страница 71: ...ed EXEC mode Step 2 configure terminal Example Router configure terminal Enters global configuration mode Step 3 no isdn switch type switch type Example Router config no isdn switch type basic net3 Removes the ISDN switch type Step 4 tdm clock bri auto or tdm clock bri slot port export and or tdm clock bri slot port import t1 e1 atm bri onboard Example Router config tdm clock bri auto Configures a...

Страница 72: ...k settings Enter user to configure the port as TE and to function as a clock slave This is the default Enter network to configure the port as NT and to function as a clock master Activates the interface after the port configuration Step 8 line power Example Router config if line power Optional only for NT configured ports Turns on the power supplied from the port to a TE device Step 9 isdn protoco...

Страница 73: ...ommand or Action Purpose Step 1 enable Example Router enable Enters privileged EXEC mode Step 2 copy running config startup config Example Router copy running config startup config Saves the configuration changes to NVRAM so that they are not lost during resets power cycles or power outages Step 3 Ctrl z Example Router Ctrl z Returns to enable mode when you finish configuring the interfaces ...

Страница 74: ...3 40 Cisco IAD2430 Series Integrated Access Devices Software Configuration Guide OL 4306 03 Chapter 3 Configuring with the Command Line Interface Saving Configuration Changes ...

Страница 75: ...presence over WANs Unified voice and data trunking Plain old telephone service POTS Internet telephony gateways For more information on understanding and configuring VoIP see the Configuring Voice over IP document Prerequisites Before you can configure your Cisco integrated access device IAD to use VoIP you must first do the following Establish a working IP network Note For information applicable ...

Страница 76: ...ou configure an interface have the following information available Protocols you plan to route on the new interface IP addresses subnet masks network numbers zones or other information related to the routing protocol Timesaver Obtain this information from your system administrator or network plan before you begin configuring your Cisco IAD To configure a voice interface you must use configuration ...

Страница 77: ...and command references Step 6 If you have not already done so configure the network module or WAN interface card that you plan to use for IP traffic For instructions see your Cisco IAD hardware installation and software configuration guides or the configuration note for the network module or WAN interface card Step 7 To configure another interface enter the exit command to return to the Router con...

Страница 78: ...e FXS to FXS Connection The following example shows how to configure VoIP for simple FXS to FXS connections over channelized T1 E1s In this example a very small company consisting of two offices has decided to integrate VoIP into its existing IP network One basic telephony device is connected to IAD 1 therefore IAD 1 has been configured for one POTS peer and one VoIP peer Routers RLB w and R12 e e...

Страница 79: ...6 router igrp 888 network 10 0 0 0 Configuration for Router RLB w hostname rlb w Configure serial interface 1 0 interface Serial1 0 ip address 10 0 0 2 255 0 0 0 Configure RTP header compression ip rtp header compression ip rtp compression connections 25 fair queue 64 256 3 Configure serial interface 1 3 interface Serial1 3 ip address 20 0 0 1 255 0 0 0 Configure RTP header compression ip rtp head...

Страница 80: ...ssion ip rtp compression connections 25 fair queue 64 256 3 clockrate 64000 Configure IGRP router igrp 888 network 40 0 0 0 Linking PBX Users with Digital E M Trunk Lines over T1 E1 CAS The following example shows how to configure VoIP to link PBX users with digital E M trunk lines over T1 E1 Channel associated signalling CAS See the Configuring DS0 Groups for CAS section on page 3 14 In this exam...

Страница 81: ... voip destination pattern 569 session target ipv4 172 16 65 182 Configure the fastethernet interface interface fe 0 0 ip address 172 16 1 123 no shutdown IAD SLC Configuration hostname saltlake Configure digital voice ports controller T1 1 0 ds0 group 1 timeslots 1 24 type e m immediate start Configure pots dial peer 1 dial peer voice 1 pots destination pattern 569 port 1 1 0 Configure voip dial p...

Страница 82: ... users in Salt Lake City Utah using Router SLC Router SLC in Salt Lake City is connected directly to the PSTN through an FXO interface Figure 4 3 shows the topology of this connection example Figure 4 3 PSTN Gateway Access Using FXO Connection Example Note This example assumes that the company already has established a working IP connection between its two remote offices IAD SJ Configuration Confi...

Страница 83: ...y Utah can dial a local number and establish a private line connection in a remote location As in the previous example that is a PSTN gateway using an FXO connection Router SLC in Salt Lake City is connected directly to the PSTN through an FXO interface Figure 4 4 shows the topology of this connection example Figure 4 4 PSTN Gateway Access Using FXO Connection PLAR Mode Note This example assumes t...

Страница 84: ... 1 123 no shutdown IAD SLC Configuration Configure pots dial peer 1 dial peer voice 1 pots destination pattern 9 port 2 0 Configure voip dial peer 2 dial peer voice 2 voip destination pattern 14081111111 session target ipv4 172 16 1 123 Configure the voice port voice port 2 0 connection plar 14081111111 Configure the serial interface interface serial 0 0 ip address 172 16 65 182 no shutdown ...

Страница 85: ...A 6 Sample Configuration Cisco 2432 24FXS with VIC2 4FXO and QoS page A 8 Sample Configuration Cisco IAD2435 8FXS Current configuration 1089 bytes version 12 4 1 T service timestamps debug datetime msec service timestamps log datetime msec no service password encryption hostname 2435 8FXS logging queue limit 100 ip subnet zero no voice hpi capture buffer no voice hpi capture destination mta receiv...

Страница 86: ...psulation ppp ip http server ip classless call rsvp sync voice port 2 0 voice port 2 1 voice port 2 2 voice port 2 3 voice port 2 4 voice port 2 5 voice port 2 6 voice port 2 7 mgcp mgcp call agent 1 3 37 1 service type mgcp version 1 0 mgcp profile default dial peer cor custom dial peer voice 1 pots application mgcpapp port 2 0 dial peer voice 2 pots application mgcpapp port 2 1 line con 0 exec t...

Страница 87: ... receive maximum recipients 0 interface FastEthernet0 0 ip address 1 3 21 55 255 255 0 0 ip nat inside duplex auto speed auto interface FastEthernet0 1 ip address 1 2 111 1 255 255 0 0 duplex auto speed auto ip http server no ip http secure server ip classless ip route 0 0 0 0 0 0 0 0 1 2 0 1 call rsvp sync voice port 2 0 disc_pi_off input gain 10 output attenuation 10 playout delay minimum low cp...

Страница 88: ...ller id enable ren 3 disconnect ack voice port 2 2 cptone HK voice port 2 3 cptone HK voice port 2 4 cptone HK voice port 2 5 cptone HK voice port 2 6 cptone HK voice port 2 7 cptone HK voice port 2 8 cptone HK voice port 2 9 cptone HK voice port 2 10 cptone HK voice port 2 11 voice port 2 12 voice port 2 13 voice port 2 14 voice port 2 15 voice port 2 16 voice port 2 17 voice port 2 18 voice port...

Страница 89: ...estination pattern 1003 port 2 3 dial peer voice 5 pots destination pattern 1004 port 2 4 dial peer voice 6 pots destination pattern 1005 port 2 5 dial peer voice 10 voip destination pattern 2 session target ipv4 1 2 125 57 codec g711ulaw dial peer voice 7 pots destination pattern 1006 port 2 6 dial peer voice 8 pots destination pattern 1007 port 2 7 dial peer voice 9 pots destination pattern 1008...

Страница 90: ...console network clock select 1 T1 1 0 ip subnet zero backhaul session manager set vsc1_set client nft group vsc1_grp set vsc1_set isdn switch type primary ni no voice hpi capture buffer no voice hpi capture destination mta receive maximum recipients 0 controller T1 1 0 shutdown framing sf linecode ami channel group 0 timeslots 1 24 controller T1 1 1 mode cas framing esf linecode b8zs ds0 group 1 t...

Страница 91: ...o logging event link status ppp multilink multilink group 1 ip http server ip classless ip route 223 255 254 254 255 255 255 255 FastEthernet0 0 access list 101 permit ip host 10 1 1 1 host 10 1 1 2 no cdp run call rsvp sync voice port 1 1 1 mgcp mgcp call agent 1 3 37 1 service type sgcp version 1 5 mgcp quarantine mode process loop mgcp timer receive rtcp 2 mgcp profile default dial peer cor cus...

Страница 92: ...ing queue limit 100 logging buffered 5000 debugging no logging console ip subnet zero ip cef no ip domain lookup no voice hpi capture buffer no voice hpi capture destination mta receive maximum recipients 0 controller T1 1 0 shutdown framing sf clock source internal linecode ami channel group 1 timeslots 1 12 speed 64 controller T1 1 1 framing esf clock source internal linecode b8zs channel group ...

Страница 93: ...peed auto interface Serial1 0 1 bandwidth 768 no ip address encapsulation ppp load interval 30 ppp multilink multilink group 1 interface Serial1 1 1 bandwidth 768 no ip address encapsulation ppp load interval 30 ppp multilink multilink group 1 ip http server ip classless ip route 1 3 0 0 255 255 255 0 FastEthernet0 0 ip route 10 2 0 0 255 255 0 0 Multilink1 ip route 10 2 0 0 255 255 0 0 12 12 0 2 ...

Страница 94: ... voice port 2 3 voice port 2 4 voice port 2 5 voice port 2 6 voice port 2 7 voice port 2 8 voice port 2 9 voice port 2 10 voice port 2 11 voice port 2 12 voice port 2 13 voice port 2 14 voice port 2 15 voice port 2 16 voice port 2 17 voice port 2 18 voice port 2 19 voice port 2 20 voice port 2 21 voice port 2 22 voice port 2 23 mgcp mgcp call agent 1 3 37 1 service type mgcp version 1 0 mgcp src c...

Страница 95: ...ern 4088002 port 2 1 dial peer voice 4 pots destination pattern 4088003 port 2 2 dial peer voice 5 pots destination pattern 4088004 port 2 3 dial peer voice 6 pots destination pattern 4088005 port 2 4 dial peer voice 7 pots destination pattern 4088006 port 2 5 dial peer voice 8 pots destination pattern 4088007 port 2 6 dial peer voice 9 pots destination pattern 4088008 port 2 7 dial peer voice 10 ...

Страница 96: ...2 Cisco IAD2430 Series Integrated Access Devices Software Configuration Guide OL 4306 03 Appendix A Cisco IAD2430 Series Configuration Examples Sample Configuration Cisco 2432 24FXS with VIC2 4FXO and QoS ...

Страница 97: ...ectory Operations page B 5 For additional information on formatting flash memory see the Maintaining System Memory section in the Cisco IOS Configuration Fundamentals Configuration Guide Release 12 2 document Formatting Procedures for Flash Memory The following sections show formatting procedures for internal and external flash memory Formatting Procedures We recommend that you erase Class B or fo...

Страница 98: ...k Size State Copy Mode 1 31360K 6502K 24857K 0K Read Write Direct Slot0 Flash directory File Length Name status addr fcksum ccksum 1 6658376 c2430 is mz 0x40 0xE0FF 0xE0FF 6658440 bytes used 25454200 available 32112640 total 31360K bytes of ATA Slot0 Flash Read Write Chip information NOT available Note slot0 is not supported on the IAD2435 IAD External Card with Class C Flash File System The geome...

Страница 99: ...d 107308776 available 128188416 total 125184K bytes of ATA System Flash Read Write Chip information NOT available Internal Card with Class C Flash File System The geometry and format information is displayed in this format 11 show flash all length date time path 1 6658376 Mar 01 2008 04 27 46 c2430 is mz 25268224 bytes available 6664192 bytes used ATA Flash Card Geometry Format Info ATA CARD GEOME...

Страница 100: ...eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee erased Erase of slot0 complete Formatting Flash Memory as a Class C File System Use these formatting commands to do the following Format flash memory with a Class C flash file system Remove the files from flash memory previously formatted with a Class C flash file...

Страница 101: ... the IAD2435 IAD The following example shows sample output for copying a Cisco IOS file from an internal flash memory flash to an external flash memory slot0 Router copy flash c2430 is mz tmp slot0 Destination filename c2430 is mz tmp Erase slot0 before copying confirm nCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC...

Страница 102: ...ent mz 28184536 bytes used 100266024 available 128450560 total 125440K bytes of ATA System Flash Read Write Delete Files from Flash Memory To delete a file from flash memory enter the delete flash slot0 command followed by the squeeze flash slot0 command Note slot0 is not supported on the IAD2435 IAD When a file is deleted in the Class B flash file system the memory space occupied by the deleted f...

Страница 103: ...lash slot0 command The following example shows sample output from the more flash slot0 command on external Cisco flash memory Router more slot0 c2430 is mz 00000000 7F454C46 01020100 00000000 00000000 ELF 00000010 00020061 00000001 80008000 00000034 a 4 00000020 00000054 20000001 00340020 00010028 T 4 00000030 00050008 00000001 0000011C 80008000 00000040 80008000 00628A44 00650EEC 00000007 b D e l...

Страница 104: ...CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 6458584 bytes copied in 202 940 secs 31973 bytes sec The following example shows sample output for copying a configuration file ...

Страница 105: ...e output for displaying the geometry and format information of external Cisco flash memory Router show slot0 filesys ATA Flash Card Geometry Format Info ATA CARD GEOMETRY Number of Heads 4 Number of Cylinders 490 Sectors per Cylinder 32 Sector Size 512 Total Sectors 62720 ATA CARD FORMAT Number of FAT Sectors 31 Sectors Per Cluster 8 Number of Clusters 7796 Number of Data Sectors 62560 Base Root S...

Страница 106: ...00 00000000 ELF 00000010 00020061 00000001 80008000 00000034 a 4 00000020 00000054 20000001 00340020 00010028 T 4 00000030 00050008 00000001 0000011C 80008000 00000040 80008000 00628A44 00650EEC 00000007 b D e l 00000050 0000011C 0000001B 00000001 00000006 00000060 80008000 0000011C 00004000 00000000 00000070 00000000 00000008 00000000 00000021 00000080 00000001 00000002 8000C000 0000411C A 000000...

Страница 107: ...208 Mar 01 2008 00 04 08 c2430 is mz tmp 1580 drw 0 Mar 01 1993 23 48 36 config 128094208 bytes total 121626624 bytes free Router cd flash config Router dir flash Directory of flash config 1581 drw 0 Mar 01 2008 23 50 08 test config 128094208 bytes total 121626624 bytes free Remove a Directory To remove a directory from flash memory use the rmdir flash slot0 command Before you can remove a directo...

Страница 108: ... Integrated Access Devices Software Configuration Guide OL 4306 03 Appendix B Formatting the Flash Memory File and Directory Operations Directory of flash config No files in directory 128094208 bytes total 121630720 bytes free ...

Страница 109: ...me directory flash of flash memory in an internal slot Verifying that you are in the home directory Displaying the contents of the home directory Entering the config directory Verifying that you are in the config directory Entering the home directory of flash memory in an external slot slot0 Verifying that you are in the slot0 directory Returning to the home directory flash Verifying that you are ...

Страница 110: ...B 14 Cisco IAD2430 Series Integrated Access Devices Software Configuration Guide OL 4306 03 Appendix B Formatting the Flash Memory File and Directory Operations ...

Страница 111: ...lp you isolate or rule out hardware problems that you encounter while installing your router This appendix contains the following sections Entering the ROM Monitor Mode page C 1 ROM Monitor Commands page C 2 Command Descriptions page C 3 Configuration Register page C 6 Console Download page C 7 Debug Commands page C 8 Exiting the ROM Monitor page C 9 Entering the ROM Monitor Mode To use the ROM mo...

Страница 112: ...t display the context of a loaded image cookie display contents of cookie PROM in hex Command or Action Purpose Step 1 enable Example VG enable Enters privileged EXEC mode Step 2 configure terminal Example VG configure terminal Enters global configuration mode Step 3 config register value Example VG config config register 0x2102 Resets the configuration register settings Step 4 exit Example VG con...

Страница 113: ...an halt any command by pressing the Break key on a terminal If you are using a PC most terminal emulation programs halt a command when you press the Ctrl and the Break keys at the same time If you are using another type of terminal emulator or terminal emulation software see the documentation for that product for information on how to send a Break command Command Descriptions Table C 1 describes t...

Страница 114: ...lename specifies the source file containing the Cisco IOS image Other options include the following c Use cyclic redundancy check CRC 16 y Use Ymodem transfer protocol r Copy the image to DRAM for launch x Do not launch image on completion of download Note The IAD2435 IAD ROMMON supports only c and y dir device Lists the files on the named device for example rommon 5 dir flash Directory of flash 2...

Страница 115: ... default is 7 TFTP_TIMEOUT Overall timeout of the download operation in seconds The default is 2400 seconds TFTP_CHECKSUM Performs a checksum test on the image 0 no 1 yes The default is 1 FE_PORT Selects the FE Port for tftpdnld download 0 FE 0 1 FE 1 If FE_PORT variable is not mentioned then FE 0 will be used as default The syntax for specifying the variables is VARIABLE_NAME value After you spec...

Страница 116: ...d as hexadecimal The new virtual configuration register value is written into NVRAM but does not take effect until you reset or reboot the router Changing the Configuration Register Using Prompts Entering the confreg command without an argument displays the contents of the virtual configuration register and a prompt to alter the contents by describing the meaning of each bit In either case the new...

Страница 117: ...00 bps ensure that the PC serial port is using a 16550 universal asynchronous transmitter receiver UART If the PC serial port is not using a 16550 UART we recommend using a speed of 38 400 bps or less when downloading a Cisco IOS image over the console port Command Description The following are the syntax and descriptions for the xmodem console download command xmodem cyrx destination_file_name c ...

Страница 118: ... monitor debugging commands stack or k Produces a stack trace for example rommon 6 stack Stack trace PC 0x801111b0 Frame 00 FP 0x80005ea8 PC 0x801111b0 Frame 01 FP 0x80005eb4 PC 0x80113694 Frame 02 FP 0x80005f74 PC 0x8010eb44 Frame 03 FP 0x80005f9c PC 0x80008118 Frame 04 FP 0x80005fac PC 0x80008064 Frame 05 FP 0x80005fc4 PC 0xfff03d70 context Displays processor context for example rommon 7 context...

Страница 119: ...P 0x80005fac PC 0x80008064 FP 0x80005fc4 PC 0xfff03d70 FP 0x80005ffc PC 0x00000000 FP 0x00000000 PC 0x00000000 meminfo Displays size in bytes starting address available range of main memory the starting point and size of packet memory and size of NVRAM for example rommon 9 meminfo Main memory size 40 MB Available main memory starts at 0x10000 size 40896KB IO packet memory size 5 percent of main me...

Страница 120: ...C 10 Cisco IAD2430 Series Integrated Access Devices Software Configuration Guide OL 4306 03 Appendix C Using the ROM Monitor Exiting the ROM Monitor ...

Страница 121: ... 3 23 clock rate settings for 1 Port 2 Port Serial WAN interface card in synchronous mode 3 23 clock rate settings for 1 port 2 port serial WAN interface card in synchronous mode 3 23 clock rate settings for 2 port synchronous serial WAN interface card 3 23 clock rate settings for 4 port synchronous serial interface card 3 23 Commands controller mode 3 14 voice group 3 15 commands C 3 b C 4 b flas...

Страница 122: ... Analog FXS User Interfaces with Metro Ethernet Interface 1 5 1 9 Cisco IAD2430 24FXS Chassis 1 2 Cisco IAD2431 16FXS Chassis 1 3 Cisco IAD2431 1T1E1 Chassis 1 3 Cisco IAD2431 8FXS Chassis 1 2 Cisco IAD2432 24FXS Chassis 1 4 FXS to FXS Connection Example 4 4 Linking PBX Users with E M Trunk Lines Example 4 7 PSTN Gateway Access Using FXO Connection PLAR Mode 4 9 PSTN Gateway Access Using FXO Conne...

Страница 123: ...t port identification digital voice ports 3 14 stack command C 8 synchronous serial interface configuring 3 20 sysret command C 9 T T1 FT1 CSU DSU WAN interface WIC 2T card configuring 3 24 T1 WAN interface with analog FXS and FXO user interfaces 1 10 T1 WAN interface with analog FXS user interfaces 1 9 T1 WAN interface with T1 interface to PBX 1 10 tables Clock Rate Settings for 1 Port 2 Port Ser...

Страница 124: ...s Devices Software Configuration Guide OL 4306 03 FXS to FXS connections 4 4 linking PBX users with E M trunk lines 4 6 PSTN gateway access using FXO connections 4 8 PSTN gateway access using FXO connections in PLAR mode 4 9 X xmodem command C 4 C 7 ...

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