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Monitoring

MX100-TG User Manual

LineBuildOut

This field reflects the current setting of the

Cable Matching

parameter.

Clock Timing

This field reflects the current setting of the

Timing Source

parameter.

Payload

This field reflects the current setting of the

DS0 Type

parameter.

ISDN Call

The

ISDN Call Information

screen is shown in Figure 19. The

following sections provide additional details on the

ISDN Call

Information

screen.

Figure 19. ISDN Call Information Screen

Group ID

This field reflects the current setting of the ISDN

Group

setting.

TS (Time-Slot)

Содержание MX100-TG

Страница 1: ...MX100 TG USER MANUAL Release 3 0 ...

Страница 2: ...sor specified above but otherwise shall be without restriction as to time The Software including any images applets photographs animations video audio music and text incorporated into the Software is owned by New Rock Therefore you must treat the Software like any other copyrighted material for example a book or musical recording except that you may either a make one copy of the Software solely fo...

Страница 3: ...les 13 CHASSIS AND COMPONENTS 14 Chassis 14 Dimensions 14 Weight 14 Front View 15 Control Module 15 T1 E1 Module 17 Rear View 17 Power Supplies 17 Fans 18 INSTALLING THE MX100 TG 19 Site Preparation 19 Installing the Chassis 20 Connecting Main Power 21 Configuration 21 GETTING STARTED 22 Starting the MX100 TG 22 Understanding the MX100 TG Web GUI 24 Introduction 24 CONFIGURING THE MX100 TG 26 Syst...

Страница 4: ...P Screening Table 39 ISDN Settings 39 Flag 39 Group ID 41 D Channel 41 Switch Side 41 Hunting 42 Echo Cancellation 42 TDM Settings 42 DS1 Type 42 DS0 Type 42 Line Framing 43 Line Code 43 Timing Source 43 Cable Matching 43 Digit Adjust 43 Advanced Setting 43 Advanced System Settings 44 IP Config 46 SIP Settings 49 Border Proxy 51 EMS Config 53 lOG INFO 55 Resource 55 Login User Info 55 SIP Registra...

Страница 5: ...mote 60 Local 60 Codec 60 Ref Call Reference 60 State 60 CPN 65 CDPN 65 Timestamp 65 CallID 65 Message Log 66 Boot Log 66 TOOLS 68 Factory Config 68 Upgrade 69 FTP Server 69 User Name 70 Password 70 Filename 70 Change Password 70 Reboot 70 TROUBLESHOOTING 72 GETTING HELP 72 Checklist 73 Contacts 73 PARTS AND ACCESSORIES 74 MX100 TG Cables 74 Spares 74 ...

Страница 6: ...ign install configure and maintain wide area networks WANs and large scale communications applications It contains conceptual and practical information about how to use the MX100 TG gateway within your network CONVENTIONS USED IN THIS BOOK This book uses specific conventions to show the following types of information Number usage Replaceable input values Messages Read the following sections to lea...

Страница 7: ...MX100 TG User Manual 7 Cautions show information requiring extra attention ...

Страница 8: ...d eighty three is shown as 16 383 This avoids confusion between American and European punctuation conventions However a number that is internally manipulated by a computer is shown without punctuation or spaces For example notice how the value 65 535 appears in the following instruction without a space or a thousands separator within the number Specify 65535 as a maximum value Numbers with Differe...

Страница 9: ...git n Any decimal digit x Any alphabetic value such as x DOS where you substitute the correct drive letter for x Multiple letters A series of digits such as FIRST 2 HEX BYTES hhhh where you substitute four hexadecimal digits for hhhh When prompted for variable input with embedded decimal points replace the variable digits and let the decimal points remain to separate32 bit dotted decimal address s...

Страница 10: ...ation in this book and the New Rock website knowledge base your problem persists contact your product representative or a service representative at New Rock s Customer Support CS So we can serve you better make a list of the following items before calling A detailed description of your problem A complete listing of your system components and configuration including the serial number of your unit a...

Страница 11: ...ABOUT THIS BOOK MX100 TG User Manual 11 Fax 86 21 61202704 ...

Страница 12: ...etworks The MX100 TG provides an excellent solution for merging digital broadband access networks with the legacy telephone network in a seamless reliable manner Features This section presents high level information about the features of the MX100 TG platform It has been designed to serve smaller cost efficient deployment environments that require a rich feature set One to Four T1 E1 Span Capacity...

Страница 13: ...allation The MX100 TG is packaged in a 1U chassis and can be quickly and easily installed using standard tools It has been designed using industry standards and interoperates with major vendor s soft switches Simple Configuration The MX100 TG is configured and monitored via an intuitive built in web GUI The GUI provides password protected access from anywhere on the network Redundant and Hot Swapp...

Страница 14: ...r supply modules and two fans Interconnection is performed via a mid plane which is functionally equivalent to a backplane The following sections cover each component in more detail Chassis Dimensions The MX100 TG chassis is one rack unit 1RU high or 1 75 inches 4 4 cm high x 17 25 inches 43 82 cm wide x 17 00 inches 43 18 cm deep It can be mounted on an Electronics Industry Association EIA standa...

Страница 15: ...module includes a daughtercard that provides additional processing power Voice capacity is controlled via the processing power in the mainboard Figure 2 Control Module AUX Port The AUX auxillary port is not currently supported Port 1 Port 1 is used for local management access Port 2 Port 2 is not currently supported and will not be displayed in the GUI Port 3 Port 3 is an auto negotiating 10 100Ba...

Страница 16: ...e in the field RJ45 Pin 1 2 3 4 5 6 7 8 Description NC NC TxD GND GND RxD NC NC DB9 Pin 2 5 3 DB25 Pin 3 7 2 Indicators The mainboard indicators have the following meanings Table 1 MX100 TG Indicators Indicator Color Description PWR Power Green Power is on Off Power is off Status Green flashing Normal operation Red flashing System is in a diagnostic mode with limited functionality Red on System is...

Страница 17: ...supported number of T1 E1 lines should be connected Figure 3 T1 E1 Module Do not connect T1 E1 lines in excess of the system s capacity To determine the capacity of the MX100 TG see the product label Rear View Figure 4 shows the rear view of an MX100 TG chassis Figure 4 MX100 TG Gateway Rear View Power Supplies The MX100 TG contains two auto ranging power supplies They are capable of 100 240 VAC 4...

Страница 18: ...n use The alarm light indicates that the indicated power supply is not functioning properly Fans The MX100 TG chassis contains two fans that provide cooling for the system Both fans are required to be operational for the system to operate correctly in its specified ambient temperature ...

Страница 19: ...he gateway in the event of a power loss from one of the sources Airflow and Thermal Cooling Requirements The MX100 TG gateway is equipped with two fans for cooling the system modules The air intake is located on the right and left sides with the exhaust vents being located on the rear of the chassis To prevent overheating the air intake and exhaust must not be obstructed After installing the gatew...

Страница 20: ...tems y MX100 TG gateway chassis with modules installed y Power cable assemblies y MX100 TG gateway documentation and software on CD Standard configuration accessories can be added or removed based on customers demands To install the chassis 1 Remove the MX100 TG chassis from its shipping carton 2 The MX100 TG chassis is shipped with its rack mount ears positioned for front flush mounting To change...

Страница 21: ...equirements Applying Power 1 Connect the supplied power cords to the inlets on the power supplies 2 The MX100 TG does not have an on off switch Plug the MX100 TG power cord into an outlet Connect the other end of the power cord to the back of the MX100 TG The MX100 TG fans will start and the LED indicators will light 3 To ensure power is not accidentally removed make sure all plugs are securely co...

Страница 22: ...ve the following precautions Always ground the MX100 TG through the protective earth lead of the power cable Before applying AC power to the MX100 TG verify that the main plug is inserted into a socket outlet provided with a protective earth contact only The protective action must not be negated by using an extension cord power cable without a protective conductor grounding Interrupting the protec...

Страница 23: ...iagnostics and boot up sequence about 2 minutes 5 Establish a data connection to the MX100 TG When the MX100 TG is first shipped only Ethernet port 3 is configured Connect an Ethernet cable from your PC to Ethernet port 3 on the front panel of the MX100 TG 6 Open the Microsoft Internet Explorer web browser version 5 x or later and type the address http 192 168 2 240 7 Continue reading section Unde...

Страница 24: ...e MX100 TG has capacity for two spans of T1 E1 the Web GUI will only show two T1 E1 interfaces 1 and 2 in the appropriate configuration screens The following sections provide a brief tutorial on the MX100 TG s Web GUI Introduction After the MX100 TG powers up the GUI may be accessed by opening a standard web browser and entering the default address http 192 168 2 240 There are two user levels avai...

Страница 25: ...lege users the first to log in has control The remaining users regardless of their user privileges will only be able to view configurations and status For information on your current privilege level see Login User Info on page 60 New Rock highly recommends changing the passwords to prevent unauthorized access to the system The WebGUI will automatically logoff a user after 10 minutes of inactivity ...

Страница 26: ... THE MX100 TG This chapter describes the configuration and management of the MX100 TG gateway System Configuration By selecting system configuration from the main screen the system configuration screen is shown in Figure 5 Figure 5 System Settings Software Version ...

Страница 27: ...tings define a range of available RTP ports to be used for voice traffic The default settings are 10000 min and 10250 Since a VoIP call uses two RTP ports one for RTP and the other for RTCP one T1 E1 supports 23 30 simultaneous voice calls and up to four T1 E1 ports are supported the MX100 TG requires 184 240 RTP ports First Digit Timeout s The First Digit Timeout value defines how long after SETU...

Страница 28: ...ode is a transparent transmit mode Info mode is an information transmit mode and 2833 mode is a RTP event packet transmit mode Default Codec The MX100 TG can support multiple codec simultaneously Supported codec are shown in Table 2 Enter the value shown in Table 2 to configure the MX100 TG to use a particular codec for calls To configure the support of multiple codec enter them on one line separa...

Страница 29: ...cellation on page 43 SIP Configuration By selecting SIP from the navigation menu the SIP configuration screen will appear See Figure 6 Figure 6 SIP Settings SIP Port The SIP Port parameter is used to set the SIP local port The default value is 5060 The value can be any setting so long as it isn t used elsewhere Proxy Proxy allows a SIP Proxy to be designated for the MX100 TG The format of the Prox...

Страница 30: ...nd activate the DNS service in the Network Setting screen Registration Expires The Registration Expires parameter defines how often the MX100 TG re registers with the SIP server The default value is 3600 seconds SIP Domain Name SIP Domain Name defines the domain name If the SIP Domain Name is not configured the MX100 TG will use the address of the SIP Proxy The format of the SIP Registrar is the a...

Страница 31: ...ain screen the Network configuration screen is shown Host Name The Host Name parameter allows giving the MX100 TG a name For example it could be set to MX100 TG 3rdSt NYNY Valid domain name characters and symbols are allowed Local IP Address The Local IP Address parameter reports the address that is currently being used This value is useful to make sure management connectivity with the system is n...

Страница 32: ...e mask is aaa bbb ccc ddd The default setting is 255 255 255 0 MAC Address The MAC Address is the hard coded read only hardware address of the Ethernet port This value can be used for detailed debugging and troubleshooting DNS The DNS parameter configures the DNS functionality Enable or Disable When DNS is Enabled up to two DNS servers may be entered The first server is the primary and the second ...

Страница 33: ... Glace Bay Buenos Aires South Georgia Cape Verde London Amsterdam Cairo Moscow Muscat Karachi Almaty Bangkok Beijing Tokyo Canberra Magadan Auckland Newfoundland Tehran Kabul Calcutta and Adelaide Routing and Dialing Rule The following section details the Digit Map Route Table and IP Table capabilities of the MX100 TG Dialing rules As shown in Figure 8 the digit map may optionally be configured wi...

Страница 34: ...umber will be sent 2 8 xxxxxx A seven digit number starting with any number 2 8 will be sent Table 3 Digit Map Usage Setting Description 91x A three digit number starting with 91 which is used to finish an emergency call 911 Send the number 911 immediately after being received Routing Table The Routing Table shown in Figure 9 has two functions in the MX100 TG digit translation and routing Digit tr...

Страница 35: ...r IP When source is IP an address can optionally be specified e g xxx xxx xxx xxx or xxx xxx xxx xxx port Number The default number is called party number If the calling party number is being used add CPN in front of the number The Number can be y A specific number like 114 61202700 y A number prefix like 61 61x5 or 61 y A number range like 268 0 1 3 9 Handle The Handle parameter can be y KEEP dig...

Страница 36: ...cified To specify local IP the following entries are valid localhost 5060 or 127 0 0 1 5060 y ISDN ISDN span number can be specified Route and Map Examples The following examples are designed to show how route and digit mappings can be used effectively Examples Digit Maps IP 02161202700 KEEP 8 61202700 IP 021 REMOVE 3 Any number start with 021 the 021 prefix is removed IP CPN6120 ADD 021 CPN numbe...

Страница 37: ... After the END statement no digit manipulation will be applied on further matches Refer to the example below IP 12345 ADD 8001 add suffix 8001 IP 12345 REMOVE 4 then remove first 4 digits IP 12345 END stop digit manipulation no change on later matching condition IP 12345 REPLACE 777 won t take effect for 12345x IP 12 KEEP 3 won t take effect but any number start with 12 other than 12345 will take ...

Страница 38: ...222 34 55 1 CPNX REPLACE 2680000 Calls from 222 34 55 1 Calling party number is replaced with 2680000 IP 222 34 55 1 CPNX HIDE then calling party number presentation restriction is applied IP 222 34 55 1 CPNX ROUTE ISDN 2 then route to ISDN span 2 Example Relay Traffic to Another VoIP Platform In the following example traffic will be moved to another VoIP platform that has a common access number e...

Страница 39: ...the table are allowed to use the MX100 TG If the table is left empty then all addresses are allowed Figure 10 IP Screening Table ISDN Settings The MX100 TG always has four T1 E1 interfaces Capacity is determined by the processing power purchased and supplied by the control module A specific T1 E1 interface is selected by choosing ISDN Settings from the left menu pane on the main screen The specifi...

Страница 40: ... large company PBX expansion PBX1 MX100 TG1 IP MX100 TG1002 PBX2 0x0004 Enable second stage dialing When an ISDN call comes in the MX100 TG will cut through and play dial tone while collecting digits for further routing This is used in calling card or PSTN VoIP number bonding applications 0x0008 This setting is used in conjunction with second stage dialing 0x0004 and plays an announcement instead ...

Страница 41: ...wise type will be unknown 0x0200 Any CPN starting with 0 will be set to type NATIONAL Otherwise type will be unknown 0x0400 Any CPN starting with 00 will be set to type INTERNATIONAL Otherwise type will be unknown 0x0800 Restrict CPN presentation for the entire ISDN Group ID The Group ID parameter defines the group ID of the selected ISDN line It is not recommended to change the value T1 E1 interf...

Страница 42: ...cho Cancellation see Echo Cancellation Length on page 13 to Disable will turn off Echo Cancellation at the system level TDM Settings The MX100 TG always has four T1 E1 interfaces Capacity is determined by the processing power purchased and supplied by the main board A specific T1 E1 interface is selected by choosing TDM Settings from the left menu pane on the main screen Do not connect T1 E1 lines...

Страница 43: ...ed as Local use local clock or SPAN use recovered clock from the interface Note If one interface is configured to use SPAN clock all other interfaces will use the same recovered clock When more than one interface is configured to use SPAN clock TG will adopt the recovered clock from the first upped interface Cable Matching The Cable Matching setting configures the line build out LBO of the T1 E1 l...

Страница 44: ...rate This determines the signaling standard Signaling includes dialing tone ring back tone busy tone and ring tone There are three options China Chinese standard US American Standard and Hongkong Hong Kong Standard Forwarding Number Mode When call forwarding is used this parameter defines which number is indicated as the originating telephone number Calling Party Number designates that the calling...

Страница 45: ...the charging function of the accounting based on ISDN is used It can be set to Enable or Disable Start Message If Start Message is set to Enable the MX100 TG will transmit the RADIUS record of the call start and end If it is set to Disable the MX100 TG will not transmit the RADIUS record of the call start or end Unsuccessful Stop The Unsuccessful Stop parameter defines whether the MX100 TG transmi...

Страница 46: ...r 1 has a default of 50 and RTP Jitter Parameter 2 has a default of 3 Under normal situations New Rock recommends these settings not be modified 2833 Payload Type The 2833 Payload Type parameter sets the payload type used for transmitting 2833 packets The allowable range is 97 127 iLBC Codec Payload Type Enter a value from 97 to 127 This is the RTP load type when using the iLBC codec Default is 97...

Страница 47: ...et to yes the MX100 TG will not send speech packets of silence and instead begin CNG comfort noise generation to substitute for the unsent speech packets G 723 1 Rate The G 723 1 codec can be set to two encoding rates 5300 and 6300 bps IP TOS The IP TOS parameter is used to set the TOS value on packets This parameter is set using HEX settings The default value is 0x0c The following table represent...

Страница 48: ...T 38 data frames in each T 38 data packet T 38 Redundancy may be set from 1 6 The default setting is 4 Change Port When configured to Enable the MX100 TG will change the UDP port when switching to T 38 mode If T 38 Change Port is set to Disable the MX100 TG will reuse the RTP port number that was used in the creation of the connection T 38 ECM Mode The T 38 ECM Mode may be set to Enable or Disable...

Страница 49: ...Using Proxy Port This parameter is used to set whether the MX100 TG uses the proxy port as the reply port If Use Proxy Port as Reply Port is set to Enable this feature is enabled The default setting is Disable and the MX100 TG will use the default port 5060 Always Send 180 If this parameter is set to Enable the MX100 TG will map all alerting messages ALERTING with and without in band indicator to ...

Страница 50: ...e CODEC based on its local preference order CPN From Request Line When this flag is set to Enable the MX100 TG will obtain CPN Called Party Number from SIP Request Line By default this flag is set to Disable and TG gets CPN from SIP To field Do Not Validate Via This parameter defines if the via field in the SIP response is neglected Enable or not Disable Registration Keep Domain When this paramete...

Страница 51: ...f set to Disable the MX100 TG will use the proxy information SIP CallID Using Hostname This parameter controls whether the proxy information or hostname set in SIP Setting section will be used by SIP Call ID If set to Enable and the MX100 TG will use the hostname information If set to Disable the MX100 TG will use the proxy information Border Proxy2 Signal Encrypt RTP Encrypt T38 Encrypt Set wheth...

Страница 52: ...on algorithm TCP Not Encrypted Encrypt signaling and RTP over TCP but no encryption algorithm is used UDP Not Encrypted Encrypt signaling and RTP over UDP but no encryption algorithm is used UDP Encrypted UDP encryption Also use encryption algorithm Using Keyword UDP encryption using backward keyword encryption algorithm Using Keyword2 UDP encryption using forward keyword encryption algorithm RC43...

Страница 53: ...S Config After log in click EMS Config from the left pane The following displays Primary EMS Server Enter primary EMS Server IP address if you want to use EMS service Secondary EMS Server Enter secondary EMS server IP address EMS Log Level This field value is automatically detected You do not need to change this field EMS Retries This field value is automatically detected You do not need to change...

Страница 54: ... the MX100 TG MX100 TG User Manual 54 This field value is automatically detected You do not need to change this field Report Interval This field value is automatically detected You do not need to change this field ...

Страница 55: ...ing information is available on the Web GUI by selecting Logs from the left navigation pane Resource The Resource Info screen is shown in Figure 17 This screen shows the IP address and level of all Web GUI users SIP register information and relevant information for telephone and RTP Figure 17 Resource Information Screen Login User Info ...

Страница 56: ...ins the fields in the following order 1 internal call context index 2 internal call ID for the call 3 internal RTP context index for the call 4 call originating side call terminating side 5 remote SIP IAD s IP address and port 6 local RTP port for the call 7 selected CODEC for the call 8 ISDN circuit selected for the call slot number span number circuit number 9 ISDN call state 10 CPN CDPN for the...

Страница 57: ...ate There are three possible values for state Table 4 ISDN States State Definition Description IS In Service In service currently used OOS Out of Service Not currently used MOOS Manual Out of Service Continuously not invoked and backup signaling channel is not invoked can t be used Int ID This field reflects the current setting of the Group ID parameter Side ...

Страница 58: ...ocation of the T1 E1 Interface card and is always 1 ds1 is the T1 E1 port number on the T1 E1 Interface card ds0 denotes the channel which is configured as the D Channel Equipped MAP This field shows the available states of the 30 time slots in the E1 card except the 0 and 16th slot which are reserved See ISDN Circuit configurable for more information 0xfffeffe is expressed in the binary system If...

Страница 59: ...he Timing Source parameter Payload This field reflects the current setting of the DS0 Type parameter ISDN Call The ISDN Call Information screen is shown in Figure 19 The following sections provide additional details on the ISDN Call Information screen Figure 19 ISDN Call Information Screen Group ID This field reflects the current setting of the ISDN Group setting TS Time Slot ...

Страница 60: ...s of the RTP Media Server or access gateway which comes before the RTP port number Local The local parameter shows the locally used RTP port number Codec The codec value reports the currently used codec Ref Call Reference This parameter is the call reference which is used to recognize the information involved with call or equipment book cancel requests on local user and network interfaces The call...

Страница 61: ...he confirmation information of call set up request which denotes that the user is allowed to send call information to the network with overlap mode This state exists when a number is being called out at the same time the network has confirmed the call setup request and prepare to receive call information with overlap mode U3 N3 Out Pro cess OUT PROC This state exists when a number is being called ...

Страница 62: ... forth reminder signal U6 N6 Call Present This state exists when a number is being called in at the same time the network has received the call set up request but no response to it This state exists when a number is being called in at the same time the network has sent forth the call setup request but no satisfied response received U7 N7 Call Received This state exists when a number is being calle...

Страница 63: ...e indication from the remote user s response to the call When a number is being called in this state denotes that the network has given the call to the called user When a number is being called out this state denotes that the network has sent forth the user an indication from the remote user s response to the call U11 N11 Disconnec t Request This state denotes that the user has sent forth a reques...

Страница 64: ...d the pause request but no response is received U17 N17 Resume Request This state denotes that the user has requested the network to resume the suspended call and is waiting for response This state denotes that the network has received the request to resume the suspended call but no response is received U19 N19 Release Request This state denotes that the user has requested the network to release t...

Страница 65: ...ap mode if any This state exists when a number is being called in at the same time the user has received the confirmation information of call set up request which denotes that the network is allowed to send forth call information to the user with overlap mode CPN This is the calling party number CDPN This is the called party number Timestamp The timestamp value reports the setup time which is alwa...

Страница 66: ...ISDN signaling If you need longer history of the messages the complete message log can be viewed at var tmp message log The size of the log file is 500KB You may see three message log files in var tmp message log message log 1 and message log 2 with total 1500KB size limitation message log always contains most recent messages When message log is full message log 1 will be copied to message log 2 m...

Страница 67: ...Monitoring MX100 TG User Manual 67 Figure 21 Startup Information Log ...

Страница 68: ...om the left navigation pane Factory Config As shown in Figure 22 the Factory Config selection will ask for confirmation to restore the system to its factory defaults Restoring factory settings to a remote MX100 TG will cause the IP Address used to access the system to revert to its default This will likely cause remote access to be lost Figure 22 Factory Settings ...

Страница 69: ...w software After selecting Upgrade do not perform any operations on the MX100 TG Allow the software update process to proceed in the background The following sections provide additional details on the Upgrade screen Figure 23 Upgrade Screen FTP Server The FTP Server input box identifies the IP address aaa bbb ccc ddd or domain name example ftp New Rock com of the ftp server Example http 220 248 10...

Страница 70: ... in ftp server Filename Input the software version to be downloaded If left blank the software will be updated to the latest version Change Password The Change Password screen is shown in Figure 24 Only the administrator account has the permissions to change passwords The current operator password is displayed in plain text and can be changed independently of the administrator password Figure 24 C...

Страница 71: ...System Tool MX100 TG User Manual 71 Figure 25 Gateway Restart Screen ...

Страница 72: ...at you have checked the following y Console Port configuration Verify that the baud rate of your terminal is set to 9600 bps y Power reset When cycling power be sure to leave the power off for a minimum of 30 seconds before reapplying power to the unit y Command review Review the MX100 TG gateway commands in the Configuration chapter y Software version To ensure that you have the latest enhancemen...

Страница 73: ...A complete listing of your system components and configuration including the serial number of your unit and the software version number it is running y A narrative of the actions you performed prior to the problem y A list of all system messages posted by your unit Contacts New Rock Technologies Inc Corporate Headquarters U S A Address 10 Merrymount Road Quincy MA 02169 USA Office Phone 1 781 354 ...

Страница 74: ... latest information including prices on the parts described in this appendix consult your New Rock representative MX100 TG Cables Cable Description T1 E1 120 Ohm Balance Cable RJ48 P to RJ48 P T1 E1 75 ohm BNC Cable 75 120 ohm Impedance Converter Spares Description Chassis includes 2 P S T1 E1 module P S module T1 E1 module 4 ports CM module 1 span capacity CM module 1 span capacity CM module 2 sp...

Страница 75: ...New Rock Technologies Inc 75 ...

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