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AT commands

CTA 500

dm On Line Guide

P0873832 Issue 05

Serial Interface

This section describes the commands associated with the serial
interface. All values are saved as part of the CTA 500

proÞle.

Serial Interface commands summary

Serial Interface Rate

The Serial Interface Rate Command

&P2=value

sets the rate of the interface between the CTA 500

and the

attached computer. The permitted values are 0, 1,200, 2,400, 4,800,
9600, 19,200, 38,400, 57,600 and 115,200 (default) for
asynchronous operation. CTA 500

uses autobauding when the

Value is 0, while the remaining values refer to the rate of
transmission.

Command

Description

Value

&P2=n

serial interface rate

0 autobauding
1,200
2,400
4,800
9,600
19,200
38,400
57,600
115,200 (default)

&P3=n

serial interface parity

0 none (default)
1 odd
2 even

&P4=n

serial interface data

bits per character

7-8 (8 is default)

&P6=n

serial interface stop

bits per character

0 one stop bit (default)
1 one and one-half stop bits
2 two stop bits

Содержание CTA 500dm

Страница 1: ...orts Computer Telephony Integration CTI services required for today s ofÞce environment With the CTA 500dm you can access remote computers on networks including the Internet You can also telecommute over a digital telephone network and access the CTA 500dm in your ofÞce The CTA 500dm allows you to access high speed network features in your ofÞce from your home telephone The CTA 500dm in the Digita...

Страница 2: ... intelligent bandwidth management software in the ICS to provide dynamic bandwidth allocation accessible at your desktop Norstar station interfaces support two channels that are ßexibly allocated to transmit data voice or both When the attached Norstar telephone is not in use all bandwidth is allocated for data trafÞc up to 128 kbit s However if you want to use the phone to answer an incoming call...

Страница 3: ...es on the Norstar ICS to access Internet service providers ISPs You can connect an ISP through the public switched digital network PSDN using regular dial up methods Dial Up Networking You can use the CTA 500dm for remote LAN access applications when PPP is used to connect to a remote LAN Data to data transfers The CTA 500dm can be used to establish a connection with an ISDN Terminal Adapter PPP o...

Страница 4: ...oftware upgrade for feature enhancement ICS call management feature support for example dialing restrictions station message detail recording ICS default conÞguration for simpliÞed installation About this document The First time setup section has initial installation information The Installation and setup section has information on installing the CTA 500dm and conÞguring your PC and ICS The ConÞgu...

Страница 5: ...he steps listed below to complete the installation 1 Make the physical connections to the CTA 500dm See Installation and setup 2 ConÞgure the ICS for the CTA 500dm See Setting up the ICS 3 ConÞgure the Com port on the PC for the CTA 500dm See ConÞguring the PC serial port 4 Install the CTA500dm and if required the Norstar TAPI Service Provider software See Installing CTA 500dm and Norstar TAPI Ser...

Страница 6: ...6 First time setup CTA 500dm On Line Guide P0873832 Issue 05 ...

Страница 7: ...included with the Norstar set connect the ICS wall plug to the Line jack use the included 6 way modular socket Depending on the ICS software release restrictions may apply on the maximum number of ports and the physical ports to which the CTA 500dm can be connected Refer to the wiring information in ICS Installation Guide for more information connect the DB 25 connector to the serial port on the P...

Страница 8: ...TA 500dm bottom view 4 Mount the CTA 500dm onto the screws making sure to orient the connector ports so they are at the top of the CTA 500dm 5 Route the cables away from the CTA 500dm to avoid potential electromagnetic interference CAUTION Shock hazard For protection from shock hazards the CTA 500dm must receive power from an Approved Class 2 power pack equipped with a straight plug center positiv...

Страница 9: ...igned to the CTA 500dm based on the physical set port that connects the CTA 500dm to the ICS You can change the DN that is assigned to the CTA 500dm in the same way that you change a DN for a Norstar telephone Refer to ICS Installation Guide for more information Note If you use automatic telephone relocation set relocation to change the port used by a CTA 500dm you must power down the CTA 500dm be...

Страница 10: ... system requires a different set up Note Installation using another vendorÕs protocol stack packages will differ See the AT commands section of this document for information on conÞguring advanced operations on the CTA 500dm from your PC See the Appendix for a list of the DB 25 pins used by the CTA 500dm ...

Страница 11: ... perform with the CTA 500dm include the following ConÞguring the PC serial port Installing CTA 500dm and Norstar TAPI Service Provider software Note Before you begin conÞguration connect the ICS and the PC as described in the ÒInstallation and setupÓ section and power up the CTA 500dm ...

Страница 12: ...Norstar Personal Productivity Suite main screen select the Language and then the Installation option 2 After accepting the licensing terms and reading the TAPI requirements if displayed select the Install option 3 Select the CTA500dm from the right hand side of the dialog box under the Drivers section 4 On the left hand side of the dialog box select the components you wish to install Drivers Ñ the...

Страница 13: ...K 9 Click Yes to automatically setup Internet access through your CTA 500dm 10 Click Next when you see the message indicating that all network components required are present 11 Click Yes to automatically setup a connection to your Internet service provider 12 Select Norstar CTA 500dm 13 Click Next 14 Select one of the Internet service providers from the list or click None of the above 15 When the...

Страница 14: ...stallation is complete and you need to restart your computer before using the CTA 500dm 20 Click the Finish button Configuring the CTA 500dm if not configured during installation 1 From the Windows Start button navigate to Programs Norstar CTA 500dm CTA 500dm ConÞguration 2 The CTA 500dm ConÞguration Options dialog box is displayed 3 Choose the appropriate settings for your installation ...

Страница 15: ... desktop 2 Double click Dial Up Networking icon 3 Double click Make New Connection icon 4 When the Make New Connection window displays choose Norstar CTA 500dm modem from the pull down menu 5 Click the ConÞgure button 6 Click the Connection tab 7 Click the Advanced button 8 In the Advanced Connection Settings window type AT D1 in the Extra settings box ...

Страница 16: ...2 Choose Programs from the menu 3 Choose CTA 500dm from the sub menu 4 Choose CTA 500dm conÞgurations 5 Select the ConÞguration tab 6 Choose settings for the required conÞguration 7 Click OK You now have another CTA 500dm conÞguration with different settings than the Þrst one Make sure that you note the speciÞc settings when you create the connection icons ...

Страница 17: ...tware 1 Click the Browse button 2 When Þle information displays click Transmit 3 Advanced connection settings can be deÞned using the setup wizard or the Enter Download State command Uninstalling the CTA 500dm 1 Open the Control Panel 2 Open Modems 3 Select the CTA 500dm conÞguration that you want to uninstall 4 Click Remove Note You must select another modem for any remaining Dial Up Networking c...

Страница 18: ...18 Configuration CTA 500dm On Line Guide P0873832 Issue 05 ...

Страница 19: ...data call and want to make a voice call at the same time lift the telephone handset in order to make a channel available for the call Configure TAPI dialing properties If you use an access code to get an external line or get a private network line to make a long distance call for example dial 9 before dialing an external number or dial 6 before dialing a long distance number you need to conÞgure t...

Страница 20: ...e network 6 Click OK 7 Close all windows Installing Personal Call Manager The Personal Call Manager PCM application is supplied on the Norstar Personal Productivity Suite PPS CD ROM 1 From the PPS main screen select the Language and then the Installation option 2 After accepting the licensing terms and reading the TAPI requirements if displayed select the Install option 3 On the left hand side of ...

Страница 21: ...e a TAPI line window 1 Double click on the PCM icon on the desktop The PCM program loads and the Choose A TAPI line window displays on top of the program 2 Use the pull down menu to select the line for TAPI connection 3 In the Address box choose Default for a typical user conÞguration or pull down the menu and select your line number to use a speciÞc line for all calls 4 Click OK 5 After restartin...

Страница 22: ...22 Installing Norstar TAPI SP CTA 500dm On Line Guide P0873832 Issue 05 Note Refer to the Nortel ITAS web page for tips and information on other conÞgurations ...

Страница 23: ...C when both PCs are equipped with a CTA 500dm and Win95 Plus Dial Up Server software Note Dial Up Server software is available from either the Microsoft Plus Pack or ISDN Accelerator Pack To share resources complete the following sections Installing Dial Up Server Allowing access to your PC Connecting to a Windows 95 Dial Up Server Connecting to Resources on the Dial Up Server ...

Страница 24: ...menu select Dial Up Server 5 Select Allow caller access 6 Select Change Password to apply a password to the connection A password is recommended but is not mandatory when using Dial Up Server 7 Information that is entered in the Comment Þeld is displayed to other PCs that attempt to dial in to your PC 8 Click Apply The Status changes to Monitoring When another PC dials in the Status changes to Ans...

Страница 25: ...s 10 Enter a Share Name any applicable Comment and a Password The Share Name and Password are required by PCs attempting to access your PC 11 Close all open windows Connecting to a Windows 95 Dial Up Server 1 Double click the My Computer icon on the desktop 2 Open Dial Up Networking 3 Select the CTA 500dm modem 4 Use the File pull down menu to choose Properties 5 Click the Server Type button 6 Add...

Страница 26: ...me and password are not yet required Connecting to Resources on the Dial Up Server Method one 1 Right click on Network Neighborhood 2 Select Find Computer 3 Enter the name of the computer that you want to browse 4 Click on the Find Now button Method two 1 Click on the Start button 2 Move the cursor to Programs 3 Select Windows Explorer from the sub menu 4 From the Tools menu select Map Network Dri...

Страница 27: ... On Line Guide resource on the Dial Up Server under whichever Drive letter you select 6 Enter the Resource you want to connect to in the Path Þeld The syntax is Computer Name Share Name Note Windows Explorer displays the new drive letter 7 Click OK ...

Страница 28: ...28 Resource sharing CTA 500dm On Line Guide P0873832 Issue 05 ...

Страница 29: ...s commands Calling Line ID commands Caller ID Security commands To use anAT command establish a HyperTerminal connection from the PC to the CTA 500dm Type the letters AT followed by the desiredAT command For instance the AT V0 command queries all stored CTA 500dm parameters You can string several AT commands into a single entry for example AT V0 S26 I4 The individualAT commands within the string d...

Страница 30: ...user and is stored in non volatile memory The active proÞle which is dynamic while the CTA 500dm is in operation It records changes made using AT commands When the CTA 500dm is powered down the active proÞle is lost unless it is saved as the user proÞle On power up the active proÞle is loaded from one of the saved proÞles The factory proÞle is proÞle 0 and the user proÞle is proÞle 1 Profile comma...

Страница 31: ...Þed the default proÞle is used Result Codes OK Appears when the command is executed ERROR Appears when the command could not be executed Load Stored Profile on Start up The Load Stored ProÞle on Start up Command Y value instructs the CTA 500dm to load all values that are stored in a proÞle after a power up or after a DTR reset if D is set to 3 seeÒSerial Interface Control LinesÓ on page 56 for the...

Страница 32: ...h the connected ICS it is either in the Commands State or in the Download State On line Command State A valid connection exists between the CTA 500dm and another device through the network interface However the CTA 500dm can still process and respond to most AT commands When the selected rate adaptation protocol has no ßow control and the CTA 500dm is in the On line Command State data may be lost ...

Страница 33: ... the attached computer while writing the programming information into its Flash EEPROM You can enter the Download State on power up if no valid application software is found or through the Y command ÒEnter Download StateÓ on page 34 You can also enter the Download State when the CTA 500dm cannot establish communication with the connected ICS When the CTA 500dm is in the Download State any set usin...

Страница 34: ...th channels on the TCM link are in use NO CARRIER Appears when the connection could not be reestablished Enter Download State The Enter Download State Command Y password instructs the CTA 500dm to enter the download state and prepare for the transfer of a Þle that updates the Flash EPROM Sets the baud rate at 9600 bit s The password is always Nor After the Þle transfer has begun disconnecting the ...

Страница 35: ...rtion of the three escape characters is called the guard time This value is set in S register 12 and has a default of 1 second The escape character is set in S register 2 and has a default of 43 the ASCII character Result Code OK Appears when the CTA 500dm has entered the On line Command State General General commands summary Command Description Value In request identification 0 product ID default...

Страница 36: ...saved dial string locations 0 9 default 0 Vn verbose control 0 numeric indications 1 full indications default Qn result code control 0 result codes are sent default 1 result codes are suppressed Xn call monitoring result code selection 0 connect only 1 connect rate only 2 connect rate only 3 connect rate and busy 4 connect rate and busy default Command Description Value ...

Страница 37: ...e the possible values in the following table If no value is speciÞed the default value of 0 is used Result Codes OK Appears following display of the requested information when the command is successful ERROR Appears when the chosen value is invalid Value Returned strings 0 product ID CTA 500dm 1 boot software version number 2 download software version number 3 unique CTA 500dm identity string 4 ca...

Страница 38: ...ng a maximum width of 72 columns Result Codes OK Appears following display of the requested parameters ERROR Appears when the chosen value was invalid Set Local Echo The Set Local Echo Command E value instructs the CTA 500dm to turn the local AT command echo on or off A value of 0 turns the echo off and a value of 1 turns the echo on No value defaults to a value of 1 Result Codes OK Appears when t...

Страница 39: ...s Result Codes OK Appears when the command was successfully completed ERROR Appears when the command could not be completed Display Saved Dial String The display Saved Dial String Command Z value returns the string stored in the speciÞed location The OK indication is returned on a new line following the successful completion of the command If no location is speciÞed a blank line is followed by the...

Страница 40: ...Codes OK Appears when the value is supported ERROR Appears when the selected value is unrecognized or is not supported Result Code Suppression Control The Result Code Suppression Control Command Q value controls the transmission of result codes by the CTA 500dm Possible values are shown below Result Codes OK Appears when the value is 0 ERROR Appears when the value is unrecognized and the previous ...

Страница 41: ...low you to control CTA 500dm operation The registers are usually both read and write accessible The registers used vary with the application supported by the CTA 500dm All S registers are saved as part of a CTA 500dm proÞle S registers can appear as a group by using the V command see ÒGeneralÓ on page 35 for more information S register commands summary Value Result Code Operation 0 connect result ...

Страница 42: ... to have a default setting and an initial factory value Result Codes OK Appears when the command is successfully completed ERROR Appears when the chosen register or the value for the register is invalid Query S Register The Query S Register Command Sregister number instructs the CTA 500dm to return the value of the selected S register Result Codes OK Appears on a new line following display of the ...

Страница 43: ...nly 0 255 default 0 S2 escape character 0 127 default 43 128 255 disables escape sequence S3 carriage return character 0 127 default 13 S4 line feed character 0 127 default 10 S5 back space character 0 127 default 8 S7 wait for connection 1 255 in seconds default 30 S10 DCD drop time 1 255 in tenths of a second default 14 S12 guard time 0 255 in fiftieths of a second default 50 S25 DTR detect time...

Страница 44: ...sed if no characters follow the D command an error is returned when there is no stored dial string Command Description Value Dx originate a call valid dial string or strings A answer a call H disconnect from current call Character Use 0 9 dialed digits p or P ignored or may be used to force dial a speech bearer service call t or T ignored or may be used to force dial a 3 1 kHz audio bearer service...

Страница 45: ...orted by the assertion of DTR and if D is either 1 2 or 3 see theÒSerial Interface Control LinesÓ on page 56 for the commands CONNECT rate When the call is successfully completed the connect indication displays along with the rate of the connection to the network not the rate of the connection between the CTA 500dm and the attached computer as either 56 000 or 64 000 bit s Immediately after this i...

Страница 46: ...rs on the command line are ignored The Answer Command can be aborted by the reception of a single character if the character is received before the command is complete Result Codes CONNECT rate When the call is answered the connect indication displays along with the rate of the connection to the network not the rate of the connection between the CTA 500dm and the attached computer either 56 000 or...

Страница 47: ...be set to either 56 kbit s or 64 kbit s See ÒBearer CapabilitiesÓ on page 81 for more information Outgoing Call Control commands summary Outgoing Call Bearer Service Control The Outgoing Call Bearer Service Control Command A98 value controls the type of bearer service used by the CTA 500dm for making outgoing calls Not all bearer services are available to all users however all bearer services are ...

Страница 48: ...he selected rate applies to both channels on the TCM link The following table shows the values for data rate selection Result Codes OK Appears when the selected value is supported ERROR Appears when the selected value is unrecognized or is not supported Incoming Call Control Data calls can be answered over any of the ISDN bearer services The data rate can be either 56 kbit s or 64 kbit s However t...

Страница 49: ...M port of the CTA 500dm The selected rate applies to both channels on the TCM link The following table shows the values for data rate selection Result Codes OK Appears when the selected value is supported ERROR Appears when the selected value is unrecognized or is not supported Command Description Value A93 n set speech bearer call answer 0 disabled default 1 enabled A94 n set 3 1 kHz audio bearer...

Страница 50: ...lected value is not recognized or is not supported Audio Bearer Call Answer Control The Audio Bearer Call Answer Control Command A94 value allows the CTA 500dm to accept or reject incoming calls received over the 3 1 kHz audio bearer service The following table shows the values for 3 1 kHz audio bearer service calls control Result Codes OK Appears when the selected value is understood ERROR Appear...

Страница 51: ...ected value is not recognized or is not supported Ringing Indications When the CTA 500dm detects an incoming call that it is allowed to accept the RI pin is asserted see ÒSerial Interface Control LinesÓ on page 56 for more information and a text string is provided to the serial interface The text string is repeated every 6 seconds until the call is answered manually or automatically disconnected b...

Страница 52: ...otocol Selection The Rate Adaptation Protocol Selection Command A2 value instructs the CTA 500dm to use the speciÞed protocol for data transmission using the TCM port of the CTA 500dm Result Codes OK Appears when the selected protocol is supported ERROR Appears when the selected value is not recognized or is not supported Command Description Value A2 n select rate adaptation protocol 95 PPP async ...

Страница 53: ...link may be used A value of 2 indicates that two links may be used The default value is 2 Result Codes OK Appears when the value is supported ERROR Appears when the selected value is not recognized or is not supported CTI MUX Mode The CTI MUX mode command ATCTI activates theACCESS multiplexer functionality on the CTA500dm Automatically issued when ACCESS TAPI is being installed on the PC using the...

Страница 54: ...permitted values are 0 1 200 2 400 4 800 9600 19 200 38 400 57 600 and 115 200 default for asynchronous operation CTA 500dm uses autobauding when the Value is 0 while the remaining values refer to the rate of transmission Command Description Value P2 n serial interface rate 0 autobauding 1 200 2 400 4 800 9 600 19 200 38 400 57 600 115 200 default P3 n serial interface parity 0 none default 1 odd ...

Страница 55: ...hows the supported values Result Codes OK Appears when the value is supported ERROR Appears when the selected value is not recognized or is not supported Set Data Bits Set Data Bits P4 value The Set Data Bits Command sets the number of data bits on the interface between the CTA 500dm and the attached computer The values 7 and 8 are permitted The default value is 8 data bits Result Codes OK Appears...

Страница 56: ...tached computer The following table shows the supported values Result Codes OK Appears when the value is supported ERROR Appears when the selected value is not recognized or is not supported Serial Interface Control Lines Change the operation of the control lines on the serial interface by using AT commands Value Use 0 one stop bit default 1 one and one half stop bits 2 two stop bits ...

Страница 57: ...OFF 2 not supported 3 bidirectional RTS CTS default 4 not supported Cn DCD operation 0 always on 1 tracks connection default 2 always on except temporarily after disconnect Dn DTR operation 0 ignored default 1 enter command state 2 hang up and disable auto while DTR is down 3 hang up and reset port Rn CTS operation 0 CTS follows RTS 1 CTS is always on when on line default Sn DSR operation 0 DSR is...

Страница 58: ...Issue 05 Note XON XOFF ßow control uses characters often referred to as control Q and control S Result Codes OK Appears when the value is supported ERROR Appears when the selected value is not recognized or is not supported 4 not supported Value Use ...

Страница 59: ... a connection has been broken DCD is turned off for the time selected in S register S10 All modes of operation may not apply with all selections of rate adaptation protocols Result Codes OK Appears when the value is supported ERROR Appears when the selected value is not recognized or is not supported DTR Operation The DTR Operation Command Dvalue sets the operation of the DTR pin The following tab...

Страница 60: ... and Play identiÞcation string Result Codes OK Appears when the value is supported ERROR Appears when the selected value is not recognized or is not supported CTS Operation The CTS Operation Command Rvalue sets the operation of the CTS pin The following table shows the allowable values These values are overridden by the ßow control selection if hardware ßow control RTS CTS is selected Result Codes...

Страница 61: ...he CTA 500dm is allowed to accept Normal public network cadencing is provided The RI signal is asserted for 2 seconds then negated for 4 seconds This cycle continues until the call is answered disconnected by the caller or the CTA 500dm resets for example assertion of DTR if D is 2 or 3 Calling Line ID If Calling Line IdentiÞcation is available on an incoming call and is enabled a single indicatio...

Страница 62: ... Control The Calling Line ID Delivery Control Command N1 value controls whether calling line ID is delivered on incoming calls Value 0 the default disables calling line ID delivery Value 1 enables calling line ID delivery using the concatenated format Value 2 enables calling line ID delivery using the tag and value format Result Codes OK Appears when the value is understood and calling line ID is ...

Страница 63: ... incoming call Note The absence of calling line ID information is not an error condition Caller ID Security Caller ID security provides either call screening or call blocking based on a list of numbers entered by the user Call screening accepts calls from numbers that are on the list while call blocking accepts calls from numbers that are not on the list If Caller ID security is disabled all calls...

Страница 64: ...ood and calling line ID is supported ERROR Appears when the selected value is not recognized or is not supported Add Number The Add Number Command A number Command Description Value Sn select CLID security mode 0 disabled default 1 enable CLID screening mode 2 enable CLID blocking mode A n add specified number to CLID security list D n remove specified number from CLID security list C clear all st...

Страница 65: ...gits Delete Number The Delete Number Command D number allows removal of a number from the Caller ID security list Result Codes OK Appears when the number is successfully removed from the list ERROR Appears when the speciÞed number is not on the list Clear List The Clear List Command C allows removal of all numbers from the Caller ID security list Result Code OK Appears when the list is cleared Vie...

Страница 66: ... Yxxxx enter Download State XXXX Nor In request identification 0 product ID default 1 boot software revision 2 download software version 3 unique identifier 4 capability string 6 CTI MUX mode query 9 PnP identification string Vn view stored parameters 0 all profiles default 1 stored dial strings 4 stored Caller ID Security list En set echo command 0 turn echo off 1 turn echo on default Zn save dia...

Страница 67: ...55 disables escape sequence S3 carriage return character 0 127 default 13 S4 line feed character 0 127 default 10 S5 back space character 0 127 default 8 S7 wait for connection 1 255 in seconds default 30 S10 DCD drop time 1 255 in tenths of a second default 14 S12 guard time 0 255 in fiftieths of a second default 50 S25 DTR detect time 0 255 in hundredths of a second default 5 S26 RTS to CTS time...

Страница 68: ...nabled A95 n set data bearer call answer 0 disabled default 1 enabled A5 n select speed of TCM channels incoming voice bearer service calls 0 64 kbit s 1 56 kbit s default A2 n select rate adaptation protocol 95 PPP async to sync conversion 96 MP B0 n set number of links in MP bundle 1 single channel used 2 both channels used default P2 n serial interface rate 0 autobauding 1 200 2 400 4 800 9 600...

Страница 69: ...lways on except temporarily after disconnect Dn DTR operation 0 ignored default 1 enter command state 2 hang up and disable auto while DTR is down 3 hang up and reset port Rn CTS operation 0 CTS follows RTS 1 CTS is always on when on line default Sn DSR operation 0 DSR is always on default N1 n calling line ID delivery control 0 disabled default 1 enable concatenation format 2 enable tag and value...

Страница 70: ...TA 500dm On Line Guide P0873832 Issue 05 A n add specified number to CLID security list D n remove specified number from CLID security list C clear all stored numbers V4 display stored numbers Command Description Value ...

Страница 71: ... is on See ÒCTA 500dm LEDÓ on page 82 for more information Perform a device restart LED problem The LED is flashing quickly on power up The CTA 500dm has lost its software and is waiting for a Þle transfer of new software See ÒConÞgurationÓ on page 11 for instructions on reloading the CTA 500dm software The software Þle is on the CTA 500dm installation disk The LED is flashing slowly and the Dial ...

Страница 72: ...tion section of this document Check that the CTA 500dm serial port is set to the correct baud rate 115200 is required for all cases except during a software upgrade using ÒSerial Interface RateÓ on page 54 Echoed AT commands from the CTA 500dm do not appear correctly on your PC but the response messages appear correctly Check the echo option on your PC Disable echo if your PC displays duplicate ch...

Страница 73: ... See ÒRate adaptation protocol speciÞcationsÓ on page 80 for more information Make sure that the proper authentication protocols are used at both ends and that your ID and password are correct If the data rate is set to 64 kbit s the network may not be able to support 64 kbit s Try connecting at 56 kbit s See ÒOutgoing Call Control commands summaryÓ on page 47 to change your data rate The CTA 500d...

Страница 74: ...that the CTA 500dm and PC ßow control methods match SeeÒFlow ControlÓ on page 57 for more information The CTA 500dm hangs up during a data call Check the setting of the DTR pin See ÒDTR OperationÓ on page 59 for more information Data calls are established but Internal applications time out Check that the settings under TCP IP properties match those of your ISP Data calls are made using MP and the ...

Страница 75: ...tions 3 Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface 4 Use caution when installing or modifying telephone lines The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the product Thi...

Страница 76: ...ns marked on the product 3 Unplug this product from the wall outlet before cleaning Do not use liquid cleaners or aerosol cleaners Use a damp cloth for cleaning 4 Do not use this product near water for example near a bathtub wash bowl kitchen sink or laundry tub in a wet basement or near a swimming pool 5 Do not place this product on an unstable cart stand or table The product may fall causing ser...

Страница 77: ...roduct c If the product housing has been damaged d If the product exhibits a distinct change in performance 12 Avoid using telephone equipment during an electrical storm There may be a remote risk of electric shock from lightning 13 Do not use the telephone equipment to report a gas leak in the vicinity of the leak 14 CAUTION To eliminate the possibility of accidental damage to cords plugs jacks a...

Страница 78: ...llowing two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation These limits are designed to provide reasonable protection against harmful interference in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used...

Страница 79: ...lowing measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Changes or modiÞcations not expressly approved by the party responsible for compliance could void the userÕs au...

Страница 80: ...ls when set to PPP operation Note PPP used by the CTA 500dm is asynchronous to synchronous conversion Multilink PPP MP is a protocol that is used to link multiple channels that use PPP When used with the CTA 500dm MP allows your computer to connect to the network using 1 or 2 channels However the link between the CTA 500dm and your computer uses only a single channel Because of this the CTA 500dm ...

Страница 81: ... and digital networks allows a user to select a number of different bearer capabilities and data rates Using a bearer capability gives the network information about how it should treat the call In general data cannot be sent over one of the voice bearer capabilities 3 1 kHz audio and speech However in some cases especially on local calls it may be possible to support 56 kbit s and even 64 kbit s d...

Страница 82: ...terns and CTA 500dm states LED Pattern CTA 500dm State B channel State continuous on Idle both idle single blink on Active one channel active double blink on Active both channels active single blink off off line error or powering up not available fast blink waiting for file download refer to Installing CTA 500dm and Norstar TAPI Service Provider software on page 12 not available slow blink out of ...

Страница 83: ... OK 1 RING 2 number RING number 3 NO CARRIER 4 ERROR 6 NO DIALTONE not used 7 BUSY 56 CONNECT 56000 64 CONNECT 64000 112 CONNECT 112000 120 CONNECT 120000 if supported 128 CONNECT 128000 1000 SEND PROGRAM FILE USING YMODEM G Protocol Bearer service Rate kbit s Initialization string PPP data 64 q3 d2 a2 95 a98 0 a4 0 PPP data 56 q3 d2 a2 95 a98 0 a4 1 PPP audio 56 q3 d2 a2 95 a98 1 a4 1 MP 1 channe...

Страница 84: ... 3 Received Data RD 4 Request to Send Ready for Receiving RTS 5 Clear to Send CTS 6 DCE Ready DSR 7 Signal Common GND 8 Received Line Signal Detector DCD 12 Secondary Received Line Signal Detector Data Signal Rate Selector DCE Source 13 Secondary Clear to Send 14 Secondary Transmitted Data 16 Secondary Received Data 18 Local Loopback 19 Secondary Request to Send 20 DTE Ready DTR 22 Ring Indicator ...

Страница 85: ...a Terminal Equipment FCCÑFederal Communications Commission ICSÑ Integrated Communication System IECÑInterExchange Carrier IPÑInternet Protocol ISDNÑIntegrated Services Digital Network ISPÑInternet Service Provider ITCÑIndependent telephone company kbit sÑKilobits per second LANÑLocal Area Network DB 9 pin RS 232 function CTA 500dm function 1 Received Line Signal Detector DCD 2 Received Data RD 3 T...

Страница 86: ...e Units PAPÑPassword Authentication Protocol PPPÑPoint to Point Protocol PSDNÑPublic Switched Digital Network PSTNÑPublic Switched Telephone Network TAÑTerminal Adapter TAPI SPÑTelephony Application Programming Interface Service Provider TCP IPÑTransmission Control Protocol and Internet Protocol UARTÑUniversal asynchronous receiver transmitter ...

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Nortel CTA 500dm, Руководство по установке

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Содержание CTA 500dm

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