American Telecom AM64/128A manual LTU Ready No Alarm LTU Not Ready, Link Mode

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AM64/128A User Manual	Installation

Set the line rate (section 5.7.2) as required at both ends, and set the user data rate up on the master (section 5.5).

When the line is connected the FAULT LED should go out.

The interface details and synchronous or asynchronous working should now be configured at both ends. This is done using the option menu (section 5.6).

Note : When the AM64/128A has the G.703 interface fitted, then the unit is only operational in Master mode and a user rate of 64kbps. In this configuration, the unit will extract its timing from the G.703 interface and passes it to the Slave end of the link. It is NOT possible for the AM64/128A (set to Slave mode) to have a G.703 Interface fitted.

The status menu should then be examined to check that the unit is correctly configured.

The following data is provided by this menu:

(a)	Overall status (i.e. whether ready or not)

(b)Alarm messages

(c)User data rate

(d)Line rate

(e)Interface status

(f)Interface mode

To examine this data, first locate the status menu by using the left arrow key, then use the up/down arrows to look at each item in turn.

With no DTE (Data Terminal Equipment) connected the results should be:

(a)

(b)

S > LTU Ready

S > No Alarm

or	S > LTU Not Ready	(Depends upon interface details)

(c)Data rate as selected.

(d)Line rate as selected.

(e)Interface status as selected (usually all lines off, but depends on any X21bis options set)

(f)

S > Link Mode

If the status is not correct the BBM must be reconfigured. (See section 5 on menu operation).

If the status is correct the DTE (Data Terminal Equipment) or a data tester may now be plugged into the BBM.

In order for end to end data transfer to take place there must be no test loops active either locally or remotely.

(The power up default for the Test Menu is no loops).

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Contents ATL Part No /203/002/610 Issue 4 September Base Band ModemInformation Contained This Document is Confidential to Contents Appendix B Introduction International ModelsBaseband Modems Constructional DetailsInterface Modules System Overview System Overview BBM to BBM Link InstallationTesting Self Test PassLTU Ready No Alarm LTU Not Ready Link ModeNetwork Mode BBM to Line Card LinkFront Panel Features Menu OperationLoop back Off Loop back OnOver all Status Status MenuLoop Active LOS/CD Fail Alarm StatusNo Alarm No Signal Receiving AIS No Alignment CD FailLine Rate User RateInterface Status Operating Mode Link Mode Network ModeLocal loop from menu Top level display shows Loc Loop Off Test MenuLocal loop Loc Loop OnLoopback is applied by selecting the display Loopback Off LoopbackLocal loop from DTE Loopback OnRem Loop Off Remote LoopRemote Loop from menu Rem Loop OnRemote loop from DTE Binary PatternsBin Keys Off Sending Bin Overview Error Count Bit Error Rate BER = User Data Rate x TimeData Test OperationErrors Errors nnnnnnErrors s000001 Data TestInjecting 0s Injection ModeTransparent Mode Injecting 1sComms Evp Rx Evp Tx Service TestSvc Test Time If the count is stopped the display is StopLamp Test Self TestCommunication Channel Loopback Comm Loop OffRate Menu Rate 4.8KMaster 64K BT Slave 4.8K Option Menu 2 X.21bisSignalling Rate Asynchronous Mode3 G.703 Character Length Char LenMaster Slave Configuration MenuLine Rate Modem 3 X.21 Loop ControlSynchronisation Type for software versions below Ext Bit Clk Synchronisation Type for software version V1.3 and aboveExt Byte Clk Internal ClkPower Level 5 64k ModeMenu Lock Glossary of Terms Band circuits General Specifications Way D-type X.21 V.11 Connector pin allocation Way D type X.21 bis V.24 / V.28* Connector pin allocationAppendix a Interface Pin Connections Mrac Connector Pin allocation Way D-type V.36 Connector pin allocationWay D-type RS-530 Connector pin allocation Line ConnectorAppendix B Internal Link Settings Page Interface Modules Interface ModuleRS530 Interface Module 21bis Interface ModuleService Test Facilities Frame StructureAppendix C In Service Test LVD Safety Statements TTE Network and Safety statementsAppendix E 21 bit timing cable 15 way to 15 way D type plugs24 / V.28 bit timing cable 25 way to 25 way D type plugs 21 byte timing cable 15 way to 15 way D type plugs35 bit timing cable 34 way to 34 way Mrac plugs 21 bis V.36 bit timing cable 37 way to 37 way D type plugs RS530 bit timing cable 25 way to 25 way D type plugsAppendix F Troubleshooting Master Mode C 64K Rate Slave Mode 64K RatePower 10dBm Rate 64K