Appendix a Interface Pin Connections | American Telecom AM64/128A

AM64/128A User Manual	Appendix A - Interface Connections

APPENDIX A - Interface Pin Connections

25 Way D - type X.21 bis (V.24 / V.28*) Connector pin allocation

*V.28 defines the electrical characteristics of the circuits of a V.24 interface.

Note: Circuit 105 Request to send may have to be set in the Options Menu - see Appendix F (Troubleshooting).

	Pin	Circuit	Description	TYPE
	Pin	Circuit	Description	SITS 89/43
				SITS 89/43

	7	102	Common Return	Common
	2	103	Transmitted Data	Load
	3	104	Received Data	Generator
	4	105	Request to Send	Load
	5	106	Ready for Sending	Generator
	6	107	Data Set Ready	Generator
	20	108.1	Connect Data Set to Line	Load
	8	109	Data Channel Received Line Signal Detector	Generator
	15	114	Transmitter Signal Element Timing (DCE)	Generator
	17	115	Receiver Signal Element Timing (DCE)	Generator
	21	140	Remote Loopback for Point-to-Point circuits	Load
	18	141	Local Loopback	Load
	25	142	Test Indicator	Generator
	24	113	External Transmitter Signal Element Timing	Load

15 Way D-type X.21 (V.11) Connector pin allocation

	Pin				TYPE
A wire	B wire	Unbal	Circuit	Description	SITS 89/43

		8	G	Signal Ground / Common Return	Common

15	1		S EXT	External Signal element Timing	Generator

2	9		T	Transmit	Load

4	11		R	Received	Generator

3	10		C	Control	Load

5	12		I	Indication	Generator

6	13		S	Signal Element Timing	Generator

7	14		B	Byte Timing	Generator

7	14		F	Frame Start Identification	Generator

A-1

Image 40

American Telecom AM64/128A Appendix a Interface Pin Connections, Way D type X.21 bis V.24 / V.28* Connector pin allocation

Contents

ATL Part No /203/002/610 Issue 4 September Base Band Modem Information Contained This Document is Confidential to Contents Appendix B Introduction International Models Baseband Modems Constructional DetailsInterface Modules System Overview System Overview Installation TestingBBM to BBM Link Self Test Pass LTU Ready No Alarm LTU Not Ready Link Mode Network Mode BBM to Line Card Link Front Panel Features Menu Operation Loop back Off Loop back On Over all Status Status MenuLoop Active Alarm Status No Alarm No Signal Receiving AIS No AlignmentLOS/CD Fail CD Fail Line Rate User RateInterface Status Operating Mode Link Mode Network Mode Test Menu Local loopLocal loop from menu Top level display shows Loc Loop Off Loc Loop On Loopback Local loop from DTELoopback is applied by selecting the display Loopback Off Loopback On Remote Loop Remote Loop from menuRem Loop Off Rem Loop On Remote loop from DTE Binary PatternsBin Keys Off Sending Bin Error Count Bit Error Rate BER = User Data Rate x Time Data TestOverview Operation Errors nnnnnn Errors s000001Errors Data Test Injection Mode Transparent ModeInjecting 0s Injecting 1s Service Test Svc TestComms Evp Rx Evp Tx Time If the count is stopped the display is Stop Lamp Test Self Test Communication Channel Loopback Comm Loop Off Rate Menu Rate 4.8K Master 64K BT Slave 4.8K Option Menu 2 X.21bis Signalling Rate Asynchronous Mode3 G.703 Character Length Char Len Master Slave Configuration MenuLine Rate Modem 3 X.21 Loop ControlSynchronisation Type for software versions below Synchronisation Type for software version V1.3 and above Ext Byte ClkExt Bit Clk Internal Clk Power 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 allocation Way D-type RS-530 Connector pin allocation Line Connector Appendix B Internal Link Settings Page Interface Modules Interface Module RS530 Interface Module 21bis Interface Module Service Test Facilities Frame Structure Appendix C In Service Test LVD Safety Statements TTE Network and Safety statements Appendix E 21 bit timing cable 15 way to 15 way D type plugs 24 / 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 plugs Appendix F Troubleshooting Slave Mode 64K Rate Power 10dBmMaster Mode C 64K Rate Rate 64K