Cisco Cisco Unified Contact Center Enterprise 9.0(2) Technical References

 

 

 

Transaction Link Port Configuration 

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contains conductors for all twenty-five signals including the crucial 
clocking signals. If it is necessary to extend or replace this cable for a 
longer cable, a straight cable that passes all twenty-five signals end to end 
is required.  

Cables must be evaluated very carefully when determining suitability 
since asynchronous (or terminal cables) may look similar, but these 
cables generally do not pass the clocking signals since asynchronous 
communication does not require clocking. Use of an asynchronous cable 
will result in an inoperable Transaction Link.  

In addition to the straight cable, Cisco will provide a synchronous null-
modem eliminator adapter. The adapter has been specially designed to 
crossover the dataset leads and clocking signals to eliminate the need for 
short haul modems. The connector supplied by Cisco must be used in any 
cable configuration. As a customer, you need not substitute in house 
connectors for this part since it is a custom connector (Belkin P/N 
A4A602-16298 Cisco V.24 Null Modem Adapter).  

 

Spectrum ACD 

PG 

Male DB-25

 

Male DB-25

 

Female DB-25  
Male DB-25

 

25 Wire Straight Cable 

Adapter 

Following is the correct pin-out for a Synchronous Null Modem Adapter, 
DB-25 connector on both ends:

 

1<->1 
2<->3 
3<->2 
4&5<->8 
6<->20 
7<->7 
8<->4&5 
15&17<->24 
20<->6 
24<->15&17  

An Asynchronous Null Modem Adapter used for connecting a CRT or 
Printer will not work in X.25 as leads 15,17, & 24 are needed to pass the 
synchronous clocking for X.25. 

All sessions are initiated by the PG. The Spectrum acts as the server 
system. The PG initiates a session by establishing a socket connection to 
the port configured to provide the Transaction Link on the LAN capability. 
The PG client uses the Internet IP address associated with the LAN SDP