Avaya EC500 Manual Do Utilizador

Issue 3  January 2002

■

Perform Hardware Checks:

If using DS1 loop back:

■

If amphenol connector is being used:

— Verify that the loop back cable is properly 

cross-connected as specified in Chapter 2, 
“Installation and Planning” of the EC500 Release 3 
Installation and Administration Guide. 

— If the connection is correct, the problem could be a 

bad cable. Replace the cable.

■

If a D8W connector is being used:

— Verify that it is connected to Slot 8 of the Type 356A 

connector.

— If the above check is OK, the cause of the problem 

could be a bad cable. Replace the cable.

— The cause of the problem could also be that the 356A 

connector is bad. Replace the connector.

If using H.323 IP trunks for the loop back arrangement:

■

Verify that the administration is as specified in the EC500 
Release 3 Installation and Administration Guide’s Chapter 3, 
“Administration.”

■

Busy out and release the two signalling groups associated 
with EC500 loopback.

■

See maintenance documentation that can be obtained from 
the web site:

http://prodpubs.avaya.com/final/definity/r9.5/233758_3.pdf

6. Check the 

 of the inbound trunk in the loop back arrangement and 

verify that the trunk does not have calling restrictions, that it is not outward 
restricted, and that its Facility Restriction Level (FRL) is sufficient to access 
an external ISDN trunk facility. If any such problems are found, administer 
the right 

 for that trunk.

7. Check the ARS Analysis table and make sure that there is an entry to route 

the cell phone number over an ISDN trunk on the switch.

If the problem cannot be corrected by following the above procedure(s) or those 
listed in Chapter 1, escalate the issue to an Avaya technician. In addition to the 
checks listed above, verify with the technician that the EC500 XMOBILE station is 
not restricted from receiving incoming calls.