tom b

We are connecting two offices over a "dry" E1. At the moment nothing is working, the trunk group shows out-of-service.
I think what we have is a clocking problem, am I correct in thinking that one PBX should recover the clock signal from the line? How do I check/set the master/slave status of the cards?
Both PBX are Prologix both having DS1 cards of type TN464F.

thanks,

Tom.

ahays

I doubt that clocking is the issue although there may be other programming issues. If you status the signaling-group is it up? Can you describe the physical connectivity? I know you said "dry" E1, but where are the 2 pair coming from, what's the distance between these two ProLogix systems, and how have you connected the 2 TN464's together? An end-to-end, wire-to-wire description would be helpful.

regs,

.al.

__________________
Al Hays, ACE, MCSE, CCNA
Homepage: http://www.jeral.com/
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nexSIP

I agree. You should still get a E1/T1 link even though you are slipping.

tom b

The signalling groups showed everything as offline.
The end to end description is:
Prologix with TN464F - 888b adapter - Patton 1088/K
single copper pair
Patton 1088K - 888b - TN464F

As you suspect clocking was not the problem. The Patton box had no indication as to which G703 connector was RX and which TX. The manaual had a diagram that was back to front. We swapped them over and it started working.

thanks

corndog

If I am answering the wrong question, just ignore me, I am only firing on three cylanders and it makes spelling and thinking difficult.
As far as clocking, u can check the synch of the pbx by " status sync". If a pbx has a ds1 connected to the outside world, then the syn should be set to that board for timing. If u have a network of pbx and tied together, then one pbx should be syn to the ds1 that is the most reliable outside source. Then all the other pbx should be synched to this pbx by synching off of the tie that connects to the main pbx. U can also do the command "change syn" to set up the syn plan. Only the boards that are being used for for synch should have "slip detection? yes". If when u do "status syn" and the system has any ds1 boards, and the syn is on the tone board, then u will get slips on your t-1 trunks and complaints from your users. set the syn back to the proper t-1 board.

Bob Smith

Hi Tom, I have been working on a connectivity issue with a Patton 1088 modem and came across this posting from you, just curious to understand more details of which diagram in the manual have to be swapped

Thanks
Bob

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