Networking G3 to Nortel "81 1

[dempson]

Have spent a couple days trying to set up a tie line between a Meridian and my G3R. I have set up paraneters as:
ESF
B8ZS
Robbed-Bit(apparently no equivalent for this field exists in Nortel side.)

svery time I release my trunks I see all sorts of traffic like it is sending or searching for signal, they then busy, and finally disconnect.

Tech on far side stated that he was seeing all 1's and I explained that the idle code for Definity was to send 1's...

He stated it should be zero because that was the idle code for his switch; at which point I changed setting on idle code to 0's..

Trunks reacted same way however; some busy, then disconnect, while some stayed in idle. When he used a dac from his side he was able to reach my switch and dial extensions on my end....

Funny thing is he came across a trunk that was listed as disconnected when I went to the status trunk group screen.

when I dial my TAC to get across the span, I get a second dial tone which makes me think I'm on his switch, though he states that he sees no activity, but if I dial any digits subsequent to this secondary dial tone I get nothing, followed by busy tone after what would seem to be some swort of time out.

I've tried playing with different settings but i end up with the same progression of trunks going to MA/Busy, followed by disconnection.

I get the impression that it is a signaling mismatch of some kind but I'm running out of time to play with it as the site is coming on board next week.

Any ideas? I looked through previous trails and found little or no references.

 

[BIS]

A shot in the dark - master/slave settings?

 

[dimas]

Hi
Could you please show your ds1 form and trunk group first page?

 

[dempson]

pages as requested, i came in this morning and all lines were showing disconnected. I was thinking about the clocking issue to so I'm going to look at that now.


71 Group Type: tie CDR Reports: y
Group Name: test COR: 79 TN: 1 TAC: 1871
Direction: two-way Outgoing Display? n Trunk Signaling Type:
Dial Access? y Busy Threshold: 255 Night Service:
Queue Length: 0 Incoming Destination:
Comm Type: voice Auth Code? n
Trunk Flash? n

TRUNK PARAMETERS
Trunk Type (in/out): wink/wink Incoming Rotary Timeout(sec): 5
Outgoing Dial Type: tone Incoming Dial Type: tone
Wink Timer(msec): 300 Disconnect Timing(msec): 500
Digit Treatment: Digits:
Sig Bit Inversion: none
Analog Loss Group: 9 Digital Loss Group: 13
Incoming Dial Tone? y

Disconnect Supervision - In? y Out? n
Answer Supervision Timeout: 0 Receive An



Location: 02C15 Name: test
Bit Rate: 1.544 Line Coding: b8zs
Line Compensation: 1 Framing Mode: esf
Signaling Mode: robbed-bit



Interface Companding: mulaw
Idle Code: 11111111





Slip Detection? n Near-end CSU Type: integrated

 

[lopes1211]

Can you post the Nortel config as well? It's probably the trunk type "wink/wink" not matching on the Nortel side. -CL

 

[mlinman]

Did you get this working? If so please post settings, I'm trying to do something very similar.

Thanks

 

[dempson]

turns out the problem was with the provider and the way they grew the channel

however some interesting tidbits were that we changed the idle code on the DS1 form to: 01010100

that might make the difference; engineer i was speaking with indicated that this is the code they use when QSIG is turned up or something of that nature.

nortel settings were:

B8ZS; ESF; 4 wire e&m

thanks for all the help