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Old 07-21-2014, 05:01 AM
ghall1 ghall1 is offline
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Question IP500v2 v9.0.3 Send original calling party for forwarded and twinning calls

IP500v2 V9.0.3 with BT Isdn 2 in UK
We have had quite a few requests recently for forwarded calls to present the calling party's CLI, most of these customers have moved from analogue lines and had previously used BT Star Services.

BT Isdn2 is Point to Point
We have tried altering the line settings and enabling Partial Rerouting & Send origional calling party for forwarded and twinning calls and we can see the cpn number of the caller being sent out on system status but this seems to be blocked by BT and the Isdn2 number is always presented.

Has anybody got this working?
If so what Isdn features did you have to enable on the Isdn2 circuit
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Old 07-22-2014, 03:37 AM
richa164 richa164 is offline
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Not possible in the uk on isdn circuits , BT forbid this and block the service at network level.

You can get this to work on sip trunks Voice flex i know works , that said Avaya did break this on around R7 ,R9 now works, though my point being it could well happen again.
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Old 07-22-2014, 03:53 AM
richa164 richa164 is offline
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Update , seems they now offer this service on PRI trunks ,,,see below link

https://business.forums.bt.com/t5/Ph...pe-5/td-p/2403

a much simpler solution is sip
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Old 07-22-2014, 05:02 AM
ghall1 ghall1 is offline
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Thanks for the reply richa164, I know this works on Sip but these customers prefer the reliability of iSDN2.
Some forums say it does work http://www.tek-tips.com/viewthread.cfm?qid=1698373
So I hoped to get a respoinse from an Avaya Bod to confirm yes or no!
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Old 07-23-2014, 06:38 AM
richa164 richa164 is offline
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The Avaya system does support the feature , this thread is slightly different as it uses partial re-routing meaning line signalling messages drop the call from the ipo and connect through to end user.

First check with BT if cli type 4/5 is allowed on BRI yet , if not you will have to pay for partial re-routing and tick the field on the line form in Manager.
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Old 07-28-2014, 01:17 AM
kirchenlo kirchenlo is offline
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I am currently working on similar issue. What I found is that you need to ask your carrier to activate on the ISDN lines the feature called "CLID no screening" or "CLID no screening special".

On the otherhand side you need to make sure that in your ISDN trace you sent the redirecting number.

86048150mS ISDNL3Tx: v=1 peb=1 ISDN Layer3 Pcol=08(Q931) Reflen=2 ref=0068(Remote)
Message Type = Setup
InformationElement = BearerCapability
0000 04 03 80 90 a3 .....
InformationElement = CallingPartyNumber
0000 6c 0b 00 83 36 32 31 32 38 37 32 30 35 l...621287205
InformationElement = CalledPartyNumber
0000 70 0a 80 36 32 31 32 38 37 32 31 30 p..621287210
InformationElement = RedirectingNumber
0000 74 0c 00 00 8f 34 39 39 34 39 34 33 30 30 t....499494300
InformationElement = Sending Complete

I am facing now the problem that the number is properly shown but my carrier does reject all other calls. I am working on it and I hope I get it working. As soon as it works I will post my solution.
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