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Twinning not working on SIP Trunks 1

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voxvar

Programmer
Nov 18, 2011
199
US
IPO 9.1 I have 2 different SIP trunk providers and all is working fine...except. When a twinned call rings the cell as you try to answer, it immediately hangs up. This is happening on both SIP trunk providers and we have tested 3 different cell phones with different carriers. Any guidance will be appreciated.
 
sounds like the sip provider may be seeing the outbound call as origination form the mobile number (which is not valid on the circuit) & rejecting the call.

you could try adding another URI of outbound calls that forces the ID & route twinned calls Via that to see what happens.


A Maintenance contract is essential, not a Luxury.
Do things on the cheap & it will cost you dear
 
The SIP provider is showing the call completes (no blocking). I twinned to a land line with the same results.
 
As per Mforrence
What does Monitor show?

Also do you have RTP keep alives enabled?

A Maintenance contract is essential, not a Luxury.
Do things on the cheap & it will cost you dear
 
RTP keep alives are not enabled.
 
I enabled RTP keep alives and tested....no change
 
12:01:42 13384978mS CMTARGET: c0a80ac8000005ca 0.1482.0 120 GHOST:: Mobile twin answered too fast - must have gone to voicemail. Drop call.

You're answering the call in 3 seconds from it started ringing.
Check the Mobile Answer Guard setting in the twinning tab on the user.

"Trying is the first step to failure..." - Homer
 
My "Mobile Dial Delay" 7 and the "Mobile Answer Guard" 30
 
Mobile Answer Guard should be no less than 2.
With the current setting it will drop the call if it gets answered within 30 seconds from it tries to call the mobile.

Mobile Answer Guard: Default = 0 (Off). Range = 0 to 99 seconds.
This control can be used in situations where calls sent to the twinned destination are automatically answered by a voicemail service or automatic message if the twinned device is not available. If a twinned call is answered before the Mobile Answer Guard expires, the system will drop the call to the twin.

"Trying is the first step to failure..." - Homer
 
Should not be more than 2 seconds that is =)

"Trying is the first step to failure..." - Homer
 
Mobile Answer Guard at 1 and Mobile Answer Guard: Default = 0 works perfectly...Thank You
 
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