Cannot get transfer to work on unmanaged GW

[Sven Evensen]

We have setup sipx 4.4 to work with a new ITSP. They do not support
re-invites (bugger), but do support REFER, I think there is a CME on the
other side.

AN outbound call comes in to auto-attendant which upon entering "1" should
transfer to other internal extension. This fails and user hears busy/error
tone.

Can anyone see in the attached pcap if there is something wrong on sipx
side or itsp side.

Thanks,
Sven
--
*Sven Evensen, Operations Consultant*

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[Joegen Baclor]

sipX sends REFER to the "CME VoIP PBX Gateway" with the following

Refer-To:
<sip:***@ec2-176-34-141-24.eu-west-1.compute.amazonaws.com?X-sipX-Authidentity=%3Csip%3A%7E%7Eid%7Emedia%40ec2-176-34-141-24.eu-west-1.compute.amazonaws.com%3Bsignature%3D4FE9A736%253A%253A38de6bed2617768388327a890026f8c6%3E&REFERENCES=04c2c635413e45f03c65929c3f6f6d1a%4094.231.97.13%3Brel%3Drefer>


Which should have resulted to an INVITE coming from "CME VoIP PBX
Gateway" to sipX as follows

INVITE
sip:***@ec2-176-34-141-24.eu-west-1.compute.amazonaws.com SIP/2.0
X-sipX-Authidentity:
sip:~~id~***@ec2-176-34-141-24.eu-west-1.compute.amazonaws.com;signature=D4FE9A736%253A%253A38de6bed2617768388327a890026f8c6%3E
REFERENCES: 04c2c635413e45f03c65929c3f6f6d1a=94.231.97.13;rel=refer
.
.
.
.




Obviously it never came based on the capture.

However, it did send NOTIFYs for 183 and 200 Ok merely milliseconds
away from each other which are obviously bogus.

If they claim to support REFER, also ask them if they support custom uri
headers in a refer. In this case X-sipX-Authidentity and REFERENCES
headers.

Post by Sven Evensen
We have setup sipx 4.4 to work with a new ITSP. They do not support
re-invites (bugger), but do support REFER, I think there is a CME on
the other side.
AN outbound call comes in to auto-attendant which upon entering "1"
should transfer to other internal extension. This fails and user hears
busy/error tone.
Can anyone see in the attached pcap if there is something wrong on
sipx side or itsp side.
Thanks,
Sven
--
*Sven Evensen, Operations Consultant*
*OnRelay*
Elizabeth House ? 39 York Road, London SE1 7NQ, UK ? [phone]
<http://www.onrelay.com/>
This electronic message transmission contains information from
OnRelay, Ltd., that may be confidential or privileged. The information
is intended solely for the recipient and use by any other party is not
authorised. If you are not the intended recipient, be aware that any
disclosure, copying, distribution or use of the contents of this
information or any attachment, is prohibited. If you have received
this electronic transmission in error, please notify us immediately by
delete this message, along with any attachments, from your computer.
Registered in England No 04006093 Š Registered Office 1st Floor, 236
Gray's Inn Road, London WC1X 8HB
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