
QT; Reviewed:
SPOC 9/1/2011
Solution & Interoperability Test Lab Application Notes
©2011 Avaya Inc. All Rights Reserved.
PSTN calls over PRI trunk.
Codec negotiation
2.2. Test Results
The objectives outlined in Section 2.1 were verified. The following observations were made
during the compliance testing:
It is highly recommended to disable the media security on the Call Server to avoid some
unexpected behaviors such as one way audio from a call made from PSTN over a PRI
trunk.
MWI indicator being turned off by the NOTIFY message for the Do Not Disturb = no.
This issue is being addressed by Ascom with the RMS#18266. Avaya utilizes the SIP
NOTIFY message format of MWI (RFC 3842) for the Do Not Disturb message, which is
not covered in the mentioned RFC.
Local Call Waiting and Call Forward Busy are not support due to the CS1000 SIP line
gateway will always return 486 Busy Here.
2.3. Support
Technical support for the Ascom IP DECT product can be obtained through a local Ascom
supplier. Ascom global technical support:
Email: support@ascom.se or Help desk: +46 31 559450
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