Voice over IP Cisco - Qsig issue

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Author Qsig issue
Steve Summers

2005-06-20, 7:45 am

We recently experienced a similar issue when doing QSIG between a 6608
and a Tadiran Coral 3. We were not getting DTMF inbound from the PBX.
The solution was to modify the default values of the advanced ccm
service parameters

* ASN.1 ROSE OID Encoding*

was changed to ISO from its default on cisco of "use local value"

* QSIG Variant

was changed to ECMA from its default value of ISO.

This was matched on the Tadiran Side and we then had DTMF.
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