MGCP QSIG Issue after upgrade from CUCM 7.0 to 7.1(2b)
We currently have a H323 3845 ISR gateway with a MGCP QSIG interface connected to an Ericsson MD110.
When we were running CUCM 7.0 we had calling and called name presentation between both systems however since upgrading to CUCM 7.1(2b) we are not receiving the alerting/called name when CUCM calls Ericsson. However once the call is connected it is then presented. Ericsson to CUCM works fine.
The QSIG Variant in the Service Parametres is set to ISO and using ASN.1 ROSE OID of Local Value which is now also set on the interface of the gateway since CUCM 7.1.
anyone got any ideas on why its behaving like this??
ASN.1 ROSE OID Encoding and Calling Name in setup msg using PRI QSIG.
Outbound calls over QSIG gateway fail or supplementary services like calling name, connected name, callback etc.. fail
CUCM 7.X and higher
QSIG configuration : Serviceparameter - QSIG variant = ECMA Serviceparameter - ASN.1 ROSE OID Encoding = ECMA (GLOBAL)
Gateway - QSIG Variant = No Changes Gateway - ASN.1 ROSE OID Encoding = No Changes
Configure on gateway
Gateway - QSIG Variant = ECMA Gateway - ASN.1 ROSE OID Encoding = ECMA (GLOBAL)
Further Problem Description:
With the configuration documented under conditions, CUCM will encode the Facility/Rose Invoke as ECMA / Local while it is expected to be ECMA / Global. (as configured on the remote PBX) Depending on the remote PBX configuration/type the call will get released or Rose Invoke will get rejected.
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