Path replacement Ericsson-Cisco QSIG

[rmontesl]

Hello,

I have a Cisco CallManager 4.1(3)SR2 cluster connected through a cisco router 2851 with a MGCP PRI QSIG with an Ericsson MD110 running BC10.

If I have an IP phone forwarded to another IP phone, and I try to call the first one from an analog phone that should go across the QSIG, call rings for a second in the final phone and the hangs.

Any idea?