I have a MGCP gateway connected via PRI. Whenever a call comes in from the PRI, the IP Phone rings a single time and then disconnects. On the gateway, debug isdn q931 reports:<div><br></div><div><div>*Mar 1 11:04:27.327: ISDN Se1/0:23 Q931: RX <- SETUP pd = 8 callref = 0x0008 </div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>Bearer Capability i = 0x8090A2 </div><div><span class="Apple-tab-span" style="white-space:pre"> </span>Standard = CCITT </div><div><span class="Apple-tab-span" style="white-space:pre"> </span>Transfer Capability = Speech </div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>Transfer Mode = Circuit </div><div><span class="Apple-tab-span" style="white-space:pre"> </span>Transfer Rate = 64 kbit/s </div><div><span class="Apple-tab-span" style="white-space:pre"> </span>Channel ID i = 0xE1808397 </div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>Preferred, Interface 0, Channel 23 </div><div><span class="Apple-tab-span" style="white-space:pre"> </span>Calling Party Number i = 0x00C0, N/A </div><div>
<span class="Apple-tab-span" style="white-space:pre"> </span>Plan:Unknown, Type:Unknown </div><div><span class="Apple-tab-span" style="white-space:pre"> </span>Called Party Number i = 0xA1, '5032733100' </div><div>
<span class="Apple-tab-span" style="white-space:pre"> </span>Plan:ISDN, Type:National</div><div>*Mar 1 11:04:27.343: ISDN Se1/0:23 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x8008 </div><div><span class="Apple-tab-span" style="white-space:pre"> </span>Cause i = 0x80A9 - Temporary failure</div>
<div><br></div><div>I'm wondering if this is a dsp issue, as a call into the POTS line works fine, but sending that call to an IP Phone I get this issue. Any suggestions?</div></div>