Hoping a resident gateway guru can take a peek at this, to see if i'm barking up the wrong tree here<br><br>We have a remote office with a legacy PBX of some sort which we have interfaced with our call manager 5.1.3 system via a PRI to a 2811 router (MGCP controlled). Has been working fine for about a year, but the past few days they are no longer able to call IP Phones on our network.. but they can make calls out of our PSTN gateways here on the main campus. Basically they call an IP Phone, it rings here but then has reorder tone. Calls setup and complete fine in the other direction, it's only calls from the remote site to main campus IP phones that cannot connect.<br>
<br>I'm trying to get their telecom partner to take a look at their switch as well to see if anything changed, but trying to do my own troubleshooting in the meantime.<br><br>I'm poking around at the trace files, <br>
>From the call manager point of view, everything appears to work fine in the ISDN/MGCP call setup from what I understand, up until the CONNECT portion; I send CONNECT message to the remote switch, and get a STATUS message back with an error about IE not implemented, which is then followed up by a DISCONNECT from call manager. Right after I send the DISCONNECT I get the CONNECT_ACK that I was supposed to get from the initial CONNECT message. Then the call tears down normally.<br>
<br>From the IP Phone side, the media stream opens and then closes immediately according to the trace file.<br><br>My question is, is the status message coming in before the connection_ack what is causing call manager to drop the call? <br>
Newbie question, can I just uncheck "Display IE Delivery" in CCM to get rid of that error?<br><br>OUT:<br>CONNECT, pd = 8, callref = 0x8001<br>Display i = 'Ed Leatherman'<br><br>IN:<br>STATUS, pd = 8, callref = 0x0001<br>
Cause i = 0x81E3 - IE Not implemented<br>Call State i = 0x04 - Call delivered, ITU-T standard<br><br>OUT (MGCP):<br>MGCP Version 0.1<br><a href="mailto:S0/SU0/DS1-0/23@HSC-East-VGW-1.nsog.wvu.edu">S0/SU0/DS1-0/23@HSC-East-VGW-1.nsog.wvu.edu</a><br>
Sequence 792352<br>NotificationRequest (RQNT)<br>RequestIdentifier(X): 17<br>RequestedEvents(R): D/[0-9ABCD*#]<br>SignalRequests(S)<br>QuarantineHandling(Q): process,loop<br><br clear="all">OUT (ISDN):<br>DISCONNECT, pd = 8, callref = 0x8001<br>
Cause i = 0x80E5 - Message not compatible with call state or protocol error threshold exceeded <br><br>IN (ISDN):<br>CONNECT_ACK, pd = 8, callref = 0x0001<br><br><br>-- <br>Ed Leatherman<br>Senior Voice Engineer<br>West Virginia University<br>
Telecommunications and Network Operations