<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"><base href="x-msg://387/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">It's a stretch, but yes, sort of.<div><br></div><div>With MGCP backhaul the q.921 frames are terminated on the router and q.931 frames are received at the router and back hauled to CUCM.</div><div><br></div><div>For that to work the router must successfully download config from CUCM to get the configured ISDN protocol. Is TFTP download from CUCM to router working? Is that config applied successfully? "debug ccm-manager" or see the Multiservice debug lookup tool.</div><div><br></div><div>After that the serial interface has to come up an q.921 has to start coming up. At that point router will initiate a TCP session to CUCM and send a DL_Estab_req message. If that session fails to come up for any reason then registration will never really happen.</div><div><br></div><div>MGCP depends on much communication with CUCM. Generally it helps with problem isolation to try to terminate the PRI just on the router. Skip the MGCP config and use a basic h.323 setup. If the d-ch and PRI still do not come up then you have a signaling problem between the carrier and your router. Also, with this setup you can change the ISDN switch type directly on the router in global config or under the specific interface.</div><div><br></div><div>-wes</div><div><br></div><div><div><div>On Mar 7, 2013, at 6:40 PM, "Heim, Dennis" <<a href="mailto:Dennis.Heim@wwt.com">Dennis.Heim@wwt.com</a>> wrote:</div><br class="Apple-interchange-newline"><div lang="EN-US" link="blue" vlink="purple" style="font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div class="WordSection1" style="page: WordSection1; "><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; ">I am running 15.1 IOS (3925) and Callmanager 8.6(1). We are integrated to a Nortel PBX, which is configured for PRI-NI2. When the gateway is configured for MGCP, the PRI largely does not come up. However, we see ISDN Q.931 messages referencing communication on channel 64. Obviously this is not quite right. Occasionally, the PRI will go into service and the message of channel 64 goes away. If we do a no mgcp/mgcp when it is working it usually does not come back up. If we switch to h.323/sip, the PRI comes up no problems.<o:p></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; ">Has anyone seen anything of this variety?<o:p></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><b><span style="">Dennis Heim |<span class="Apple-converted-space"> </span></span></b><b><span style="font-size: 10pt; font-family: Arial, sans-serif; ">Sr. Unified Collaboration Team Lead</span></b><b><o:p></o:p></b></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="">World Wide Technology | 314.212.1814 |<span class="Apple-converted-space"> </span><a href="mailto:dennis.heim@wwt.com" style="color: purple; text-decoration: underline; "><span style="color: blue; ">dennis.heim@wwt.com</span></a><b><o:p></o:p></b></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="">“Creating Impact, Ignition & Scalability”<o:p></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div></div>_______________________________________________<br>cisco-voip mailing list<br><a href="mailto:cisco-voip@puck.nether.net" style="color: purple; text-decoration: underline; ">cisco-voip@puck.nether.net</a><br><a href="https://puck.nether.net/mailman/listinfo/cisco-voip" style="color: purple; text-decoration: underline; ">https://puck.nether.net/mailman/listinfo/cisco-voip</a></div></div><br></div></body></html>