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New Member

Switched over to MGCP from H323, no incoming calls fast busy

Hello, I'm on the network side crossing over to the Voice side. We replaced a 3825 Voice Router at a branch office with a 2921. The 3825 was setup with a T1 and had a PRI connected to the FXO ports.  The 2921 is now connected via fiber and TAC helped get the router registered to the Call Manager. I'm trying to match up the old dial peers on the new router. I can't make out going or receive incoming calls, I get a This Call Can't be completed at this time.

When it was on the T1, the branch office was using H323. Now that's connects to the same CUCM, it's on MGCP. Shouldn't the old Dial Peers work on the new router?

1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Switched over to MGCP from H323, no incoming calls fast busy

Is the GW registered?

Are your CSS/partitons and dial plan correct?

HTH

java

if this helps, please rate

www.cisco.com/go/pdihelpdesk

HTH

java

if this helps, please rate

www.cisco.com/go/pdi
6 REPLIES
Cisco Employee

Switched over to MGCP from H323, no incoming calls fast busy

No, because MGCP uses no dial-peers.

And the message you get is most likely also related to CSS/partitions issues.

Drop all your dial-peers, CUCM will do all the routing when you use MGCP.

HTH

java

if this helps, please rate

www.cisco.com/go/pdihelpdesk

HTH

java

if this helps, please rate

www.cisco.com/go/pdi
New Member

Switched over to MGCP from H323, no incoming calls fast busy

I removed the dial peers, still get the fast busy. Might the issue be on the Call Manager?

Cisco Employee

Switched over to MGCP from H323, no incoming calls fast busy

Is the GW registered?

Are your CSS/partitons and dial plan correct?

HTH

java

if this helps, please rate

www.cisco.com/go/pdihelpdesk

HTH

java

if this helps, please rate

www.cisco.com/go/pdi
New Member

Switched over to MGCP from H323, no incoming calls fast busy

TAC helped me get the 2921 register with the Call Manager.

I'm using the same Route Group the old router had.

How would I check in the Call Manager for the CSS and Dial Plans?

I'm used to working on CME within a closed network, but our Teleco guys are all Avaya and we are Cisco, we are crossing into VoIP.

Cisco Employee

Switched over to MGCP from H323, no incoming calls fast busy

So, you added the new MGCP GW into the RG from your old config, and removed the H323??

Is the GW currently registered?? did you go into the page and confirmed that?

What are you using? T1? E1? FXO?

Dial plan and how to dial is something you need to figure out by looking at your config, no way to tell you how it should look like.

Best you can do if you don't know how that is configured is to use DNA to check for routing issues, if there are any, you'll need to correct them.

HTH

java

if this helps, please rate

www.cisco.com/go/pdihelpdesk

HTH

java

if this helps, please rate

www.cisco.com/go/pdi
New Member

Switched over to MGCP from H323, no incoming calls fast busy

I had to configure the FXO ports for the DN to route the incoming calls. I learned just because the Call Manager configured the Voice Gateway as a client, you still must configure the FXO ports to route the main DID to a DN on the LAN.

Great advice, learning alot about telephony and VoIP.

Wish I had more experience troubleshooting the CUCM and DID portion, also learned the phone compnay doesn't turn up their ISDN switch until you configure your PBX. And a PRI testing isn't the same as the data T1, it's about having the Signaling channel turned up and or configured.

Lessons learned, wished I would have crossed over to VoIP earlier.

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