CallManager with H323 Gateway

[spiritussanctus]

Hello,
I have a little problem. I'm using CCM 3.2 and i want to configure a 2691 router to be H323 gateway. I've configured 2 dial peers: 1 pots and 1 voip pointing CCM ip address. I also added the gateway in CCM configuration with a route pattern to match any 0.! with discard "PreDot" on gateway. But I'm not able to make a call through PSTN.

Any recomandations ?

Thanx

 

[Wavesg]

Can you Post your config?

Stay cool; it’s not over yet!

 

[spiritussanctus]

Here it is:
!
interface FastEthernet0/1
ip address 172.16.60.1 255.255.255.0
ip access-group 102 in
no ip redirects
no ip proxy-arp
ip nat inside
ip inspect fw-out in
ip policy route-map telcom
duplex auto
speed auto
no keepalive
no cdp enable
h323-gateway voip interface
!
!
voice-port 1/1:0
!
!
mgcp profile default
!
!
!
dial-peer cor custom
!
!
!
dial-peer voice 1 pots
destination-pattern T
no digit-strip
direct-inward-dial
port 1/1:0
forward-digits all
!
dial-peer voice 2 voip
destination-pattern 0..
session target ipv4:172.16.60.25
codec g711alaw
!
gateway
!
!

 

[spiritussanctus]

172.16.60.25 is the IP address of CCM, and 172.16.60.1 is the gateway address specified in CCM Gateway configuration

 

[Wavesg]

Can you send the serial configuration..ie controller and interface configuration. Also get rid of this command in your configuration "mgcp profile default" since you are not using an MGCP gateway.

Stay cool; it’s not over yet!

 

[computerhighguy]

OK. I need more information. I am willing to bet that your dial peer voice 2 VOIP is the problem. Right now your gateway is setup to accept all incoming calls as DID. Here are my questions.

1) What are your DNIS digits you are expecting?
2) What are your extensions on the call manager system?
3) I am assuming this is a T-1 (we use PRIs and they are in the format 1/1:23) right?
4) In your description, are you trying to get outbound or inbound calls to work? I am unclear what you mean by "make a call through PSTN".

I would add this to the voip dial peer.
dtmf-relay h245-alphanumeric

Keep in mind that your voip dial peer is expecting a 3 digit DNIS starting with a 0. If anything else comes in then the call will fail (but the gateway will accept the handoff from the PSTN). It also is setup to send the CCM all 3 digits. Example. You are getting 012 as the DNIS from your telcom provider. It is accepted as inbound (everything is). It them must match another dial peer for where to route it. In this case, dial peer 2. It would then send the CCM all 3 digits (i.e. 012) and would then ring extension 012. If you only wanted to send the last 2 digits, then you would need to some digit manipulation.

 

[spiritussanctus]

ok, the controller is E1 with r2-compelled signaling. Here is the configuration:

!
controller e1 1/1
ds0-group 0 timeslots 1-15,17-31 type r2-digital r2-compelled
!

I'm expecting 3 DNIS digits, all starting with 0 : 0xx
I also added " dtmf-relay h245-alphanumeric" command on my voip dial peer. Still not working. Do I need to provide the voice-port 1/1:0 with "cptone" command or other commands?

Thanx

 

[tboynton]

Just out of curiosity, why did you decide to go with H323 as opposed to MGCP. In my experience, mgcp works much better and you can just let callmanager deal with routing.

 

[computerhighguy]

I am assuming that this is in Europe right? We have a H323 gateway we use to interface our PBX in Germany. We use ISDN based FX cards (should be about the same thing as your E1 only less ports). I have to add the following to my voice ports.

voice-port 2/0/1
compand-type a-law
cptone DE

a-law is the European standard. By default they are set to u-law (the US standard). Try adding the a-law command and the cptone for your country and see if that works.

 

[spiritussanctus]

Thanks a lot, it works now