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New Member

MGCP gateway can't make outbound calls

Hi

We have a CallManager 4.1 configured with a MGCP gateway and work fine, recently we installed a new CUCM 8.6.2 with the same MGCP gateway configuration, i changed the IP address of the Call Manager on the gateway  and run "no mgcp" and "mgcp" commands and the gateway is registred to  the new CUCM. inbound calls work fine but i can't make an outbound calls  knowing that they can reach the gateway when a run a mgcp debug.

MGCP Configuration:

controller E1 1/0

pri-group timeslots 1-31 service mgcp

!

interface Serial1/0:15

no ip address

encapsulation hdlc

isdn switch-type primary-net5

isdn incoming-voice voice

isdn bind-l3 ccm-manager

no cdp enable

!

ccm-manager fallback-mgcp

ccm-manager redundant-host y.y.y.y

ccm-manager mgcp

ccm-manager music-on-hold

ccm-manager config server x.x.x.x 

ccm-manager config

!

mgcp

mgcp call-agent x.x.x.x 2427 service-type mgcp version 0.1

mgcp dtmf-relay voip codec all mode out-of-band

mgcp rtp unreachable timeout 1000 action notify

mgcp modem passthrough voip mode nse

mgcp modem passthrough voip codec g711alaw

mgcp package-capability rtp-package

no mgcp package-capability res-package

mgcp package-capability sst-package

no mgcp package-capability fxr-package

mgcp package-capability pre-package

no mgcp timer receive-rtcp

mgcp sdp simple

mgcp fax t38 inhibit

mgcp rtp payload-type g726r16 static

!

mgcp profile default

11 REPLIES
Cisco Employee

MGCP gateway can't make outbound calls

What does the MGCP debug "debug mgcp packets" show when making an outbound call?

Cisco Employee

MGCP gateway can't make outbound calls

Exactly what happens when you call??

HTH

java

If this helps, please rate

www.cisco.com/go/pdihelpdesk

HTH

java

if this helps, please rate

www.cisco.com/go/pdi
Cisco Employee

MGCP gateway can't make outbound calls

Hi,

Like others mentioned, what is the symptom when you call?

++ Run DNA and make sure there is no CSS/Partition issue.

++ Collect debug isdn q931 and debug mgcp packets for one test call.

++ If possible detailed CCM logs, if in case CCM is releasing the call.

Murali

New Member

Re: MGCP gateway can't make outbound calls

Hi,

I cheked, there is no problem in CSS/Partition.

Debug MGCP Packets:

Apr 24 19:24:27.635: MGCP Packet sent to 10.1.203.2:2427--->

NTFY 109093925 *@Voice-Gateway MGCP 0.1

X: 0

O:

<---

Apr 24 19:24:27.635: MGCP Packet received from 10.1.203.2:2427--->

200 109093925

<---

Apr 24 19:24:42.640: MGCP Packet sent to 10.1.203.2:2427--->

NTFY 109093926 *@Voice-Gateway MGCP 0.1

X: 0

O:

<---

Apr 24 19:24:42.640: MGCP Packet received from 10.1.203.2:2427--->

200 109093926

<---

Cisco Employee

Re: MGCP gateway can't make outbound calls

From the logs atatched:-

++ Is this the call ?

Apr 24 19:02:00.516: ISDN Se1/0:15 Q931: TX -> SETUP pd = 8  callref = 0x0002

        Sending Complete

        Bearer Capability i = 0x8090A3

                Standard = CCITT

                Transfer Capability = Speech 

                Transfer Mode = Circuit

                Transfer Rate = 64 kbit/s

        Channel ID i = 0xA9839F

                Exclusive, Channel 31

        Calling Party Number i = 0x0081, '1220'

                Plan:Unknown, Type:Unknown

        Called Party Number i = 0x80, '0665195688'

                Plan:Unknown, Type:Unknown

Apr 24 19:02:00.552: ISDN Se1/0:15 Q931: RX <- CALL_PROC pd = 8  callref = 0x8002

        Channel ID i = 0xA9839F

                Exclusive, Channel 31

++ If so, Telco sent Connect message, and GW sent Connect Ack.

Apr 24 19:02:01.384: ISDN Se1/0:15 Q931: RX <- CONNECT pd = 8  callref = 0x8002

        Connected Number i = 0x0080, '0665195688'

Apr 24 19:02:01.404: ISDN Se1/0:15 Q931: TX -> CONNECT_ACK pd = 8  callref = 0x0002

++ After 12 seconds, we receive Disconnect from the GW with inband information available.

Apr 24 19:02:13.524: ISDN Se1/0:15 Q931: RX <- DISCONNECT pd = 8  callref = 0x8002

        Cause i = 0x8190 - Normal call clearing

        Progress Ind i = 0x8188 - In-band info or appropriate now available

++ SO telco is releasing the call and playing fast busy or reorder tone. They need to tell us why?

Cisco Employee

Re: MGCP gateway can't make outbound calls

++ And they didnt sent an Alering message, which tells me,  that  they were not able to route the call and ring the far end.

++ Check with them what is wrong in the setup message , Are they unhappy with the called/calling number plan and type ?

++ They should be able to tell us why, then if needed we can tweak the configuration in CCM.

New Member

Re: MGCP gateway can't make outbound calls

Hi

Thank you for your reponse, I would just remember that I can call from the old CallManager with the same gateway.

External phone number mask can play a role here?

Cisco Employee

Re: MGCP gateway can't make outbound calls

HI,

Do you  still have that setup, if so can you collect the logs there or can you compare the configuration ? If nothing available Speaking to telco folks will be quick than guessing games.

Murali

Bronze

MGCP gateway can't make outbound calls

I ran in to a similar issue when upgrading from 7.1.3 to 8.6.2. Never did find out what actually caused this but TAC's best guess was something missing in database after upgrade. The piece that stopped the call for us was "Calling Party Number i = 0x0081, '1220' " in the debug. The telco doesn't recognize the calling party and blocked the call. We had to delete the gateway and reconfigure it.

New Member

Re: MGCP gateway can't make outbound calls

HI

OK, I'll try to do that, currently the gateway is in production and its connected to the old CallManager, I have to wait an hour or two after the exit of staff.

New Member

Re: MGCP gateway can't make outbound calls

Hi

Thanks to all, the problem is resolved by changing Calling Party Transform Mask value in the route list.

Thank you for your support.

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