MGCP registration issue without DNS server !

Answered Question
May 10th, 2008

hi all ,

i have at lab CUCM 5.1 and 2821 router iOS 14.4. i tried to register the gateway ob CCM. i dont use domain name becuase we dont have dns server. so in simple i gave hostname to the gateway "voice2" and its exactly match the device domain name configured in CCM "voice2".

the problem , see below the config. CCM address 172.16.10 , 2821 gateway address 172.16.1.15

!

ccm-manager mgcp

ccm-manager music-on-hold

ccm-manager config server 172.16.1.10

ccm-manager config

!

mgcp

mgcp call-agent 172.16.1.10 2427 service-type mgcp version 0.1

mgcp rtp unreachable timeout 1000 action notify

mgcp modem passthrough voip mode nse

mgcp package-capability rtp-package

mgcp package-capability sst-package

mgcp package-capability pre-package

no mgcp package-capability res-package

no mgcp package-capability fxr-package

no mgcp timer receive-rtcp

--More--

when i do show ccm-manager

voice2#show ccm-manager

MGCP Domain Name: voice2

Priority Status Host

============================================================

Primary Registering with CM 172.16.1.10

First Backup None

Second Backup None

Current active Call Manager: None

Backhaul/Redundant link port: 2428

Failover Interval: 30 seconds

Keepalive Interval: 15 seconds

Last keepalive sent: 09:57:17 UTC May 10 2008 (elapsed time: 00:24:49)

Last MGCP traffic time: 10:21:55 UTC May 10 2008 (elapsed time: 00:00:11)

Last failover time: None

Last switchback time: None

Switchback mode: Graceful

MGCP Fallback mode: Not Selected

Last MGCP Fallback start time: None

Last MGCP Fallback end time: None

MGCP Download Tones: Disabled

TFTP retry count to shut Ports: 2 MGCP call-agent: 172.16.1.10 2427 Initial protocol service is MGCP 0.1

MGCP validate call-agent source-ipaddr DISABLED

MGCP validate domain name DISABLED

MGCP block-newcalls DISABLED

MGCP send SGCP RSIP: forced/restart/graceful/disconnected DISABLED

MGCP quarantine mode discard/step

MGCP quarantine of persistent events is ENABLED

MGCP dtmf-relay for VoIP is SDP controlled

MGCP dtmf-relay for voAAL2 is SDP controlled

MGCP voip modem passthrough mode: NSE, codec: g711ulaw, redundancy: DISABLED,

MGCP voaal2 modem passthrough disabled

MGCP voip modem relay: Disabled.

MGCP T.38 Named Signalling Event (NSE) response timer: 200

MGCP Network (IP/AAL2) Continuity Test timer: 200

MGCP 'RTP stream loss' timer disabled

MGCP request timeout 500

MGCP maximum exponential request timeout 4000

MGCP rtp unreachable timeout 1000 action notify

MGCP gateway port: 2427, MGCP maximum waiting delay 3000

MGCP restart delay 0, MGCP vad DISABLED

MGCP rtrcac DISABLED

MGCP system resource check DISABLED

--More--

Correct Answer by Jaime Valencia about 8 years 9 months ago

Cisco IOS MGCP and Related Protocols Configuration Guide

http://www.cisco.com/en/US/docs/ios/12_3/vvf_c/cisco_ios_mgcp_and_related_protocols_configuration_guide/xgcp_c.html

i'd advise you to read the gateways and gatekeepers book from the CCVP path for a better understanding

the only things that change between a T1 and a E1 are the timeslots, instead of 1-24 it's 1-31 and the voice port is not 0:23 but 0:15

this will get you thru most of it:

MGCP IOS Gateway (San Jose) Interactive Voice Network Configuration Example

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a00807f8b61.shtml

Configuring MGCP and Related Protocols

http://www.cisco.com/en/US/docs/ios/12_2/voice/configuration/guide/vvfmgcp.html

HTH

javalenc

if this helps, please rate

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Overall Rating: 5 (2 ratings)
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mattcalderon Sat, 05/10/2008 - 05:28

do you happen to have ssh configured? If so, ssh configuration requires a domain name. Verify that "ip domain-name" is not configured on the gateway.

MC

t-alkhalidi Sat, 05/10/2008 - 06:58

i managed now to register the gateway, but the eendpoint E1 not registired. do i have to do card tyoe to define controller. where is that its not there in docs. just one of the guys here helped me to do so. there is no full document tell u the sequence u should follow to administer E1 PRI on mGCP gateway. for example there is nothing about card type to enable controller command. what about also to configure DSP resources for the E1 channels. i have pVDM_32 what configuration should do on voice card to enable DSP for the PRI line?!.you can find docs to tell u how to configure specefic E1 configutation. but its not organized along with what u need to do on CCM. what is PRI group? and what is PRI slots. as far as i know E1 channels from 1-31 , channels 16 is D-channels , i dont know i hope i could find docs from a to z to configure or what i should first then later to configure ISDN PRI E1 with cisco call manager

Correct Answer
Jaime Valencia Sat, 05/10/2008 - 11:18

Cisco IOS MGCP and Related Protocols Configuration Guide

http://www.cisco.com/en/US/docs/ios/12_3/vvf_c/cisco_ios_mgcp_and_related_protocols_configuration_guide/xgcp_c.html

i'd advise you to read the gateways and gatekeepers book from the CCVP path for a better understanding

the only things that change between a T1 and a E1 are the timeslots, instead of 1-24 it's 1-31 and the voice port is not 0:23 but 0:15

this will get you thru most of it:

MGCP IOS Gateway (San Jose) Interactive Voice Network Configuration Example

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a00807f8b61.shtml

Configuring MGCP and Related Protocols

http://www.cisco.com/en/US/docs/ios/12_2/voice/configuration/guide/vvfmgcp.html

HTH

javalenc

if this helps, please rate

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