[cisco-voip] UK PRI MGCP

Thu Dec 3 10:36:09 EST 2009

No you have done some tweaks somewhere to make a partial PRI work with MGCP.
It does not work correctly without some changes.

It may be supported by TAC but not supported  by CUCM. J

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Lewis, Chris
Sent: Thursday, December 03, 2009 8:52 AM
To: Charles Goldsmith; Joe Martini (joemar2)
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] UK PRI MGCP

To let you know, I have been using 15 channels on an ISDN30 for over 2 years
- in my UK site - with no additional tweaks on CCM or the VGW's

Plus it is supported by TAC - Spoken to Joe a few times I in the past  J

Chris

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Charles Goldsmith
Sent: 03 December 2009 14:36
To: Joe Martini (joemar2)
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] UK PRI MGCP

Note: Cisco CallManager does not support the configuration or use of a
fractional PRI when you use it with MGCP. If fractional PRI is necessary,
you can use H.323 instead of MGCP.

This can be found on
http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a00806fedb
e.shtml#topic1 

It's not supported and won't work without some tweaking.

Charles

On Thu, Dec 3, 2009 at 8:34 AM, Joe Martini (joemar2) <joemar2 at cisco.com>
wrote:

To do a fractional MGCP T1/E1/PRI you have to configured it as a full PRI on
the gateway.  Then on CUCM check the CallManager service parameter, Change
B-Channel Maintenance Status.

Joe

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Dan Greenway
Sent: Thursday, December 03, 2009 9:25 AM
To: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] UK PRI MGCP

I didn't think you could do MGCP with fractional E1's

thanks

Dan

On 3 Dec 2009, at 07:10, afatsum wrote:

You are missing l3 backhaul binding to ccm-manager under your serial 
interface. Add "isdn bind-l3 ccm-manager" under serial 0/0/0:15

-Mus

Martin Bufton wrote:

I have a Cisco router connected to UK PRI E1 with 10 channels. I 

cannot get it to register.

I get the following MCGP debug message. Can you see anything wrong in 

my config?

000073: *Dec  2 17:55:59.251 GMT: 

//-1/xxxxxxxxxxxx/MGCP/mgcp_mp_get_not_entity(830):[lvl=2]Invalid 

parameter (pkt 0x67654638 pkt->mgcp_parm_lines 0x00000000)

Thanks in advance

Current configuration : 8969 bytes

!

version 12.4

no service pad

service timestamps debug datetime msec localtime show-timezone

service timestamps log datetime msec localtime show-timezone

service password-encryption

service sequence-numbers

!

hostname Cent-xxx-MGCP-GW1-RT

!

boot-start-marker

boot-end-marker

!

card type e1 0 0

logging buffered 51200 warnings

!

no aaa new-model

clock timezone GMT 0

clock summer-time BST recurring last Sun Mar 2:00 last Sun Oct 2:00

network-clock-participate wic 0

dot11 syslog

!

!

ip cef

!

!

no ip bootp server

no ip domain lookup

ip domain name

multilink bundle-name authenticated

!

isdn switch-type primary-net5

voice-card 0

no dspfarm

!

crypto pki trustpoint TP-self-signed-2117350501

enrollment selfsigned

subject-name cn=IOS-Self-Signed-Certificate-2117350501

revocation-check none

rsakeypair TP-self-signed-2117350501

       quit

!

!

archive

log config

 hidekeys

!

!

controller E1 0/0/0

pri-group timeslots 1-10,16 service mgcp

!

controller E1 0/0/1

!

ip tcp synwait-time 10

!

!

!

!

interface Port-channel1

description EtherChannel to Cent-xxx-Core-Sw

ip address 172.16.xx.100 255.255.255.0

!

interface GigabitEthernet0/0

description Member of Etherchannel conected to Cent-xxx-Core-Sw gig 

2/0/19

no ip address

duplex auto

speed auto

media-type rj45

channel-group 1

!

interface GigabitEthernet0/1

description Member of Etherchannel conected to Cent-xx-Core-Sw gig 1/0/19

no ip address

duplex auto

speed auto

media-type rj45

channel-group 1

!

interface Serial0/0/0:15

no ip address

encapsulation hdlc

isdn switch-type primary-net5

isdn incoming-voice voice

no cdp enable

!

ip forward-protocol nd

ip route 0.0.0.0 0.0.0.0 Port-channel1 172.16.xx.1

!

!

ip http server

ip http access-class 23

ip http authentication local

ip http secure-server

ip http timeout-policy idle 60 life 86400 requests 10000

!

control-plane

!

voice-port 0/0/0:15

!

ccm-manager mgcp

!

mgcp

mgcp call-agent 172.16.x.10 service-type mgcp version 1.0

!

mgcp profile default

!

dial-peer voice 1 pots

service mgcp

destination-pattern 9T

incoming called-number ....

direct-inward-dial

!

!

!

scheduler allocate 20000 1000

ntp server 172.16.74.30

!

end

* *

*Martin Bufton BSc (Hons), CCNA - *Systems Engineer**

* *

------------------------------------------------------------------------

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