[cisco-voip] UK PRI MGCP

Thu Mar 19 11:13:40 EDT 2015

SIP gateways is where it is. You probably have SRST running so you had to build dial-peers anyway. The better your dial-plan is /the better you use normalization/transformation the easier your dial-peers will be.

MGCP has always was finicky. The only real use case today for MGCP, is to solve layer 8 management/access control issues where the collab guys don’t have access to the console of the routers.

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From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of ??
Sent: Thursday, March 19, 2015 7:11 AM
To: Sreekanth Narayanan
Cc: cisco-voip (cisco-voip at puck.nether.net); VoiceNoob
Subject: Re: [cisco-voip] UK PRI MGCP

I'm using 9.1 . Do this means that cisco have limited support for partial ISDN for MGCP?
Regards,
Kin Wai

On Thu, Mar 19, 2015 at 5:33 PM, Sreekanth Narayanan <sknth.n at gmail.com<mailto:sknth.n at gmail.com>> wrote:
What's the CUCM version that you're using today?
I checked CUCM version 10.5.2 and it still has the B Channel maintenance fields. But yes, there are only 5 fields for this.

On 18 March 2015 at 10:26, 秀王 <kiwi.voice at gmail.com<mailto:kiwi.voice at gmail.com>> wrote:
Sorry to dig a very old thread.
Is this method support today? Is it still limited to like maximum 5 field where we can put them into maintenance mode?

On Thu, Dec 3, 2009 at 11:36 PM, VoiceNoob <voicenoob at gmail.com<mailto:voicenoob at gmail.com>> wrote:
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. ☺

From: cisco-voip-bounces at puck.nether.net<mailto:cisco-voip-bounces at puck.nether.net> [mailto: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<mailto: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  ☺

Chris

From: cisco-voip-bounces at puck.nether.net<mailto:cisco-voip-bounces at puck.nether.net> [mailto: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<mailto: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_note09186a00806fedbe.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<mailto: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> [mailto: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<mailto: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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