H.323 and MGCP gateway

Dears,
Greetings , i asked if can deploy H.323 protocol and MGCP protocol in the same gateway using AS5350XM or AS5400XM Voice gateways and 1 TFTP server and 5 call managers 7.1 .
Regards.

Thanks Paolo , the customer request to deploye H.323 for PSTN Line and MGCP for FXO "tellular" connection , i dont know order new VGateway or if it available to reduce tender cost deploye both protocols in the same gateway .
thank you for your response

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MGCP Gateways and Cisco Fax

We are considering adding a fax solution to our IPT infrastructure using Cisco Fax (Captaris RightFax). Ideally we would like the same voice gateways to terminate the fax calls (internal voice calls use QSIG and external calls use Q.931). Can this be achieved with MGCP-controlled Voice gateways? Can T.38 fax be configured with an MGCP gateway. I have seen examples where H.323 dial-peers are required to talk SIP to the Fax Server.
If not, is an alternative to use a back-to-back PRI connection between a voice gateway port and the Fax Server ISDN card, with appropriate route patterns in CallManager to route the fax calls to Fax Server, using Cisco Fax Relay?

with cm 4.2.3 there is mgcp t.38 support implemented.
see release notes cm 4.2.3
http://www.cisco.com/application/pdf/en/us/guest/products/ps6729/c1178/ccmigration_09186a0080724724.pdf
regards
mehmet

Gatekeeperfor VC, H.323/H.320 Gateway, IPVC and QoS

Hi.
Any one, with some general configurations for gatekeeper CAC, for Videoconferencing, as well H.323 / H.320 gateway, and LAN QoS
Highly appreciated.

Hi Roland,
I'm tring to setup a H.320 to H.323 connection between Sony Endpoint and Cisco CUCM infrastructure following the guide provided by Cisco:
http://www.cisco.com/en/US/partner/tech/tk1077/technologies_configuration_example09186a00807ca099.shtml
but I have only voice communications.
Could you send me your VoiceGateway and Gatekeeper configuration?
This is my router configuration:
interface Serial0/1/0:15
no ip address
encapsulation hdlc
no logging event link-status
isdn switch-type primary-net5
isdn overlap-receiving T302 5000
isdn map address .* plan isdn type unknown
isdn send-alerting
isdn negotiate-bchan resend-setup cause-code 34 44
isdn disconnect-cause busy
isdn bchan-number-order ascending
isdn sending-complete
isdn integrate calltype all
no fair-queue
no cdp enable
dial-peer voice 100 pots
information-type video
voice-class called-number inbound 1
voice-class called-number outbound 1
incoming called-number xxxx
bandwidth maximum 384 minimum 384
direct-inward-dial
port 0/1/0:15
dial-peer voice 101 voip
destination-pattern 497
video codec h263+
rtp payload-type cisco-codec-video-h263+ 110
voice-class h323 2
session target ras
codec g711ulaw
no vad
num-exp xxxx 497
Thanks in advance.
Regards,
Stefano

CUCM 9 & AS5850, Using MGCP Gateways not found in "Gateway Type" list...

I have an application where I need to control a large, AS5850 gateway using MGCP. CUCM version is 9.1, soon to be 10.0. The gateway is populated with CT3 cards.
We have confirmed that the AS5850 does in fact support MGCP, however it is not listed as an option in the list of gateway product choices when adding a new gateway in CUCM. So my first question:
1) How do you add an MGCP gateway in CUCM when it is not listed in the "gateway type" drop-down list? It seems there must be a way to do this. Other well known gateways such as the AS5300, AS5400 etc.. are also notably absent from the list of gateway choices. Perhaps there is a template that can be edited?
If anyone has experience utilizing an AS5850 gateway with CUCM & MGCP, it would be very useful to see sample configuration programming from your gateway.
Many thanks

Hi,
As per the datasheet, the Cisco AS5850 Universal Gateway supports H.323, SIP, and MGCP call-control protocols with extensive SNMP management and debugging capabilities. It works with the Cisco PGW 2200 Softswitch, the Cisco BTS 10200 Softswitch, and many partner softswitches as well.
http://www.cisco.com/en/US/prod/collateral/iad/ps509/ps512/product_data_sheet09186a008007cc48.html
It looks like that its not supported with CUCM.
HTH
Manish

Cannot register MGCP gateway to CCM 4.1

Hello,
   I am running an application which simulates a MGCP gateway vs. a real CCM 4.1. I am not able to register the endpoints as you can see from the snapshot attached. I guess the problems lies in the 200 response to the following AUEP:
AUEP 89 AALN/S0/SU0/[email protected] MGCP 0.1
F: X+SRTP/A
200 89 OK
X: 2
L: p:20, a:PCMU, b:64, e:ON, s:ON
    I have also attached the trace file and CCM logs.
   I have 2 questions on this matter:
what is the correct format of the 200 message which needs to be sent to AUEP with SRTP?
how can I configure CCM not to sent this AUEP with SRTP(I have a similar one in my setup which is not sending this AUEP)?
Thanks in advanced for you support,
Ionut

Restrictions for Cisco Multiservice IP-to-IP Gateway Configuration:
Restrictions for SIP-to-SIP Call Signaling:
Transcoding is not supported.
SIP-to-H.323 Call-Signaling Features:
Codec transcoding (G.711-G.729) - supported
other:Transcoding is not supported on the Cisco 7200 and the Cisco 7301
copied from:cisco Multiservice IP-to-IP Gateway
http://www.cisco.com/en/US/products/sw/voicesw/ps5640/products_configuration_guide_book09186a0080409b6d.html
I have not found a solution, but i'd be interested in what you find though.

SRST with T1 CAS MGCP Gateway

Hello - we are trying to configure SRST on our T1 CAS MGCP gateway. We have been informed by a Cisco engineer that we cannot use SRST on a T1 CAS MGCP gateway and that the gateway must first be reconfigured as an H.323 gateway in order to implement SRST. Router is version 12.2(15)T14 and CCM 4.1 Any comments would be truly appreciated...thank you.

SRST doesn't support MGCP but does support MGCP to H.323 failback. You can still configure your router/CCM with MGCP then use the fallback commands for MGCP.
Looking at the SRST 4.0 system guide, page 42, T1 CAS is supported. With your version of IOS you would be running SRST 2.1, this is also supported.
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122t/122t15/srst21/srstv21.pdf
http://www.cisco.com/univercd/cc/td/doc/product/voice/srst/srst40/srst40ad/s40sa.pdf
The ccm-manager fallback-mgcp command was added in IOS 12.2(11)T so it should be in your version. This is what you would need to do MGCP fallback to your H323 along with the call application alternate default.
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123tcr/123tvr/vrht_c4.htm#wp1061367
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123tcr/123tvr/vrht_c1.htm#wp1670149
I would say it might be possible as I don't see anything saying no. Though remember MGCP fallback to H323 over SRST doesn't have call preservation.
Lastly here is a document on the SRST MGCP/H323 fallback.
http://www.cisco.com/en/US/tech/tk1077/technologies_configuration_example09186a008012ecc6.shtml
Please rate any helpful posts
Thanks
Fred

BRI IN "TEI_ASSIGNED" AND MGCP

Hello,
We have tried to configure a MGCP gateway with BRI link and CCM 4.1.
The particularity of the link is that, when no calls are active, it remains in "TEI_ASSIGNED" state:
ISDN BRI0/1/0 interface
dsl 2, interface ISDN Switchtype = basic-net3
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 2 CCBs = 0
The Free Channel Mask: 0x80000003
Due to this, MGCP configuration is not working - the CCM seems to not be able to send the call to the BRI. On the other hand, if I configure the gateway with H.323 protocol, calls progress normally.
Is there any way in MGCP configuration of forcing MULTIPLE_FRAME_ESTABLISHED in these type of links??? Thanks.

Here is a bug on this.
CSCsc03264 Bug Details
Headline MGCP media bind :INACTIVE after reload when using an interface
Product IOS
Feature Voice Components Duplicate of
Severity 3 Severity help Status Resolved Status help
First Found-in Version 12.3T All affected versions First Fixed-in Version
12.4(6.5)T, 12.4(6.6), 12.3(11)T10, 12.4(2)T04, 12.4(4)T02, 12.3(14)T07,
12.4(03d), 12.4(05b), 12.4(6)T01 Version help
Release Notes
MGCP bind to interface vlan may become inactive after reload.
Workaround: Use a loopback interface in the bind command.
Here is my usage:
interface Loopback0
description ABC Corp IPT
ip address XXX.XXX.XXX.XXX 255.255.255.255 -->IP of this Interface Reachable from Call MGR
h323-gateway voip interface
h323-gateway voip bind srcaddr XXX.XXX.XXX.XXX --> IP of this Interface same as above
interface Serial0/0:23
isdn switch-type primary-ni
isdn incoming-voice voice
isdn bind-l3 ccm-manager
mgcp
mgcp call-agent xxx.xxx.xxx.xxx 2427 service-type mgcp version 0.1
mgcp dtmf-relay voip codec all mode out-of-band
mgcp modem passthrough voip mode nse
no mgcp fax t38 ecm
mgcp bind control source-interface Loopback0
mgcp bind media source-interface Loopback0
mgcp profile default
Refrences
Cisco IOS MGCP with PRI configuration
http://www.cisco.com/en/US/partner/tech/tk652/tk701/technologies_configuration_example09186a00801ad22f.shtml
Interworking of IOS MGCP Gateway and Call Manager
http://www.cisco.com/en/US/partner/products/sw/iosswrel/ps5012/products_feature_guide09186a0080087fd9.html
Configuring SRST and MGCP Fallback
http://www.cisco.com/en/US/partner/tech/tk652/tk701/technologies_tech_note09186a0080144630.shtml
Understanding MGCP Interactions with Cisco CallManager
http://www.cisco.com/en/US/partner/tech/tk652/tk701/technologies_tech_note09186a00801da84e.shtml

Remote C2901 MGCP gateway won't register with CUCM

Hi, all,
We have a central call manager, we are setting up a remote office with a C2901 voice gateway that has a T1 PRI, this gateway is being configured as a H.323 gateway, everything worked fine. Now I want to get SRST working such that when WAN goes down, employees can still make outbound calls and take inbound calls. I followed SRST documentations when configuring CUCM and C2901, I would say the documentations are clear and easy to follow -- only thing is there is no adequate explanation of why those commands need to be there and I can not get SRST to work.
1), First, a basic concept question, why do we need to configure "ccm-manager fallback-mgcp"? or any MGCP related configuration on C2901? how does MGCP play the role in SRST? the router is configured as a simple voice gateway, when WAN is intact, we use H.323 protocol, when WAN goes down, we still don't need MGCP ...
2), Assuming that we needed all those SRST related MGCP configuration, I would expect C2901 to register to call manager, but I could not get this device to register as a MGCP gateway, debug mgcp packets shows:
*Sep 5 16:52:47.571: MGCP Packet sent to 10.128.181.5:2427--->
RSIP 201356931 *@voicegw-remoteoffice.local.domain MGCP 0.1
RM: restart
<---
*Sep 5 16:52:47.631: MGCP Packet received from 10.128.181.5:2427--->
500 201356931
<---
I verified the domain name is exactly the same as the name configured on CUCM, I tried multiple time toggling ip domain name on C2901 also, somehow CUCM does not like RSIP message from C2901, I don't have knowledge to get debug information from CUCM side of why CUCM does not like the MGCP message sent by C2901
3), When the communication is blocked from C2901 to central call manager (by using a simple ACL on C2901's default gateway device), I can still make the inbound call to an IP phone, which means, phones were correctly registered to C2901 when communication to call manager is broken, but I can not make outbound call, phones always get quick busy beeps, test call from C2901 itself (by using "csim start") is fine, which means dial-plan and ISDN/PRI is fine.
I believe we are just doing very very basic configuration and this is a common scenario, what could I do wrong?

You dont need the mgcp related commands if you are using H323. The commands that you need are:
application
global
service alternate default
call-manager-fallback (or) telephony-service and the relevant commands under it.
Also make sure that SRST reference has been added to the DP and the phones reset after the change made. This is what tell the phone to register to the SRST gateway when the WAN is down. The IP specified in the SRST reference should match whats configured under call-manager-fallback.

Executing Csim start on a MGCP gateway

Folks,
Can i use Csim start command on a Mgcp Gateway to ring one of the phones?? i have put in a VOIP dialpeer pointing the dial pattern to the callmanager, but it does not work?
any ideas?
Thanks

Would this harm me in anyway since i have MGCP defined ever where (over 10 gateways running MGCP).
If i just create a H.323 gateway and do not assin it to a route-group or route-pattern, would it be the safest approach?
We want to test the PRI's . Since out route plan has redundancy built into it, we can test the pri's using ip phones, i was hoping that i could do a CSIM start and Test Pri at the gateway level. Any better way to doing it?
also as long at the PRI port on the router is under MGCP control, will it let me use H.323 commands and route call to the PSTN??
Thanks,

ILBC and MGCP/2811/IOS15.1/PVDM2-48

We have CUCM 9.1(1)/Unity Connection 9.1(1) integrated with iLBC codec via SIP trunk from CUCM. Works fine internally.
User's 7965 rings but PSTN hears fast busy upon CFB/CFNA to voicemail. CCM traces show transcoder being invoked (we don't have one setup, I was wanting MGCP gateway to Unity Connection to be iLBC no xcoder by design)
Doesn’t appear that my IOS15-1/2811/MGCP/PVDM2-48 can do iLBC….or do I have something wrong with my mgcp config? Everything else works great but this SIP/iLBC setup.
voice-card 0
dsp service dspfarm
codec complexity flex
controller t1 0/0/0
pri-group timeslots 1-4 service mgcp
interface Serial0/0/0:23
isdn bind-l3 ccm-manager
mgcp codec ilbc
ccm-manager mgcp codec-all
no mgcp
mgcp
debug mgcp packet at gateway I see G711
*May 24 21:50:34.933: MGCP Packet sent to 10.12.5.11:2427--->
200 526 OK
I: 3
v=0
c=IN IP4 10.12.65.254 <<<Gateway IP
m=audio 16948 RTP/AVP 0 100 <<<<shows g711, and no iLBC capability
a=rtpmap:100 X-NSE/8000
a=fmtp:100 192-194
<---

Hi Jason,
You might want to try one of the fixed versions of the following bug
https://tools.cisco.com/bugsearch/bug/CSCtw78163/?reffering_site=dumpcr
Description
Symptom:
iLBC codec on MGCP GW not supported with IOS 15.2(1)T
Conditions:
MGCP GW configuration:
===================
ccm-manager mgcp codec-all
mgcp codec ilbc mode 20 packetization-period 60
CUCM configuration:
=================:
region with iLBC settings created
Workaround:
it works with earlier IOS (15.1(3)T2)
HTH
Manish

Set B Channel ID information to Preferred in MGCP Gateway

Hi All,
We recently had some E1 PRI issues and our Service Provider has asked us to set B Channel ID information to Preferred.
We are using a MGCP Gateway with CUCM 9.1.2
When we enable ISDN debug we could see the Channel ID as Exclusive.
Jul 25 13:02:07.566: ISDN Se0/0/0:15 Q931: TX -> SETUP pd = 8 callref = 0x0043
        Sending Complete
        Bearer Capability i = 0x8090A3
                Standard = CCITT
                Transfer Capability = Speech
                Transfer Mode = Circuit
                Transfer Rate = 64 kbit/s
        Channel ID i = 0xA98381
                Exclusive, Channel 1
I tried to change it to Preferred by configuring the command, "isdn negotiate-bchan" under the serial interface but still debug shows it as Exclusive only.
Let me know whether we can change the B Channel information either in CUCM or MGCP Gateway.

Hi
Can you try the below:-
1- interface x/x/x:15
isdn protocol-emulate network
isdn bchan-number-order ascending
then test again
2-Go to CUCM - gateway and do the below
CHANNEL IE TYPE " TIMESLOTS "
Thanks
please rate all useful information

CUCM 9.1.1 - MGCP gateway won't register to my 2811

Hello
I am trying to add a MGCP gateway on a 2811.
I have configured as per the book, but it is not registering,
here is my Router config:
2811 uptime is 2 hours, 4 minutes
System returned to ROM by power-on
System image file is "flash:c2800nm-adventerprisek9-mz.124-11.XJ4.bin"
Cisco 2811 (revision 53.50) with 509952K/14336K bytes of memory.
Processor board ID FHK1302F0YV
3 FastEthernet interfaces
24 Serial interfaces
1 Channelized T1/PRI port
1 Virtual Private Network (VPN) Module
DRAM configuration is 64 bits wide with parity enabled.
239K bytes of non-volatile configuration memory.
125440K bytes of ATA CompactFlash (Read/Write)
Configuration register is 0x2102
2811#sh run
Building configuration...
Current configuration : 7125 bytes
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
hostname 2811
boot-start-marker
boot-end-marker
card type t1 0 2
enable secret 5 $1$ax07$1yOFpGS1rHGYm873l9n9q/
no aaa new-model
clock timezone PCLAIRE -5
clock summer-time PCLAIRE recurring
network-clock-participate wic 2
network-clock-select 1 T1 0/2/0
ip cef
no ip dhcp use vrf connected
ip domain name homelab.local
multilink bundle-name authenticated
isdn switch-type primary-ni
voice-card 0
dspfarm
dsp services dspfarm
controller T1 0/2/0
framing esf
linecode b8zs
pri-group timeslots 1-24
description Home_PBX
vlan internal allocation policy ascending
interface FastEthernet0/0/0
description To Home Network$ETH-LAN$
ip address 192.168.15.50 255.255.255.0
duplex auto
speed auto
interface Serial0/2/0:23
description Home_PBX
no ip address
encapsulation ppp
isdn switch-type primary-ni
isdn incoming-voice voice
control-plane
voice-port 0/2/0:23
description Home_PBX
ccm-manager mgcp
ccm-manager config server 192.168.15.11 - THIS IS THE SUBSCRIBER , SHOULD IT BE THE PUBLISHER ?
ccm-manager config
mgcp
gateway
timer receive-rtp 1200
Here is what I get:
2811(config)#do sh ccm-manager
MGCP Domain Name: 2811.homelab.local
Priority        Status                   Host
============================================================
Primary         None
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:            09:55:04 PCLAIRE Jan 16 2014 (elapsed time: 02:00:24)
Last MGCP traffic time:         11:34:19 PCLAIRE Jan 16 2014 (elapsed time: 00:21:08)
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
Backhaul/Redundant link is down
Configuration Auto-Download Information
=======================================
No configurations downloaded
Current state: Downloading XML file
Configuration Download statistics:
        Download Attempted             : 1
          Download Successful          : 1
          Download Failed              : 0
        Configuration Attempted        : 0
          Configuration Successful     : 0
          Configuration Failed(Parsing): 0
          Configuration Failed(config) : 0
Last config download command:
FAX mode: cisco
Configuration Error History:
2811(config)#
Any help greatly appreciated
John Bachman

Still same problem, I have erased all that related to mgcp on my router, to start from scratch
2811(config)#controller T1 0/2/0
2811(config-controller)#pri-group timeslots 1-24 service mgcp
Cannot overwrite no serv type with one. Unconfigure existing configuration and reconfigure
2811(config-controller)#
Where is this error coming from ??
Here is what I want to try:
192.168.15.10 - pub
192.168.15.11 - sub
controller T1 0/2/0
pri-group timeslots 1-24 service mgcp
interface Serial0/0/0:23
isdn bind-l3 ccm-manager
ccm-manager config server 192.168.15.10 192.168.15.11
ccm-manager config
ccm-manager redundant-host 192.168.15.11
ccm-manager mgcp
mgcp
mgcp call-agent 192.168.15.10 service-type mgcp version 0.1

H323 as CUBE and SIP Gateway

I have a H.323 gateway. I want to know if I can configure this existing h.323 gateway as a Cube to transport SIP.
If so do I need to bind a seperate interface to SIP and H.323 or the same interface can be used for both
Can the Gateway be registered as h.323 to CCM1 and Can I have a SIP trunk between the same Gateway to CCM2?
Thanks in advance

Hi,
"I have a H.323 gateway. I want to know if I can configure this existing h.323 gateway as a Cube to transport SIP".
A CUBE gateway by definition is a voice gateway that connects ip-2-ip calls and plus some extra fancy features. The gateway can support both h.323 and sip at the same time.
"If so do I need to bind a separate interface to SIP and H.323 or the same interface can be used for both"
This is tricky question, the answer is I don't know but why limit yourself when you can bind them into different loopback interfaces.
"Can the Gateway be registered as h.323 to CCM1 and Can I have a SIP trunk between the same Gateway to CCM2?"
Absolutely.

FAX Detection Application for a MGCP Gateway

Hi,
I have an MGCP Gateway and a Right Fax Solution along with CUCM. Was wondering if FAX detection application can be configured for this setup or is FAX detection only for H323 gateways.
Thanks
Prakash

It uses TCL script, so it is not available with MGCP.
Chris

MGCP Gateway Help

I have a site where they treat the employees, from a finance perspective, as 2 companies. Because of this they was all their calls to go out different BRIs/PRIs so they can just charge each 'company' their share. Last time I visited there I met with a reseller and one of their voice engineers said I could do this by creating 2 different MGCP gateways for the single router. There may have been something I missed in translation (Japanese) but I cannot figure out how to make a second MGCP gateway for this router.
Any ideas?

Create different set of CSS, partitions, route patterns. Assign the new CSS to the other users with access to partitions that new duplicate route patterns are assigned to and point to the dedicated ports on the gateway.
Chris
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H.323 and MGCP gateway

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