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New Member

No Ringback on VG200 MGCP Gateway Thru PBX

I have a VG200 running MGCP that is connected to a PBX thru a T1 trunk. Calls can be placed and received correctly. However, when calls are placed from outside the PBX to an IP Phone thru the VG200, the caller does not hear the phone ring. We do not get ringback (and I would also say no progess indicators, such as busy signals are heard either). When the user on the other end picks up, the conversation functions fine. The VG200 is configured with an NM-HDV and a VWIC-1MFT-T1, and is running 12.2.15.T. CallManager is running 3.22c with all the latest patches. The T1 trunk is configured as E&M wink start using all 24 channels. What am I missing?

Thanks!!!

Adam

8 REPLIES
New Member

Re: No Ringback on VG200 MGCP Gateway Thru PBX

Go ahead and post your config and I will take a look at it. I assume that you already have 'voice rtp send-recv' in your config. Also, you might take a look at the following info on CCO if you haven't already done so...

http://www.cisco.com/en/US/partner/tech/tk652/tk701/technologies_tech_note09186a0080094c33.shtml#progresstones

Pat

New Member

Re: No Ringback on VG200 MGCP Gateway Thru PBX

Pat,

Thanks much for your input. The document you refered to is more related to H323 than MGCP. I did try the various voice commands in the document but they did not solve the problem. Since I am using MGCP I cannot add the progress indicators to the dial-peers. Anyway, I have enclosed a copy of the config to look at.

Thanks!!!

Adam

wr t

Building configuration...

Current configuration : 2892 bytes

!

version 12.2

no service pad

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname Hardway-VG200-01

!

logging queue-limit 100

logging buffered 4096 debugging

enable password xxxx

!

voice-card 1

!

ip subnet-zero

ip tcp synwait-time 13

!

!

!

!

!

!

!

!

!

no voice hpi capture buffer

no voice hpi capture destination

!

!

mta receive maximum-recipients 0

ccm-manager redundant-host 172.16.168.15

ccm-manager mgcp

ccm-manager music-on-hold

ccm-manager config server 172.16.103.15

ccm-manager config

!

!

controller T1 1/0

framing esf

linecode b8zs

cablelength short 133

ds0-group 1 timeslots 1-24 type e&m-wink-start

!

interface FastEthernet0/0

ip address 172.16.103.2 255.255.255.0

speed 100

full-duplex

!

ip default-gateway 172.16.103.1

ip classless

ip route 0.0.0.0 0.0.0.0 172.16.103.1

no ip http server

!

!

call rsvp-sync

!

voice-port 1/0:1

echo-cancel coverage 24

!

mgcp

mgcp call-agent 172.16.103.15 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 package-capability rtp-package

no mgcp package-capability res-package

mgcp package-capability sst-package

no mgcp timer receive-rtcp

mgcp sdp simple

mgcp fax t38 inhibit

mgcp rtp payload-type g726r16 static

!

mgcp profile default

!

!

!

dial-peer voice 999101 pots

application mgcpapp

port 1/0:1

!

banner motd ^C

**************************************************************************

WARNING: This system is for the use of authorized clients only.

Individuals using the computer network system without

authorization, or in excess of their authorization, are

subject to having all their activity on this computer

network system monitored and recorded by system

personnel. To protect the computer network system from

unauthorized use and to ensure the computer network system

is functioning properly, system administrators monitor this

system. Anyone using this computer network system

expressly consents to such monitoring and is advised that

if such monitoring reveals possible conduct of criminal

activity, system personnel may provide the evidence of

such activity to law enforcement officers.

Access is restricted to authorized users only.

Unauthorized access is a violation of state and federal,

civil and criminal laws.

Fairmont State College (Hardway VG200 PSTN Gateway)

****************************************************************************

^C

!

line con 0

password xxxx

login

line aux 0

password xxxx

login

modem InOut

transport input all

line vty 0 4

password xxxx

login

!

end

Hardway-VG200-01#

New Member

Re: No Ringback on VG200 MGCP Gateway Thru PBX

Try this under your POTS peer on your gateway..

progress_ind alert enable 8

Should work.

-Faisal

New Member

Re: No Ringback on VG200 MGCP Gateway Thru PBX

Hi Adam,

Which specific 3.2.2 service pack are you running?

The progress_ind commands will not apply since this is MGCP. There's the concept of MGCP events and signals that are involved here. To get a closer look of the problem, capture the output of debug mgcp packets when recreating the problem.

Regards,

Michael.

New Member

Re: No Ringback on VG200 MGCP Gateway Thru PBX

We are running 3.22c with SP-F, and Win2k SP3-SPI. If I debug VPM and VTSP I can see ring tone passed to the PBX, so it would appear that the PBX is not passing the ring tone to the PSTN, although he passes it to PBX callers (internal calls).

Thanks!!!

Adam

New Member

Re: No Ringback on VG200 MGCP Gateway Thru PBX

have you checked the network locals for the gateway? i had identical symptoms with a ws-x6608, were the correct locales hadn't been installed. this can be easily verified by checking the tftp server logs for errors.

good luck

john

New Member

Re: No Ringback on VG200 MGCP Gateway Thru PBX

Locales are set for United States. If I debug VPM and VTSP I can see that the VG200 is passing ring tone to the PBX trunk link. At this point it would appear that the PBX is not passing the ring tone to the PSTN (he does pass it to PBX callers). I will be working with Avaya on the PBX tomorrow. Hopefully we can come up with something.

Thanks!!!

Adam

New Member

Re: No Ringback on VG200 MGCP Gateway Thru PBX

I can not rember for sure since it haas been a while since I was on 3.2 but I did have a vg200 connected to a avaya pbx. under the gateway configuration on the callmanger there is a check box that says some thing like Setup non-ISDN Progress Indicator IE Enable check this box.

hope that helps.

scott

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