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New Member

MGCP gateway with E1 (ISDN30)

We are having a bit of trouble getting the above configuration working. The teloc provider isn't helping much, do we need to setup an E&M, FXS or FXO service. The only thing the telco says is NO CRC4 (done) and we need to install as a slave to their master under ISDN but when installing MGCP this option isn't available.

New Member

Re: MGCP gateway with E1 (ISDN30)

Are you working with Callmanager?

here is the configuration it works in my network:


mgcp call-agent service-type mgcp version 0.1

mgcp dtmf-relay voip codec all mode out-of-band

isdn switch-type primary-net5


controller E1 1/0

pri-group timeslots 1-31 service mgcp


interface Serial1/0:15

no ip address

no logging event link-status

isdn switch-type primary-net5

isdn incoming-voice voice

isdn T310 120000

isdn bind-l3 ccm-manager >>> for working with CCM

no cdp enable

Do you know the switch-type you should configure?

the default of the user/network side is user, you can see it

"isdn protocol-emulate ? "

hope it helps...

New Member

Re: MGCP gateway with E1 (ISDN30)

I have a primary-net5 type switch, I do use CCM have configured as you suggested, but am unable to complete the following

pri-group timeslots 1-31 service mgcp

the only option I have after 1-31 is nfas_d

The system I am setting up it a ICS 7750 which has a MPR200 router controller e1 is in slot 0/0

I also cannot bind the isdn to the ccm manager as you do I am running version 12.2

New Member

Re: MGCP gateway with E1 (ISDN30)

I would try to check the ios issue... probably not support mgcp,

and also try to set no-crc4, i had some cases where the PSTn ask for no_crc but eventually i had to set with crc.


New Member

Re: MGCP gateway with E1 (ISDN30)

I can work it out from here with just one bit of assitance when you type in the show voice port command what type of line signals do you get, I presume you are connected to a telco, in the uk, or is the switch connected to a PABX.


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