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Configuring E1 voice circuit in Mexico. Using MGCP

Just installed 3845 with E1 voice circuit (VWIC2-1MFT-T1/E1) in Mexico. Using a single cluster centralized design. We have got a problem to pass calls to and from my telephone service provider. The e1 is registered in CCM as a voice gateway using MGCP.

We were told the E1 voice circuit detail as below.

Framing is NO-CRC4, Line Code is HDB3, Clock Source is Line

If someone has been successfully configured E1 with MGCP Mexico, appreciate can show us a list of parameters for this type of gateway setup (3845 with VWIC2-1MFT-T1/E1 running MGCP) in CCM.

Thanks in advance.

Wilber Jimenez

Mexico

4 REPLIES
Green

Re: Configuring E1 voice circuit in Mexico. Using MGCP

Hello Wilber,

I have worked with mexican customers and normally they use E1 R2 for either Telmex or Telnor.

Since u r using E1 with MGCP let me know the PSTN protocol u r using to interface with your Telco (Telmex,Avantel, Axtel whatever)

If you are using E1 R2, H323 is a must.

//G

New Member

Re: Configuring E1 voice circuit in Mexico. Using MGCP

Hello

Thanks for answer.

i am using E1 R2 modified and my telco is telmex.

Here are the commands used

controller E1 4/0

framing NO-CRC4

line-termination 75-ohm

ds0-group 0 timeslots 1-15,17-31 type r2-digital r2-compelled

cas-custom 0

country telmex

category 2

answer-signal group-b 1

In the CCM do i need some special configuration?

Why do i need h323, is not possible with MGCP?

Thanks a lot

Regards

Wilber

Green

Re: Configuring E1 voice circuit in Mexico. Using MGCP

Because MGCP is not capable to translate E1R2 states from GW to CCM, like it does with ET1PRI|T1CAS|FXO|FXS

The RFC 2705 doesnt have yet a definition for R2.

Actually H323 do support call preservation now.

New Member

Is this still not supported

Is this still not supported or is there any workaround using MGCP now?

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