Analog Voice Gateway 204

[adamgibs7]

Experts

I have configured the analog voice gateway as per the attached file just confirm to me the config are perfect, fax protocol is cisco, if it is recommended to change please advice i have followed below links.

For Voice Gateway configuration

http://www.cisco.com/c/en/us/support/docs/voice-unified-communications/unified-communications-manager-callmanager/42105-vg200-cfg.html

For Call manager MGCP gateway configuration

http://www.cisco.com/c/en/us/support/docs/voice-unified-communications/unified-communications-manager-callmanager/42101-cm-cfg.html#task3

And the below link little bit confusing me for the FAX protocol in section Telco — PRI — GW — MGCP — CUCM — MGCP — VG224 — Fax/Modem

http://www.cisco.com/c/en/us/support/docs/voice-unified-communications/unified-border-element/115742-fax-modem-call-flows-00.html#concept2

Thanks

[adamgibs7]

Experts,

you'll hints are very helpful. please suggest.

thanks

[Kevin Monteiro · Accepted solution]

Hi Adam,

If you are running FAX:

If this is the call flow:

Telco — PRI — GW — MGCP — CUCM — MGCP — VG224 — Fax/Modem

On both the Mgcp gateway make sure  you have Modem passthrough enabled by the commands below:

no ccm-manager fax protocol cisco                             

mgcp modem passthrough voip mode nse

mgcp modem passthrough voip codec g711ulaw

(Bounce the MGCP stack by doing a "no mgcp/mgcp")

voice service pots

fax rate disable

Make sure you have that you have "Modem Passthrough" drop through option on the CUCM/MGCP page enabled and T.38 disabled.

Rate the post accordingly.

Regards,

Kevin

[yahsiel2004]

Good info Kevin (+5)

Regards,

Yosh

[Kevin Monteiro]

Thanks Yosh

[adamgibs7]

Dear Kevin,

Telco — PRI — GW — MGCP — CUCM — MGCP — VG224 — Fax/Modem

instead of VG224 i have VG204

with fax protocol cisco the fax will not work??

what has to be selected for the FXS ports on the CUCM there are 3 option loop start, ground,pots??? what i have to choose

Thanks

[Kevin Monteiro]

Hi Adam,

You can apply the command i mentioned in my earlier post for running modem passthrough.

   Regards,

Kevin

[Kevin Monteiro]

Hi Adam,

You can apply the command i mentioned in my earlier post for running modem passthrough.

Check the snapshot  below:

   Regards,

Kevin

[Kevin Monteiro]

Hi Adam,

Forgot to add this, just make sure you do not have slip on the PRI, this how you would check it:

mf-access#show controller t1 0
    T1 0 is up.
    No alarms detected.
    Version info of slot 0: HW: 2, Firmware: 16, NEAT PLD: 14, NR Bus PLD: 22
    Framing is ESF, Line Code is B8ZS, Clock Source is Internal.
    Data in current interval (850 seconds elapsed):
    0 Line Code Violations, 0 Path Code Violations
    0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
    0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

Regards,

Kevin

[adamgibs7]

Thanks for the reply kevin,

On both the Mgcp gateway make sure  you have Modem passthrough enabled by the commands below: 
no ccm-manager fax protocol cisco                              
mgcp modem passthrough voip mode nse 
mgcp modem passthrough voip codec g711ulaw
(Bounce the MGCP stack by doing a "no mgcp/mgcp")
voice service pots
fax rate disable

The above commands should be executed on analog VG204 and also on the Voice Gateway on which ITSP PRI is terminating.

correct me if  i am wrong.????

Thanks

[Kevin Monteiro]

Hi Adam,

If the PRI is added as MGCP to the CUCM, then yes.

Regards,

Kevin

[adamgibs7]

thanks for the reply

but what click you for the slips,, on applying those modem passthrough commands will generate any slips???  because at current my PRI is stable.