Configuration to use only 15 PRI Channels in MGCP.

[Ajeya Shetty]

Hello All,

While configuring the MGCP gateway, I want to use only 15 D Channels. Is it possible to achive this by giving the command "Pri-group 1-15 Service MGCP". I was discussing the same with my collegue and he was telling, this command won't help in the case of MGCP. If that is true what is the use of this command, and what is the best way to configure only 15 channels in MGCP.

Thanks in Advance.

Ajey Shetty

[Aman Soi]

Hi Shetty,

Fractional E1 PRI is not supported on MGCP.

Go for H.323 .

https://supportforums.cisco.com/message/3171422#3171422

regds,

aman

[Suresh Subramanian]

Also check the Busy-out B Channels of MGCP GW, though it is not TAC supported

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_configuration_example09186a008076f8d2.shtml

[Ajeya Shetty]

Suresh,

Thank you for the response.

Can you please tell me what is the use of the command "Pri-group 1-24 Service MGCP". What does it really do ?

Regards,

Ajey Shetty

[Aman Soi · Accepted solution]

Hi Ajey,

You are mapping your 23 B channels and 1D channel in T1 -PRI for MGCP.You can also say channels  like TimeSlots.

B channel is used for Voice while D channel is for Signalling.

regds,

aman

[Roger Kallberg · Accepted solution]

You can do a setup with a fractional PRI with MGCP, you just can't use the download of configuration from the CUCM since that always will be a full blown PRI with 24 (T1) or 30 (E1) channels. For this you would need to manually configure all needed MGCP parts in IOS, leaving out the ccm-manager config command.

Look at this URL for more info, http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a00807f8b70.shtml

Sent from Cisco Technical Support iPhone App

[Ajeya Shetty]

Got it. Thank you so much guys.