[cisco-voip] PRI and a half

[Ted Nugent]

If you're using FAS (NOT NFAS) and you have 2 distinct D Channels then your
best bet is to configure the gateway as H323 and just configure your pri
group with the selected channels. If for whatever reason you need or want to
use MGCP you can configure a fractional PRI but you must remove the
ccm-manager config command from the gateway or when you reset the gateway it
will rewrite your pri-group to use all 23 B-channels. However as Wes
mentioned a few days ago any changes to RP/RG pointing directly to the PRI
will not take affect until you manually bounce MGCP.

My experience with the MGCP b-chan maintenance service parameters in CM to
busy out channels ONLY take affect on 6608 T1 blades and not on an MGCP
controlled IOS device.

Also keep in mind that MGCP with a frac PRI is not officially supported by
Cisco



controller T1 0/0

 framing esf

 linecode b8zs

 pri-group timeslots 1-6,24 service mgcp




On 9/11/07, Wes Sisk <wsisk at cisco.com> wrote:
>
> Hi Paul,
>
> Agreed.  Perhaps my sentence fragment was not clear.  Apologies for any
> confusion.
>
> NFAS = d-ch of 1 physical T1 ckt is used to manage b-ch spread across
> multiple t1 ckts.
>
> /Wes
>
> Paul Choi wrote:
>
> Wes,
>
> I thought NFAS was merely to share one delta channel
> per multiple PRI lines... <?>
>
> Paul
>
> --- Wes Sisk <wsisk at cisco.com> <wsisk at cisco.com> wrote:
>
>
> ---------------------------------
>   Cisco IOS ISDN stack feature called NFAS.  Not
> available in CM withMGCP backhaul.
>
> /Wes
>
> Scott Voll wrote:  I'm helping out with a VoIP
> install.
>
>   They currently have a PRI + half of a second PRI.
> I'm runningCM 5.1.2 and MGCP to the gateway.  How do I
> configure the 1/2 of a PRIcircuit?
>
>   Thanks
>
>   Scott
>
>
> ---------------------------------
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