[cisco-voip] NFAS without backup D-channel

[Erick]

Not using nfas interface 1 could very well be the problem.  It's been a long time since I configured any nfas groups.

On Jul 12, 2012, at 12:31 PM, "Heim, Dennis" <Dennis.Heim at wwt.com> wrote:

> I found this old Cisco doc (http://www.cisco.com/en/US/tech/tk801/tk379/technologies_configuration_example09186a00800a6bf2.shtml)
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> It states, “Note: In certain scenarios where the NFAS setup does not use a backup D channel, do not use the keyword nfas_interface 1 as it is reserved for the backup D channel. Configure only nfas_interfaces 0, 2, 3, 4 and so on.” We have it configured like you mentioned. I am wondering if having nfas_interface 1 configured would cause everything not to come up since there is no backup D channel. I am not able to test, just trying to make sure I have a solution for the next maint window.
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> Dennis Heim
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> Sr. UC Engineer
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> World Wide Technology
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> Office: 314.212.1814
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> Email: dennis.heim at wwt.com
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> www.wwt.com
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> From: Erick Wellnitz [mailto:ewellnitzvoip at gmail.com] 
> Sent: Thursday, July 12, 2012 1:16 PM
> To: Heim, Dennis
> Cc: cisco-voip at puck.nether.net
> Subject: Re: [cisco-voip] NFAS without backup D-channel
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> I assume you know which PRI has the D channel on it?
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> Assuming 4 PRIs....
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> Primary should look something like:
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> pri-group timeslots 1-24 nfas_d primary nfas_int 0 nfas_group 1 
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> The rest should look something like:
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> pri-group timeslots 1-24 nfas_d none nfas_int 1 nfas_group 1
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>  pri-group timeslots 1-24 nfas_d none nfas_int 2 nfas_group 1 
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>  pri-group timeslots 1-24 nfas_d none nfas_int 3 nfas_group 1 
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> It may be slightly different depending on model and IOS version.
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> On Thu, Jul 12, 2012 at 11:59 AM, Heim, Dennis <Dennis.Heim at wwt.com> wrote:
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> Has anyone worked on NFAS without a backup d-channel. We cannot get the circuit to come up.
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>  
> 
> Dennis Heim
> 
> Sr. UC Engineer
> 
> World Wide Technology
> 
> Office: 314.212.1814
> 
> Email: dennis.heim at wwt.com
> 
> www.wwt.com
> 
>  
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> 
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