Re: (ASCEND) NFAS?

[Kevin Smith <kevin@ascend.com>]

At 01:59 PM 12/16/97 -0800, Peter Lalor wrote:
>I recall a discussion taking place here a while back about the pros and
>cons of NFAS, backup D channels, etc., and I wanted to solicit some further
>input on it.
>
>I need to put two PRIs into a TNT in a hunt group. The plan is to keep
>adding PRIs to this hunt group in future, so I need to keep that in mind.
>I'm not decided whether to do NFAS or not, and if so, whether to do
>
>Primary D + 23 B
>Secondary D + 23 B
>
>for no net gain in B channels (as someone pointed out earlier), or whether
>to do
>
>1D + 23 B
>24 B
>
>Or I could just do
>
>1D + 23 B
>1D + 23 B
>
>forever...
>
>Any thoughts?

Costs for D-channel/B-channel ratios ? Telco would have to
give you that information.

With the 1-D controlling many 24B, you do chance the disaster
scenario where losing that physical line would kill signaling for
the entire group....BUT how often has that happened to anyone ?

Maybe Primary-D, secondary-D and then a bunch of 24B - if the telco
and/or switch support it ? (I believe the TNT can, I'll check that
too though).


Kevin


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References:

• (ASCEND) NFAS?
• From: Peter Lalor <plalor@infoasis.com>

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