[Asterisk-Users] T100P & Phones Configuration

[Don Pobanz]

On Monday, October 13, 2003 7:21 AM, Andrew Kohlsmith 
[SMTP:akohlsmith-asterisk at benshaw.com] wrote:
>
> Also I was talking with James (different James, hahaha) about using a
> T400P
> to take in a PRI from the telco and provide a PRI (or CAS T1) to an
> old
> access server, routing modem calls to the access server by DID. 
 James
> was
> unsure if 56k (v90) speeds could be achieved but his test was a 
little
>
> wonky too, he admitted.
>
> Do you knwo of any limitations/restrictions on doing this?  Obviously
> modem
> calls coming from VOIP would have to use ulaw/alaw but being able to
> get
> v90 and voice with the T400 would be nice, if possible.
>

56k speeds should work fine. Going between 2 PRI will not drop any data 
bits. Going between a PRI and robbed bit signaling T1 will possibly 
change a data bit every sixth frame (.75 m seconds) but this should not 
noticeably effect the performance of a 56K dial up modem. (What really 
effects the performance is adding another A/D conversion.)

Don Pobanz

> Regards,
> Andrew
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