[Asterisk-Users] Channalized T1 and PRI with Asterisk

[Michael D Schelin]

Go T1 with PRI signaling. Farming and line coding is for all T1's.  We 
use ESF (extended super frame) B8ZS ( I forget B8ZS stands for but it's 
a newer line coding) . If you have it avaible to you, Signaling type 
should be PRI.  The rest of your numbers 4-7 are in the PRI signaling. 
No sound differences in digital. Caller ID is very important. PRI 
signaling is very easy to set up with Asterisk.  

Ben Brown wrote:

> Preparing to order a T1 (not PRI) for our asterisk box. The telco has 
> offered me several options that I am not sure of. Which would be best 
> for use with asterisk? The box has the Digium card in it, BTW.
>
> 1. Dial Tone - No, Yes - Precise, Yes - SCC
> 2. Framing - SF, ESF
> 3. Line Coding - AMI, B8ZS
> 4. Signaling Type - Ground Start, E&M, Loop Start w/Ring, Loop Start 
> w/o Ring
> 5. Pulse Mode - DTMF, MF
> 6. Outpulse Start - Wink, Immediate, Seizure
> 7. If Seizure then - Origination, Digit Collection.
>
>
> On a related note, am I correct that the only major differences with a 
> PRI are faster call setup time and the caller ID information on the D 
> channel? Are there any significant differences in sound quality with a 
> PRI? Any other advantages to giving up the extra channel seeing as the 
> cller ID is not really a selling point for me?
>
> Thanks
>
> BEN
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