[Asterisk-Users] Channalized T1 and PRI with Asterisk

[Ben Brown]

So the only difference with PRI is caller ID? What I am trying to 
determine is if the PRI has enough advantages to give up the voice 
channel used by the D channel. For what I am doing, caller ID is not 
necessarily that important for my application.

Is a non-PRI T1 significantly harder to configure with Asterisk?

Can Asterisk choose the context based upon the CallerID with a PRI?

Thanks for your reply

BEN

Michael D Schelin wrote:

> 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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