[Asterisk-Users] "Best" line protocol for T1

[Lyle Giese]

A T1 PRI should be B8ZS, ESF.  The protocol can be either 5ESS or NI2(not IN2).  Either will work, primarily both ends need to be setup for the same protocol, but I would go with NI2 as that is a more 'universal' procotol(not switch specific like 5ESS).

Lyle
  ----- Original Message ----- 
  From: Jon Bebeau 
  To: asterisk-users at lists.digium.com 
  Sent: Friday, November 19, 2004 8:22 AM
  Subject: [Asterisk-Users] "Best" line protocol for T1


  Hello all,

  I'm provisioning a T1-PRI for a Digium T410P with my local TELCO.  The TELCO has asked me to pick a line protocol and has the option of several RBS protocols, like 5ESS (Lucent), IN2 and others.  The switch is a 5ESS, but the "normal" (according to the sales rep) protocol is IN2.  I see from the doc on zaptel, that many protocols are supported.  As I have a choice, is one of the PRI protocols "better" that an another?  I suspect that some protocols support features over another but can't find much on the specifics.  Recommendations and reasons please.

  Jon


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