[Asterisk-Users] E1/T1 configurations

[Mark McLoughlin]

Hi,
	If you were to lead someone (with a UI) through the process of
configuring a a Digium T1/E1 card with asterisk and a T1/E1 trunk from a
provider, would the following questions cover most scenarios? i.e. given
the following questions and assumptions, would the configurations below
work for most people?

  - Is it a E1 or T1 line (i.e. are you in Europe or America)?

  - If it's a T1 line, is it PRI ISDN or E&M?

  - If it's a T1 does it use Extended Super Frame (ESF/D5) framing or 
    is it Super Frame (SF/D4) framing?

  - If it's an E1, does it use High-density Bipolar-3 (HDB3) or 
    Automatic Mark Inversion (AMI) coding?


	And given the following assumptions:

  - If it's an E1 voice line, it's going to be PRI which implies CCS 
    framing

  - ESF framing on a T1 generally implies B8ZS coding and SF implies 
    AMI coding

  - If it's a T1 PRI, it's most likely a National 2 switch; if it's an 
    E1 PRI, it's EuroISDN

  - 0db LBO in most cases

  - Most E1 lines use a crc

  - Wink start is usually used with E&M signalling


	You'd then have have a set of configurations like:

  - T1, PRI, ESF

      zaptel.conf:

        span=1,1,0,esf,b8zs
        bchan=1-23
        dchan=24

      zapata.conf:

        switchtype=national
        signalling=pri_cpe
        context=incoming
        group=1
        channel=>1-23

  - T1, PRI, SF

      zaptel.conf:

        span=1,1,0,d4,ami
        bchan=1-23
        dchan=24

      zapata.conf:

        switchtype=national
        signalling=pri_cpe
        context=incoming
        group=1
        channel=>1-23

  - E1, PRI, HDB3

      zaptel.conf:

        span=1,1,0,ccs,hdb3,crc4
        bchan=1-15
        dchan=16
        bchan=17-31

      zapata.conf:

        switchtype=euroisdn
        signalling=pri_cpe
        context=incoming
        group=1
        channel=>1-23

  - E1, PRI, AMI

      zaptel.conf:

        span=1,1,0,ccs,ami,crc4
        bchan=1-15
        dchan=16
        bchan=17-31

      zapata.conf:

        switchtype=euroisdn
        signalling=pri_cpe
        context=incoming
        group=1
        channel=>1-23

  - T1, E&M, ESF

      zaptel.conf:

        span=1,1,0,esf,b8zs
        e&m=1-24

      zapata.conf:

        signalling=em_w
        context=incoming
        group=1
        channel=>1-24

  - T1, E&M, SF

      zaptel.conf:

        span=1,1,0,d4,ami
        e&m=1-24

      zapata.conf:

        signalling=em_w
        context=incoming
        group=1
        channel=>1-24

Thanks,
Mark.