I have what my SBC/ATT representative calls a "Supertrunk," but he can't tell me the specifics I need to know to configure Asterisk to work with it.

By fiddling about, I've come up with the "almost working" configuration below. This works except that it takes about 4 seconds from when the console says the line is answered until it plays my prompt.

Watching the card with zttool, all flags start at 0. Then RxA, RxB,
TxA, TxB, TxC, TxD change to 1. Then, a split second later, TxA, TxB, TxC, and TxD change to 0. A couple of seconds later, TxA, TxB, TxC, TxD change to 1 and the call progresses. What does this mean? Can you identify the proper configuration from this "handshake?"

Verbosity is at least 99
    -- Starting simple switch on 'Zap/1-1'
(nothing happens for 4 seconds)
    -- Executing NoOp("Zap/1-1", "block-ani:xxxxxxx:1") in new stack
    -- Executing Answer("Zap/1-1", "") in new stack

show dialplan block-ani
[ Context 'block-ani' created by 'pbx_config' ]
  'h' =>            1. deadagi(update-channel-status|--onhook)    [pbx_config]
                    2. hangup()                                   [pbx_config]
  'i' =>            1. hangup()                                   [pbx_config]
  's' =>            1. noop(${CONTEXT}:${EXTEN}:${PRIORITY})      [pbx_config]
                    2. goto(block-ani|xxxxxxxxxx|1)               [pbx_config]
  't' =>            1. hangup()                                   [pbx_config]
  '_x.' =>          1. noop(${CONTEXT}:${EXTEN}:${PRIORITY})      [pbx_config]
                    2. answer()                                   [pbx_config]

/etc/zaptel.conf
defaultzone                             = us
e&m                                     = 1-24
loadzone                                = us
span                                    = 1,0,0,d4,b8zs
# (end of /etc/zaptel.conf)

/etc/asterisk/zapata.conf
[channels]
        callgroup                       = 1
        callreturn                      = no
        callwaiting                     = no
        callwaitingcallerid             = no
        cancallforward                  = no
        context                         = block-ani
        echocancel                      = 128
        echocancelwhenbridged           = yes
        echotraining                    = 800
        faxdetect                       = no
        group                           = 1
        hidecallerid                    = no
        immediate                       = no
        language                        = en
        pickupgroup                     = 1
        resetinterval                   = never
        rxgain                          = 0.0
        rxwink                          = 300
        signalling                      = em_w
        threewaycalling                 = no
        transfer                        = no
        txgain                          = 0.0
        usecallerid                     = no
        usecallingpres                  = no
        usedistinctiveringdetection     = no
        channel                         = 1-24
; (end of /etc/asterisk/zapata.conf)

Thanks in advance,
------------------------------------------------------------------------
Steve Edwards      [EMAIL PROTECTED]      Voice: +1-760-468-3867 PST
Newline                                             Fax: +1-760-731-3000
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