[Asterisk-Users] registering in sipphone

[Randy Bush]

for inbound calls, i can register

    context = from-sipphone
    register => 1747xxxxxxx:passwd at proxy01.sipphone.com

but how do i configure to make outbound calls to them?

    exten => _1747XXXXXXX,1,GoTo(dial-sipphone,${EXTEN},1)
    ....
    [dial-sipphone]
    ;
    ; SIP to sipphone.com
    ;
    exten => _X.,1,Dial(SIP/${EXTEN}@??????)
                                     ^^^^^^
    exten => _X.,2,Playtones(congestion)
    exten => _X.,102,Playtones(busy)
    exten => h,1,Hangup

randy