-- Executing Dial("SIP/9896851099-8ce5", "Zap/g1/9895072453") in new stack
    -- Requested transfer capability: 0x00 - SPEECH
    -- Called g1/9895072453
    -- Zap/1-1 is proceeding passing it to SIP/9896851099-8ce5
    -- PROGRESS with cause code 31 received
    -- Zap/1-1 is making progress passing it to SIP/9896851099-8ce5