-- Starting simple switch on 'Zap/4-1'
    -- Executing [1877*******@from-internal:1] Dial("Zap/4-1", "ZAP/1/1877*******|300|TW") in new stack
    -- Called 1/1877*******
    -- Zap/1-1 answered Zap/4-1
    -- Hungup 'Zap/1-1'
  == Spawn extension (from-internal, 1877*******, 1) exited non-zero on 'Zap/4-1'
    -- Hungup 'Zap/4-1'