-- Executing Dial("SIP/androme.com-08144e00", "Zap/g1/0476960789") in new stack
    -- Called g1/0476960789
    -- Zap/1-1 answered SIP/androme.com-08144e00

Call is OK on SIP end, PSTN end does nothing (same is reported if cable is not plugged in)

    -- Hungup 'Zap/1-1'
  == Spawn extension (pstn, 1000, 1) exited non-zero on 'SIP/androme.com-08144e00'