[Mar 20 18:26:54] NOTICE[7081]: chan_zap.c:6663 handle_init_event: Alarm cleared on channel 7
    -- Executing [100@users:1] Dial("SIP/103-0820c588", "Zap/7/213291748") in new stack
[Mar 20 18:26:55] DEBUG[7506]: chan_zap.c:1947 zt_call: Dialing '213291748'
[Mar 20 18:26:55] DEBUG[7506]: chan_zap.c:2023 zt_call: Deferring dialing...
    -- Called 7/2132917468
  == Parsing '/etc/asterisk/manager.conf': Found
  == Parsing '/etc/asterisk/manager.d/op-panel.conf': Found
  == Parsing '/etc/asterisk/users.conf': Found
[Mar 20 18:26:56] NOTICE[7509]: manager.c:1015 authenticate: 127.0.0.1 tried to authenticate with nonexistent user 'admin'
    -- Zap/7-1 answered SIP/103-0820c588
  == Connect attempt from '127.0.0.1' unable to authenticate
    -- Hungup 'Zap/7-1'
  == Spawn extension (users, 100, 1) exited non-zero on 'SIP/103-0820c588'