[asterisk-users] AudioCodes MWI

[Joseph]

When I configured AudioCodes MP-114 to MWI it keeps complaining bout subscription without mailbox:

chan_sip.c:15450 handle_request_subscribe: Received SIP subscribe for peer without mailbox: pstn-5665
chan_sip.c:15450 handle_request_subscribe: Received SIP subscribe for peer without mailbox: pstn-1270

these ports are FXO lines and sip.conf does not have any "mailbox" line for these lines. 
Anybody know how to turn off MWI for specific lines, is it done via MediaPack configuration or Asterisk sip.conf?

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Joseph