Does anybody knows how to enable "Stutter Tone" on Audiocodes MP-114? Similar feature like Sipura has, when message is left in a mailbox the unit send a 0.5sec ring tone to the phone every 30min. or so. IN: SIP Advanced Parameters --> Supplementary Services: Message Waiting Indication (MWI) Parameters Enable MWI: enable MWI Analog Lamp: enable Subscribe to MWI: Yes MWI Server IP Address: My_asterisk_IP MWI Server Transport Type: Not configured MWI Subscribe Expiration Time: 7200 Stutter Tone Duration: 2000 MWI Subscribe Retry Time: 20 MWI Lamp is working but there is no "Stutter Tone" -- Joseph