Does anyone know how I can send from ser a NOTIFY (or is perhaps INFO)
message to a Cisco ATA 186 or other UA to turn on/off the message
waiting indicator for voicemail. The Cisco ATA is capable of playing a
stuttered dial tone to indicate voicemail but I cannot find any
documentation on how to toggle this tone on/off from the proxy. I also
have other sip phones like the Grandstream where I would like to signal
the MWI to it as well. Does anyone know how this can be done? I assume
via the ser_fifo, but what kind of message and what should it look like?
-- Josh