[Asterisk-Users] spa 2000 phones do not ring

[Stewart Nelson]

> When I make a call to either 706 or 707 from any phone, the phone 
> attached to the spa does not ring. However, if I pick up the appropriate 
> phone, the connection is made and normal conversation can take place.

I had the same problem with a Cisco 827-4V.  It turned out that the
phones were fussy about ringing frequency, given the relatively low
output voltage from the SLIC on most FXS devices.  The command
"pots ringing-freq 50Hz" fixed it.

On the SPA, under "Ring and CWT Cadence", you can set ring waveform,
frequency, and voltage.  Try increasing the voltage, and/or setting
the frequency up to 50 Hz or down to 20 Hz.

--Stewart