You can remote-reboot your Polycom phones from the Asterisk CLI by sending a SIP NOTIFY command. This command instructs the phone to recheck its configuration, and therefore, will reboot when certain parameters have been set in your phone configuration provisioning.
Make sure the following directive is set in your provisioning config:
The trouble with PSTN lines is that the CID has to be transmitted in-band, and there are more than one standard in doing this. On top of that, there are small differences between the various Telcos on the planet. And finally, to make things worse, documentation about it, is sparse and scattered at best.
The settings displayed usually go in /etc/asterisk/zapata.conf (either directly, or by inclusion).
How CID is handled is defined by the following variables:
cidsignalling: tells how the CID signalling occurs, can be bellcore (mostly US hardware), v23, or dtmf.
cidstart: specifies how the start of the CID transmission is indicated. Can be polarity (the polarity on the wire is swit ...