These phones are available at very low cost, e.g. on eBay and work great as a VoIP phone. They support up to 4 “lines” or SIP accounts and are very easy to program. For anyone interested in hacking the onboard CPU there is a serial interface available on the PCB – Look for “J3” which […]
M590E hardware mods
The M590E is a 2G GSM module that, at the time of writing, can be bought as a kit on eBay for around £1 complete with PCB and components.
Turning POE on and off on the Cisco 3750 via SNMP
I recently had a requirement to be able to turn the POE power off / on on specific ports on a remote c3750 POE switch in order to reboot devices that kept crashing.
Asterisk systemd startup script
The systemd startup script “out of the box” (at least up to version 15.5) for Asterisk does not work properly: on rebooting the server the ownership of /run/asterisk (symlink /var/run/asterisk) reverts to root.root instead of asterisk.asterisk The reason for this is that the o/s removes and re-creates the /run/asterisk directory on reboot. The solution is […]