G1FEF – G1FEF

M590E hardware mods

November 21, 2018November 17, 2019 G1FEF Hardware

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

September 8, 2018September 8, 2018 G1FEF Programming

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

September 8, 2018September 8, 2018 G1FEF System admin

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 […]