Snom M3

Main Features

• Display: 128 x 128 pixels, 65536 colors, backlit
• Li-Ion battery pack for 8 hours of calls or 100 hours standby
• Range: 50 meters indoors, 100 meters outdoors
• 12 numerical keys, 5 navigation keys, 2 function keys
• Speakerphone on mobile handset
• Polyphonic ringtones
• Automatic registration of handset
• Separate charging cradle for handset
• 8 handsets per base station
• 8 SIP registrations with different servers/registrars
• Up to 3 concurrent calls per base station
• Three-way conference
• Remote setup, password protection
• Open DECT GAP standard

Firmware

• 2.02 - (http://wiki.snom.com/Snom_m3/Firmware/V2)
• 1.22
• 1.20beta - (http://wiki.snom.com/Snom_m3/Firmware/Release_Notes/1.20)
• 1.19beta - (http://wiki.snom.com/Snom_m3/Firmware/Release_Notes/1.19)
• 1.16 - (http://wiki.snom.com/Snom_m3/Firmware/Release_Notes/1.16)
• 1.11 - 20080403 - Not shown on Snom's website, but available to the handset (providing the Firmware-URL is set to http://provisioning.snom.com/m3/firmware/)
  • DND now set on web page
  • CWaiting now set on web page
  • Registration status of each handset now shown on web page
  • Codec selection problem (see below) resolved
  • Other changes unknown - Snom's firmware release notes still shows details for 1.07 (as at 20080520)
• 1.07
  • See Release notes

Incompatiblity

• There is no documentation about the provisioning. From my reverse engineering it looks to accept the same configuration file as the new incoming Polycom IP200W
• The MWI VoiceMail messages does not seems compatible with Asterisk 1.4, there is no way the phone shows how many messages you've received.

• The M3 does not use the same SIP stack as other SNOM phones (3xx), so be aware of a whole new set of bugs.
• The handset doesn't support GSM, so if you want a low bandwidth codec, you'll have to run with iLBC or G.729.
• The base station/handset(s) don't support provisioning in the same way as other Snom equipment.

Problems

• gmaoret - With Elastix 0.9.2 (I don't know with other distributions) when a call is made to a busy or unavailable extension the base station reboots, losing all calls.
  • wmundy - Be sure you're using their latest firmware.
    • gmaoret - I'd tried all the firmware version available. No one works.
• There is no way to download/backup/upload address book(s).
• Log doesn't show enough SIP information to be useful (reason for failed registration etc.)
• Log doesn't show DECT registrations. ...