This is the support site for Andrews & Arnold Ltd, a UK Internet provider. Information on these pages is generally for our customers but may be useful to others, enjoy!

VoIP Phones - SNOM M9

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Snomm9r.jpg The SNOM M9r is a DECT base station and handset system. you can have a single base station and multiple handsets.

Phone Details

SNOM M9r Versions tested
Version Notes
9.5.14-a IPv6 Works
9.6.2-b IPv6 Works
Feature Notes
Supports 302 Redirect Yes
Tested on FireBrick SIP Server Yes
IPv6 Support Yes


Apart from the 'Identity' settings, no additional configuration is required.

SNOM M9 Identity Settings
Setting Value
Identity active on
Account Your Number
Outbound Proxy Leave Blank
Authentication Name Your Number
Password Your Password
Optional: Call Waiting Disable
Optional: Use Outbound (Helps with transferring, see notes below) Enable

Identity Settings


  • IPv6 just works on this phone.
  • We've had occasional reports of call transfers failing. If this happens it's worth trying the "use outbound" setting from Advanced - SIP/RTP (Tab) - SIP(Section): Use Outbound. See the Snom documentation for more information.

Firewall & Security

  • You will also want to set up firewall rules, as per the VoIP Firewall page.
  • Also see the VoIP Security page for information about securing your VoIP service.