Question about Snom 300 IP Phone
Snom 300 IP Phone can calls outgoing, But cannot receive calls.It's connection was came from a domain network(LAN).
Is your phone connecting to a hosted PBX provider or is it connecting to a premise-based IP PBX? Incoming and outgoing calls are usually handled by two separate connections between your PBX and the service provider SIP trunk. Sounds like a registration problem with the SIP trunk. There is nothing you can do from the phone itself to fix this.
Posted on Jan 02, 2015
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Posted on Jan 02, 2017
SOURCE: can't connect to phone
I bought SNOM 300 and i was unable to connect the router in first go. it was keep saying Send DHCP reqt but nothing was happening. i tried even connecting SNOM 300 dirctly to my laptop but in vain. in last i started receiving message Ethernet cable unplugged.
I reset the SNOM 300 to the factory defaults which solved the problem immediately.
Get to the phone menu "configuration-Reset" and select this option. it will ask for the admin password which is 0000. This will fix the issue. try it.
Posted on Mar 12, 2009
Pick up the handset and press down on the direction button until the display reads "123" instead of "ABC" or "abc"
Posted on Oct 22, 2009
SOURCE: Cannot update firmware Snom 300
It's not really asking for a TFTP update, it's just something that is always checked for in the boot sequence.
As for manually setting the networking configuration rather than using DHCP, see page 14 of the manual at
for instructions on how to bypass DHCP and manually configure your settings.
Posted on Jan 09, 2010
SOURCE: my snom 300 phone displays
NR (Not Registered) status is shown on snom 300, when the phone's registration information is wrong. Login to the phone's GUI and double confirm the account details and password. The System Information page details the error. If it's a "Network Failure" error, you probably have to check whether the internet is up and the firewall is allowing VoIP traffic (both SIP and RTP)
Posted on Jan 14, 2011
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