Wrong RTP Ports for Snom Basestation M300 ?

[dustycr]

Hello,

on our snom base station which is provisioned by 3cx via the "Local Lan Method" we sometimes have the problem, that there is no audio transmitted after the call is accepted.

I have looked into the settings of the base station and found the following entry inside the the configuration

<rtp_port_start>50004</rtp_port_start> <rtp_port_end>50043</rtp_port_end>

This settings dont match our 3CX Firewall settings and also the RTP port range defined inside the 3cx.

Port 9000-10999 (inbound, UDP) for RTP - already open if using SIP Trunks.

Could this be the potential reason for the problem ?

Firewall Checks on the 3CX are okay and the Basestation is inside the same network of the 3cx.

Our external Firewall is an Opnsense

 

[Saqqara]

As the device is local, all the traffic will be internal.

The firewall rules will not be used, as the traffic is not going externally.

 

[JohnS_3CX]

Like @Saqqara said that is not something to worry about since that port range is for the WAN side.

On the LAN side the PBX will use its own ports, and the Snom base will also use its own ports (they don't have to be the same)