SFB 2015 - default RTP port range (confused)

New Contributor

Hi All,


Could someone please let me know the default RTP port range for SFP 2015 specifically between Mediation Server and SIP Trunks (routed to SIP PBX) 


I have seen a few different posts here indicating TCP/UDP 50.000-60,000 and some posts saying it uses the default RPC or RTP ephemeral port range and a number of sources stating that Mediation to Trunk uses 49152-57500  exclusively


please note this is for an on premises deployment where SIP PBX will sit in the same network as the Mediation Server


any guidance would be appreciated

3 Replies



What ports that is used between your ITSP (SIP Trunk) and Mediation or SBC is something you have to agree with them. Different ITSP uses different ports. I would say that TCP-5060/5061 for signaling and TCP/UDP 49152 - 65535 for media is most common.


For ports used by Skype for Business check this documentation


Also check the Workloads poster for a better overview.


best response confirmed by noxtopher (New Contributor)

@Linus Cansby 


In checking further  I believe the port range between Mediation and SIP trunk is 49152-57500 (TCP by default).


Thanks for your help



Good that you found it in the documentation from your SIP trunk provider.