Ports IPs and our Network


TCP/TLS Proxytls.2talk.com (port 5061)
SIP Peering27.111.12.66
SIP Registrationplus.2talk.com
SIP Port – UDP5060
SIP Port – TLS5061 (ensure transport = TLS)
Firewall IP Range27.111.12.0/24
AS NumberAS55561

Other ports

RTPSet by your router (our port range is 30,000 – 40,000)
UDPTLSet by your router (our port range is 40,000 – 50,000)
t.38 (faxing)4000-6000
Primary NTPn/a

Real-Time Protocol (RTP)

RTP is the protocol used to deliver audio and video over IP networks. RTP uses the UDP protocol because its efficient in low-quality networks such as phones communicating over the public internet. (NB – while your router sets the specific RTP port, we will accept communication between the 30-40k range).

Whats the difference between UDP and TCP

UDP and TCP SIP are both used to send data over the Internet or a local network with UDP being older but more common protocol and TCP with its guarantees of transmission the more modern & preferred protocol for companies like Microsoft. While UDP is the more efficient transport for service providers and customers alike — we still prefer TCP because packet transmission and order is guaranteed and with modern internet speeds and CPU processing power the costs of TCP in our view are academic.We support both UDP and TCP.

TLS Support

We support TLS connections from devices that support this protocol for deployments that require increased security. You can use tls.2talk.com as your proxy/host but remember to set the transport to TCP via 5061.

Updated on 22 October 2021

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