SIP Gateway Network Requirements

Configure firewalls, routers, SIP devices, and PBX systems with 2talk SIP gateway network requirements.

Use these network details when configuring firewalls, routers, SIP devices, or PBX systems for 2talk.

Core network details

Proxy

plus.2talk.com

TLS Proxy

plus.2talk.com port 5061

SIP Peering IP

27.111.12.66

Recommended firewall range

27.111.12.0/24

AS number

AS55561

SIP ports

UDP

5060

TLS

5061

RTP / UDPTL

30000-40000

T.38 fax media

4000-6000

Fax proxy

fax.2talk.com

Supported transports

  • UDP: Common SIP transport. Requires regular NAT keepalives.
  • TCP: Reliable transport with fewer keepalives.
  • TLS: Encrypts SIP signaling over TCP.
  • SRTP: Encrypts RTP media when supported by the device or PBX.

P-Asserted-Identity example

Some PBX systems use P-Asserted-Identity to present caller ID:

P-Asserted-Identity: <sip:[email protected]:5060>

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