How do I configure SIP as a service from Paytia?

Adding a sip trunk profile to your telephone system to allow calling in and out via Paytia

When connecting your telephone system to the Paytia SIP as a service product there will be several settings you will need to setup on your SIP trunk connection.

These are

  • IP Addresses
  • Firewall ports
  • Codecs
  • SIP URL header format
  • Telephone number presented


IP Addresses

IP address. Paytia works on a trusted IP address model. You will need to provide Paytia support the IP address your telephone system presents when making outbound calls.

Paytia’s SIP IP endpoint you will configure your telephone system to connect to is This is an elastic IP address, so it stretches across the Paytia load balanced services.

If you are an existing Paytia user and need your telephone system registered please complete this form IP registration form


Firewall ports

SIP firewall ports. Paytia will send and receive calls using UDP port 5060 for SIP or TCP 5061 for TLS SIPS.

Media firewall ports. Paytia will react to the media port range you set. Or we can agree an accepted range e.g. UDP 10,000 – 20,000



Codec – Paytia work with G.711 A-law, G.711 U-law and G.729 in this order. Codecs control how the audio of your telephone calls are compressed and sent. The key point here is the Paytia side and your PABX side must match.


SIP URL header

SIP header URL – Paytia is expecting a call to its platform from your PABX in the format or sip:1-999-123-4567@Your_Internet_Public_IP_Address


Presentation telephone number (Trunk CLI)

The telephone number your telephone system presents when making outbound calls should match the telephone number you setup on your Paytia account. We will use this number as an extra match value for accepting calls from your telephone system.