SIP trunk
Connect your existing IP PBX to the public telephone network. Scalable channels, competitive per-minute rates, reliable termination.
SIP trunk service — from VoIP providers, at competitive rates
In today's digital age, businesses look for cost-efficient, simplified communications. A SIP trunk is the technology that links your existing IP-PBX to the public telephone network (PSTN) over the internet — without separate voice and data lines.
What is a SIP trunk?
SIP (Session Initiation Protocol) trunking carries voice, video and messaging over the internet. Unlike traditional analogue lines and ISDN PRI connections, a SIP trunk uses the IP protocol, so the business can converge its voice and data networks.
How it works
- SIP protocol — an open signalling protocol for multimedia sessions
- Trunk — a single line that handles multiple simultaneous calls
- IP-PBX — handles internal call management and communicates with the SIP provider
Key advantages of a SIP trunk
- Cost efficiency — voice and data on one line, reduced maintenance costs, competitive per-minute rates
- Scalability — pay only for the channels you need, expandable at any time
- Reliability — geographic redundancy and automatic failover on network faults
- Global reach — local presence in multiple countries, with local numbers
- Advanced features — video conferencing, instant messaging, UCaaS integration
The SIP trunk is available both as a standalone product and as a complement to the PBX. Request a quote and we will calculate how much you can save compared to traditional phone lines.
Technical details
- Protocol: SIP (RFC 3261), SDP (RFC 4566)
- Codecs: G.711A, G.711U, G.729
- Termination: the call termination fee follows Magyar Telekom's current wholesale terms
- Channels: any number of simultaneous calls, expandable as needed
For technical questions, detailed data is available on the Technical information page.