What is SIP Trunking?
SIP (Session Initiation Protocol) trunking delivers voice communications over the Internet, replacing traditional telephone lines. Instead of physical wires, SIP trunks establish logical connections between IP-PBX systems and VoIP servers, enabling seamless voice traffic exchange over IP networks.
AlienVoIP's SIP trunking allows businesses to leverage modern internet technologies for improved flexibility, scalability, and cost-efficiency in their communications infrastructure.
How Does SIP Trunking Work?
Your IP-PBX
Acts as a bridge between your network and AlienVoIP.
Call Initiation
PBX sends call data to the SIP trunk provider.
Connection Setup
AlienVoIP establishes the call with the recipient.
Secure Transmission
Voice & signaling over SIP/RTP protocols securely.

Getting Started with SIP Trunking
- Register an AlienVoIP account online.
- Obtain your SIP credentials (username, password, registrar IP, codec, network settings).
- Configure your SIP-compatible IP-PBX with the provided information.
- Purchase AlienVoIP credits to start making local and international calls!
Why Choose AlienVoIP SIP Trunking?
Communication Integration
Blend VoIP and traditional telephony for customized solutions.
Stability & Security
Enjoy reliable and secure voice connections.
Cost-Effective
Save significantly with our competitive rates.
Scalable VoIP
Scale effortlessly as your business grows.
Efficient Maintenance
Lower maintenance costs with easy management.
Responsive Support
Get swift, professional technical assistance.
Proven Performance
Trusted since 2007 for reliable VoIP solutions.
Innovative Solutions
Stay updated with the latest VoIP advancements.