Your IP-PBX
Acts as a bridge between your network and AlienVoIP.
SIP Trunk Singapore
Connect Your PBX To Reliable VoIP Calling
Modernize your communication with AlienVoIP's reliable, cost-effective, and scalable SIP trunking solutions. Get SIP credentials, PBX configuration guidance, routing, codec and business call setup support.
What is SIP Trunking?
Replace traditional phone lines with flexible internet voice connectivity
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?
A simple call path connects your SIP-compatible PBX, AlienVoIP SIP trunking service and the recipient using SIP and RTP protocols.
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
The same setup flow from the original page, arranged to help prospects understand the next action before contacting sales.
Register Online
Register an AlienVoIP account online.
Obtain SIP Credentials
Obtain your SIP credentials including username, password, registrar IP, codec and network settings.
Configure PBX
Configure your SIP-compatible IP-PBX with the provided information.
Purchase Credits
Purchase AlienVoIP credits to start making local and international calls.
Why Choose AlienVoIP SIP Trunking?
Designed for businesses that want a cleaner PBX calling setup, lower calling cost options and scalable voice connectivity.
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.
What To Prepare Before Requesting SIP Trunk Setup
Share these details and the AlienVoIP team can respond faster with the right setup direction.
- PBX or IP-PBX brand and model
- Number of users, extensions or concurrent calls required
- Whether calls are mainly Singapore local, Malaysia or international
- Current phone line or PBX setup that needs to be replaced or connected
- Internet connection details and network/firewall contact person
- Any call routing, IVR, recording or branch call requirements
Sales Note
Not sure whether your PBX supports SIP trunk?
Send the PBX model, your call requirement and your current phone setup. The team can advise whether SIP trunking is suitable, what credentials are needed and what network settings should be prepared.
A proper SIP trunk enquiry should include PBX compatibility, SIP credentials, registrar IP, codec, routing and network readiness.
Suitable For Singapore Business Calling Needs
AlienVoIP SIP trunking can support businesses that want a practical way to connect IP-PBX calling with VoIP flexibility.
Office PBX Upgrade
Connect SIP-compatible PBX systems to VoIP calling instead of relying only on traditional telephone lines.
Branch Calling
Support growing teams and branch communication with scalable SIP trunk direction.
International Calls
Use AlienVoIP credits to start making local and international calls from supported SIP devices or PBX systems.
SIP Trunking Questions
Quick answers for prospects comparing SIP trunk, PBX and business VoIP setup options.
What is SIP trunking?
SIP trunking delivers voice communications over the Internet, replacing traditional telephone lines with logical connections between IP-PBX systems and VoIP servers.
Does AlienVoIP provide SIP credentials?
Yes. The setup flow includes SIP credentials such as username, password, registrar IP, codec and network settings.
Can it work with my existing PBX?
It depends on whether your PBX is SIP-compatible. Share your PBX brand and model so the team can check the right setup direction.
How do I start calling?
Register an AlienVoIP account, configure your SIP-compatible IP-PBX and purchase AlienVoIP credits to start making local and international calls.