SIP Trunk and SIP Services in Pakistan
SIP trunking and DID numbers that connect your existing PBX platform to the telecom network for inbound and outbound calling.
- Virtual phone lines over the internet
- DID numbers routed to any extension
- Works with Yeastar, Grandstream & more
- Configurable concurrent call limits
What Is SIP Trunking?
SIP (Session Initiation Protocol) is the technology used to set up and manage voice calls over the internet. A SIP trunk is a virtual phone line that connects your PBX to the telephone network, replacing traditional physical phone lines.
SIP Trunk vs Traditional Telephone Line
A traditional line is a dedicated physical circuit; a SIP trunk carries calls as data over your internet connection, so you can typically add or remove lines without new physical wiring, and scale concurrent call capacity based on your license.
How SIP Connects to Your IP PBX
Your IP PBX is configured with SIP trunk credentials (server address, port, authentication) provided by the SIP service. Once registered, the PBX can make and receive external calls, including DID numbers routed directly to specific extensions or departments.
- DID numbers for direct inbound routing
- Inbound and outbound calling
- Configurable concurrent call limits
Compatible PBX Platforms
We configure SIP trunks with all major PBX platforms.
YeastarIP PBX
GrandstreamIP PBX
FreePBXSoftware PBX
3CXSoftware PBXSIP Security & Setup Process
A secure, tested rollout in four steps.
Compatibility Check
We confirm your PBX supports SIP trunk registration.
Trunk Configuration
We register the trunk and configure inbound/outbound routing.
DID Setup
We map DID numbers to the correct extensions or IVR.
Testing & Support
We test call quality and provide ongoing troubleshooting.
Related Services
Explore the rest of our business communication stack.
Trusted by Businesses Across Pakistan
Organizations that rely on our communication deployments.
Frequently Asked Questions
What is SIP?
SIP (Session Initiation Protocol) is the technology used to set up, manage and end voice calls over the internet, used by IP PBX systems and IP phones.
What is SIP trunking?
SIP trunking is a virtual phone line connecting your PBX to the telephone network over the internet, replacing traditional physical phone lines.
How does SIP trunk connect to an IP PBX?
The PBX is configured with SIP trunk credentials such as server address and authentication details. Once registered, it can send and receive external calls through the trunk.
What is a DID number?
A DID (Direct Inward Dialing) number is a phone number that routes directly to a specific extension, department or IVR menu on your PBX.
Can SIP trunks replace traditional phone lines?
In most cases, yes. SIP trunks can replace traditional analog or digital phone lines for both inbound and outbound calling, subject to a compatibility check with your PBX.
Is SIP trunking secure?
SIP trunk security depends on configuration such as authentication, IP restrictions and encryption where supported. Our team applies standard security practices during setup.
Can SIP trunks work with Yeastar or Grandstream PBX platforms?
Yes, SIP trunks can be configured to work with Yeastar, Grandstream and other compatible PBX platforms.
Ready to Get Started?
Tell us about your team size and requirements — we’ll recommend the right setup and send a free quote.