The trunk presents a standard SIP interface, so systems that speak SIP can register to it or be allowed by IP. That includes the open-source PBXs most Indian businesses actually run. There is no vendor-specific SDK to adopt and no agent to install on your PBX - you configure a trunk in the system you already have.
Bring your own PBX
Standard SIP
API included
Connect the phone system you already run - the trunk is standard SIP, not a proprietary integration.
Standard SIP, not a proprietary protocol
If your system speaks SIP, connecting is a configuration exercise rather than an integration project.
Nothing to install on your PBX
No agent, no plugin, no vendor SDK on the system you already depend on.
Registration or IP-based auth
Connect the way your setup expects, rather than being forced into one authentication model.
Keep your existing investment
Replace the line into the PBX without replacing the PBX.
End to end, in the order it actually happens.
Provision a trunk and retrieve its connection details.
Add it as a SIP trunk in your PBX.
Authenticate by registration or have your static IP allowed.
Place test calls in both directions.
Move your inbound numbers onto the trunk.
Worth knowing before you build a process around it.
FreePBX and Asterisk
3CX deployments
Legacy PBX replacement
Hybrid on-premise and cloud
Trunk Provisioning
Create, update and remove SIP trunks from the portal, and run more than one trunk on the same account.
Learn moreSIP Credentials & Rotation
Reveal your trunk's SIP password when you need it, and rotate it without rebuilding the trunk.
Learn moreNumbers on Your Trunk
Attach numbers to a trunk and change which trunk each one points at, without republishing the number.
Learn moreThe trunk presents a standard SIP interface, so systems that speak SIP can register to it or be allowed by IP. That includes the open-source PBXs most Indian businesses actually run. There is no vendor-specific SDK to adopt and no agent to install on your PBX - you configure a trunk in the system you already have.
1. Provision a trunk and retrieve its connection details. 2. Add it as a SIP trunk in your PBX. 3. Authenticate by registration or have your static IP allowed. 4. Place test calls in both directions. 5. Move your inbound numbers onto the trunk.
There is no certified-PBX list. Compatibility is established by configuring and testing your specific system and version. Codec behaviour and transcoding should be verified for your deployment rather than assumed. Firewall and NAT configuration on your side is yours to get right; it is the most common cause of one-way audio.
Hospitality, Manufacturing, Healthcare, Education. Typical uses are freepbx and asterisk, 3cx deployments, legacy pbx replacement, hybrid on-premise and cloud.
SIP trunking is a method of delivering voice calls over the internet using the Session Initiation Protocol (SIP). It replaces traditional PRI/ISDN lines, connecting your PBX or contact center to the public telephone network (PSTN) via an internet connection.
SIP trunking uses an internet connection instead of a physical PRI line. You set the number of concurrent calls on the trunk instead of buying fixed 30-channel PRI circuits, and there is no telco hardware to install on site. Edesy SIP calls cost Rs 0.50/min with a 60-second pulse, and unanswered calls are free.
Rs 0.50/min with a 60-second pulse, unanswered calls free. Connect the PBX you already run.