# SIP Trunking

### SIP Trunking

A SIP Trunk provides the same service you get from a traditional phone lines. The difference is, instead of being a physical wire, a SIP Trunk is a “virtual” line which is provided by a SIP trunk provider delivered over IP using the SIP protocol.

### Benefits of SIP Trunking

* Lower circuit costs
* Lower PSTN origination/termination fees
* Better customer service
* Move offices and keep the same number
* Flexibility
* Scalability
* Reliability<br>

### Typical SIP Trunking Sample

<figure><img src="/files/uZlsA4Slyb7HOPYgNEI1" alt=""><figcaption></figcaption></figure>

### Features of the ProSBC

* Back-to-back user agent (B2BUA)
* DOS/DDOS protection, dynamic blacklisting, and call access control
* Easy to deploy, operate and manage through various interfaces including a RESTful API
* Integrated network troubleshooting tools (traces, media/signaling recording, test call generation, etc)
* Up to 60,000 simultaneous signaling and media sessions
* Media transcoding
* Flexible and extensive routing with SIP headers modification capabilities
* Fit to install on virtual machines, clouds, bare-metal servers, or TelcoBriges' hardware.

### Configuration

* [SIP Trunking Configuration Instruction](/configuration-details/configuration-by-use-case/sip-trunking-configuration.md)
* [SIP Trunking Sample Configuration File](/configuration-details/configuration-by-use-case/sip-trunking-configuration/configuration-files-for-sip-trunking-scenario.md)
* [SIP Trunk with Registration](/configuration-details/configuration-by-use-case/configuring-sip-registration-to-sip-proxy.md)

### Troubleshooting

<table><thead><tr><th width="200">Call Trace</th><th width="200">Test Call</th><th width="200">TBReport</th><th width="200">Advanced Troubleshooting of ProSBC</th></tr></thead><tbody><tr><td><ul><li><a href="/pages/wANvjzXmam8kffkMPw9X">Configure call trace</a></li><li><a href="/pages/0xUPGJa2HODY3Q6dXomj">Retrieve call trace</a></li></ul></td><td><ul><li><a href="/pages/X5qsI1juaiqbPcEAM4kK">Creating a Test Call</a></li></ul></td><td><ul><li><a href="/pages/o5WkY2J8kt6xmZ8P9npo">Capture a report of the system</a></li></ul></td><td><ul><li><a href="/pages/JtFwsTqktzofDpi5TFoE">Advanced Troubleshooting of ProSBC</a></li></ul></td></tr></tbody></table>

### References

* [ProSBC Datasheet](/appendices/appendix-b-product-datasheets.md)
* [Wikipedia SIP Trunking](https://en.wikipedia.org/wiki/SIP_trunking)


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