Learn how to set up and manage inbound SIP calls. This guide shows you how to configure inbound calling effectively.

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What is SIP?

Session Initiation Protocol (SIP) is a protocol for starting, managing, and ending real-time voice and video calls over the internet. SIP uses VoIP (Voice over Internet Protocol), so you can make calls online instead of using traditional phone lines.

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Why use SIP?

SIP offers several advantages over traditional calling:
  • Cost-effective: Make calls over the internet and reduce long-distance charges.
  • Scalable: Add or remove phone numbers without extra hardware.
  • Flexible: Make and receive calls from computers, mobile devices, or VoIP phones.
  • High call quality: Enjoy better audio with a stable internet connection.
  • Business integration: Connect SIP with CRM, call centers, and other tools for efficiency.

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SIP domain for incoming calls

Send calls to this SIP domain: 
bluespace.sip.twilio.com

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Call routing

Configure your phone number to an assistant. For example, if assistant ID 443 is linked to +12359845123, initiate the SIP call to: 
+12359845123@bluespace.sip.twilio.com
Our system automatically identifies the number and routes the call to Assistant 443 for handling. 🤖

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Important note

The assistant must be an inbound assistant to receive calls using phone/SIP.