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Configuring A1ROUTES SIP Trunk with Elevenlabs


Configure A1ROUTES SIP Trunk in ElevenLabs (Outbound Calls)

Prerequisites

  • Active A1ROUTES SIP Trunk

  • SIP credentials from A1ROUTES (IP / domain, username, password)

  • ElevenLabs account with Telephony / SIP enabled

  • One DID bought from A1ROUTES


Step 1: Log in to ElevenLabs Dashboard

  1. Go to the ElevenLabs dashboard

  2. Open Phone Numbers from the left menu under Deploy

  3. Select From SIP Trunk from Import Number button



Step 2: Create a New SIP Trunk

  1. Click From SIP Trunk

  2. Enter appropriate name in Label field

  3. Enter your DID number bought from A1ROUTES in Phone number field

  4. There is nothing much to do inbound configuration.




Step 3: Outbound Configuration

Fill the SIP configuration as follows:

  • In Address field enter :Provided by A1ROUTES (example: sip.a1routes.com)

  • Transport: select TLS or TCP both will work

  • SIP Trunk Username:SIP username from A1ROUTES (can be found your A1ROUTES account dashboard) enter it in the form sipusername@domain.com (domain is your address field value)

  • SIP Trunk Password :SIP password from A1ROUTES (can be found your A1ROUTES account dashboard)

  • Port:5060 (unless specified otherwise)


Save the trunk. by clicking Import button at the bottom.



Step 4: Set Outbound Caller ID

  1. Go to Outbound Settings

  2. Set Caller ID / From Number

    • Use your A1ROUTES DID

    • Or a verified number

  3. Enable Send From Header


Step 5: Assign SIP Trunk to an Agent or App

  1. Edit the phone number just got imported in ElevenLabs by clicking on phonenumber

  2. Select Agent from the drop down menu




Step 6: Test Outbound Call

  1. Initiate an outbound call from ElevenLabs

  2. Dial an external number (mobile or PSTN)

  3. Confirm:

    • Call connects

    • Audio is clear

    • Caller ID is correct


Common Issues and Fixes

  • Call not connecting→ Verify SIP username and password

  • 401 Unauthorized→ Verify SIP username and password



Conclusion

Your A1ROUTES SIP trunk is now successfully configured with ElevenLabs for outbound calling.This setup allows reliable PSTN breakout with low latency and competitive rates.


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