SIP Configuration

If you want to use your own business phone numbers or VoIP provider (such as Twilio, Telnyx, Plivo, etc.) with Replicer's voice AI, follow this guide to set up your SIP Trunk in just a few minutes.

1. Origination Setup (Inbound Calls to the AI)

Origination forwards calls from your phone number to Replicer's servers.

In your provider's control panel (e.g. Twilio's Origination section or other carriers' Inbound settings), set the following address as the Origination SIP URI:

sip:replicer-ai.sip.telnyx.com

2. Termination Setup (Outbound Calls from the AI)

Termination allows Replicer to make outbound calls (e.g. for outbound campaigns or call transfers) using your rates and your Caller ID.

To authorize Replicer to send calls to your trunk, you need to allow traffic from our gateways.

Option A: IP Authentication (Recommended)

Add the following signaling IP addresses to your provider's Whitelist (or Access Control List — ACL). This provides maximum speed and security without needing to manage passwords.

Parameter	Value
Primary IPs	192.76.120.10, 143.11.12.1
Protocol	UDP / TCP
Port	5060

Option B: Credential Authentication

If you prefer not to use IP whitelisting, create a dedicated set of credentials (Username and Password) on your SIP provider and keep them handy for the final step.

3. Import the Number into the Replicer Dashboard

Once your provider is configured, you need to link the number to your Replicer account to activate the AI assistant.

1. Log in to your Replicer dashboard and go to Settings > Telephony.
2. Click "Connect Existing Number (SIP)".
3. Enter your Termination SIP URI (provided by your provider, e.g. your-company.pstn.twilio.com).
4. If you chose Option B in the previous step, enter the Username and Password you generated.
5. Click Save & Test.

Troubleshooting

The AI does not answer incoming calls

Verify that the address replicer-ai.sip.telnyx.com is correctly entered in the Origination field of your carrier and that there are no firewall rules blocking outbound traffic from your provider to Telnyx.

The assistant makes the call but there is no audio

Make sure your corporate firewall or provider supports RTP (audio) traffic and is not blocking the standard port range (usually 10000-20000).

How can I display my phone number (Caller ID)?

To display your real number when Replicer makes a call, ensure you have verified that number on your SIP provider (e.g. Twilio Verified Caller IDs) and Replicer will automatically use it as the identifier in SIP headers.

Next step

After connecting your SIP number, you can create an AI agent to handle inbound and outbound calls.