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StreamKit Cloud SIP trunking setup

Use Dynamic SIP Trunking so your contact centre can send SIP to Exotel, and StreamKit bridges media to your AgentStream WebSocket bot.

Customer → CC (SIP) → Exotel StreamKit → AgentStream WSS ↔ bot

Full narrative walkthrough (headers, Passthru escalate, modes): StreamKit Cloud SIP trunking setup on the docs portal. AgentStream bridge overview: StreamKit Cloud.

Map the phone number with "mode": "flow" for Voicebot / StreamKit App Bazaar journeys. For Connect-to-SIP only, use pstn. See Call directions.

Step 1 — Create trunk​

ParameterRequiredTypeDescription
trunk_nameYesStringAlphanumeric + underscores, max 16 chars
nso_codeYesStringUse "ANY-ANY"
domain_nameYesString{account_sid}.pstn.exotel.com

Try It​

Save response.data.trunk_sid for the next steps.

Step 2 — Map phone number (mode: flow)​

ParameterRequiredTypeDescription
phone_numberYesStringE.164 DID
modeYesStringUse flow for StreamKit / Voicebot

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Step 3a — Whitelist IP (outbound)​

Required when your system has a static egress IP.

ParameterRequiredTypeDescription
ipYesStringPublic IPv4 of your SBC / PBX
maskNoIntegerCIDR mask (default 32)
curl -s -u "$EXOTEL_API_KEY:$EXOTEL_API_TOKEN" -X POST \
  "https://$EXOTEL_SUBDOMAIN/v2/accounts/$EXOTEL_ACCOUNT_SID/trunks/<trunk_sid>/whitelisted-ips" \
  -H "Content-Type: application/json" \
  -d '{ "ip": "<your_public_ip>", "mask": 32 }'

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Step 3b — Digest credentials (optional)​

Use for cloud platforms with dynamic IPs. You can use ACL, credentials, or both.

ParameterRequiredTypeDescription
user_nameYesStringSIP digest username
passwordYesStringStrong password
friendly_nameNoStringLabel, max 32 chars
curl -s -u "$EXOTEL_API_KEY:$EXOTEL_API_TOKEN" -X POST \
  "https://$EXOTEL_SUBDOMAIN/v2/accounts/$EXOTEL_ACCOUNT_SID/trunks/<trunk_sid>/credentials" \
  -H "Content-Type: application/json" \
  -d '{
    "user_name": "SIP_USER",
    "password": "SIP_PASS",
    "friendly_name": "voice_ai_platform"
  }'

Try It​

Step 4 — Firewall​

Open Exotel signaling and media IPs on your edge. See Network & firewall and the docs portal Network and firewall configuration.

Step 5 — App Bazaar flow + VoIP Exophone​

  1. Build a flow: Greeting (recommended) → Voicebot or Stream → optional Passthru / Connect
  2. Map your VoIP Exophone to that flow

Deep how-to: StreamKit Cloud SIP trunking setup · AgentStream overview: StreamKit Cloud

Send SIP INVITE with mandatory X-Exotel-AccountSid: <Account_SID>.

Step 6 — Bot WebSocket​

Implement the WebSocket protocol on your wss:// endpoint.