StreamKit Cloud SIP trunking Setup

19 min

StreamKit Cloud Setup (for Voice AI)

StreamKit enables you to connect your Contact Center to Voice AI bots. The setup is similar to PSTN, but uses mode: flow when mapping phone numbers.

Setup Flow:

Create Trunk → 2. Map Phone Number (mode: flow) → 3. Map ACL to Trunk

StreamKit: Create Trunk

1. Create Trunk

Creates a new SIP trunk. This is the first step for all SIP Trunking use cases.

A SIP Trunk acts as a virtual connection between your communication system (PBX/Contact Center) and Exotel's telephony network.

HTTP Request

POST https://<your_api_key>:<your_api_token>@<subdomain>/v2/accounts/<your_sid>/trunks

Request Headers

Header	Value
Content-Type	application/json

Request Parameters

The following parameters are sent as JSON in the body of the request:

Parameter Name	Mandatory/Optional	Value
trunk_name	Mandatory	String; Unique identifier for the trunk. Must be alphanumeric with underscores only, maximum 16 characters. Example: outbound_trunk, my_pbx_trunk
nso_code	Mandatory	String; Network Service Operator code. Use ANY-ANYfor standard configuration.
domain_name	Mandatory	String; SIP domain for the trunk. Format: <your_sid>.pstn.exotel.com. Example: ameyo5m.pstn.exotel.com

Example Request

curl -X POST "https://<your_api_key>:<your_api_token>@<subdomain>/v2/accounts/<your_sid>/trunks" \ -H "Content-Type: application/json" \ -d '{ "trunk_name": "outbound_trunk", "nso_code": "ANY-ANY", "domain_name": "<your_sid>.pstn.exotel.com" }'

HTTP Response

On success, the HTTP response status code will be 200 OK.

The trunk_sidis the unique identifier of the trunk - save this value as it will be required for all subsequent API calls.

Example Response

{ "request_id": "10a67da360d446378d5c2b66407b7f18", "method": "POST", "http_code": 200, "response": { "code": 200, "error_data": null, "status": "success", "data": { "trunk_name": "outbound_trunk", "date_created": "2026-01-23T09:24:59Z", "date_updated": "2026-01-23T09:24:59Z", "trunk_sid": "trmum1f708622631150902801a1n", "status": "active", "domain_name": "ameyo5m.pstn.exotel.com", "auth_type": "IP-WHITELIST", "registration_enabled": "disabled", "edge_preference": "auto", "nso_code": "ANY-ANY", "secure_trunking": "disabled", "destination_uris": "/v2/accounts/ameyo5m/trunks/trmum1f708622631150902801a1n/destination-uris", "whitelisted_ips": "/v2/accounts/ameyo5m/trunks/trmum1f708622631150902801a1n/whitelisted-ips", "credentials": "/v2/accounts/ameyo5m/trunks/trmum1f708622631150902801a1n/credentials", "phone_numbers": "/v2/accounts/ameyo5m/trunks/trmum1f708622631150902801a1n/phone-numbers" } } }

Response Parameters

Parameter Name	Type & Value
request_id	String; Unique identifier for this API request
method	String; HTTP method used (POST)
http_code	Integer; HTTP status code (200 for success)
trunk_sid	String; Important - Unique identifier for the trunk. Save this for subsequent API calls. Example: trmum1f708622631150902801a1n
trunk_name	String; Name of the trunk as provided in request
domain_name	String; SIP domain for the trunk
status	String; Current trunk status: active- Trunk is ready for use, inactive- Trunk is disabled
auth_type	String; Authentication type. Currently only IP-WHITELISTis supported
registration_enabled	String; SIP registration status: enabledor disabled
edge_preference	String; Edge server preference. Default: auto
nso_code	String; Network Service Operator code
secure_trunking	String; TLS status: enabledor disabled
destination_uris	String; API path to manage destination URIs for this trunk
whitelisted_ips	String; API path to manage ACLs (whitelisted IPs) for this trunk
credentials	String; API path to credentials for this trunk
phone_numbers	String; API path to manage phone numbers for this trunk
date_created	String; ISO 8601 timestamp when trunk was created
date_updated	String; ISO 8601 timestamp when trunk was last updated

StreamKit: Map Phone Number (Flow Mode)

Same endpoint as PSTN, but with mode: flowto route calls to Voice AI bot.

Example Request

curl -X POST "https://<your_api_key>:<your_api_token>@<subdomain>/v2/accounts/<your_sid>/trunks/<trunk_sid>/phone-numbers" \ -H "Content-Type: application/json" \ -d '{ "phone_number": "+919876543210", "mode": "flow" }'

Example Response

{ "request_id": "9351dabddc21476e8351d662f1ce31e1", "method": "POST", "http_code": 200, "response": { "code": 200, "error_data": null, "status": "success", "data": { "id": "41523", "phone_number": "+919876543210", "trunk_sid": "trmum1f708622631150902801a1n", "date_created": "2026-01-23T13:28:11Z", "date_updated": "2026-01-23T13:28:11Z", "mode": "flow" } } }

StreamKit: Map ACL to Trunk

Registers your server's public IP address for authentication. This is required for Outbound/Termination calls - allowing your system to send calls through the trunk.

ACL (Access Control List) ensures only authorized IP addresses can use your trunk for outbound calling.

HTTP Request

POST https://<your_api_key>:<your_api_token>@<subdomain>/v2/accounts/<your_sid>/trunks/<trunk_sid>/whitelisted-ips

Request Headers

Header	Value
Content-Type	application/json

Request Parameters

Parameter Name	Mandatory/Optional	Value
ip	Mandatory	String; Your server's public IP address. Must be a valid IPv4 address. Example: 44.248.146.11, 203.0.113.50
mask	Optional	Integer; Subnet mask in CIDR notation. Default: 32(single IP). Use 24for /24 subnet, 16for /16 subnet. Example: 32, 24

Example Request

curl -X POST "https://<your_api_key>:<your_api_token>@<subdomain>/v2/accounts/<your_sid>/trunks/<trunk_sid>/whitelisted-ips" \ -H "Content-Type: application/json" \ -d '{ "ip": "44.248.146.11", "mask": 32 }'

HTTP Response

On success, the HTTP response status code will be 200 OK.

Example Response

{ "request_id": "3daaed4cd05d443f854e07e60dd4c008", "method": "POST", "http_code": 200, "response": { "code": 200, "error_data": null, "status": "success", "data": { "id": "1153", "mask": 32, "trunk_sid": "trmum1f708622631150902801a1n", "ip": "44.248.146.11", "friendly_name": null, "date_created": "2026-01-23T11:37:36Z", "date_updated": "2026-01-23T11:37:36Z" } } }

Response Parameters

Parameter Name	Type & Value
id	String; Unique identifier for this ACL entry. Example: 1153
ip	String; The whitelisted IP address
mask	Integer; Subnet mask in CIDR notation
trunk_sid	String; The trunk this ACL is associated with
friendly_name	String or null; Optional friendly name for the IP
date_created	String; ISO 8601 timestamp when ACL was created
date_updated	String; ISO 8601 timestamp when ACL was last updated

Build Flow and Map VoIP Exophone follow for all steps StreamKit Cloud

b. Create flow in AppBazaar with Voicebot applet and passthru applet: https://my.in.exotel.com/apps

c. Procure VoIP exophone or contact support

d. Map DID to flow through Exophone: https://my.in.exotel.com/numbers

Github Repo

Postman Collection