In the User section at the top of your Power Trunk page, you choose one primary destination for your trunk's calls:

• SIP Trunk (default): Opens the SIP section below so you can connect your IP-PBX or SBC using Account (username and password) or IP Peer (static IP), or generate an Access Token.
• Third-Party Application: Routes calls directly to a cloud calling app (such as Microsoft Teams, Zoom Phone, Cisco Webex, or Genesys).
• None: Leaves the endpoint empty so an AI Voice Agent (AgentDuet) can answer and handle calls on its own.

Prerequisites

Make sure your organization has an active Power Trunk subscription, Concurrent Session license, and required user permissions.

Use the built-in SIP Trunk (PBX / SBC)

When SIP Trunk is selected in the User section, configure your PBX connection in the SIP section right below it:

Review your trunk location and High Availability nodes

• Overview: Displays your SIP Account, Location (SG, MY, ID, TH, or VN), and editable Trunk Label.
• High Availability (Zone A / Zone B): Each trunk includes two built-in network zones (Zone A and Zone B) for your location. Both zones are displayed read-only—if one zone is unreachable, traffic fails over to the other zone automatically within 2.5 seconds.

Choose your authentication method

Select how your PBX or SBC authenticates with Power Trunk:

1. Account (SIP Register — Username & Password):

• Select the Account tab.
• Copy the Username, Password, and SIP Server domain into your IP-PBX trunk settings.
• Under IP Allowlist, add up to 2 single public IPv4 addresses (CIDR subnets, IPv6, and private IPs are not accepted).
• Select Save.

1. IP Peer (Static IP):

• Select the IP Peer tab.
• Enter up to 2 single public IPv4 addresses for your PBX/SBC along with your signaling port and transport protocol.
• Select Save and confirm.

1. Access Token (Number Sharing):

• Select the Access Token tab if you are sharing this trunk's phone numbers with a partner or external platform via token integration.
• Type CONFIRM in the warning dialog to generate a one-time token (valid for 24 hours). (Note: Switching from Account to Access Token permanently deletes your old SIP credentials and removes local AI and Recording settings on this trunk.)

Download certificates and firewall settings

Expand Downloads at the bottom of the SIP section to download:

• TLS Certificate (.pem): Root certificate required for TLS 1.2+ encryption.
• SIP Details: Supported audio codecs (G.711 A-law, G.711 U-law, Opus), E.164 dial format, registration timer (3600s), and DTMF (RFC 2833).
• Firewall Details: Signaling IPs/ports (5061 / 5081) and RTP audio port ranges (10000–30000) to allow on your firewall.

Connect to a third-party application

Use this option to route calls directly to a cloud calling app (such as Microsoft Teams, Zoom Phone, Cisco Webex, or Genesys):

1. In the User section at the top of your trunk page, open the service dropdown.
2. Select the third-party application you want to connect.
3. If the application has multiple regional connectors, select the Connector Name for your country in the confirmation dialog and confirm.

1. Once connected, the SIP section hides automatically and calls route directly to your selected application.

Related content

• Turn on an AI Voice Agent or Call Recording
• Manage call rules, numbers, and member access