Telephony Integration (SIP)
Seamlessly integrate VoiceInfra AI agents with your enterprise PBX, SBC, or contact center platform using industry-standard SIP trunking. Route existing phone numbers to AI agents.
Key Advantages
Discover how our AI voice agents transform lead qualification
Leverage Existing Infrastructure
Utilize your current PBX, SBCs, and desk phones without needing new hardware.
Use Existing Phone Numbers
Route incoming calls from your main business DIDs directly to AI agents.
Maintain Call Control
Manage call routing logic and numbering plans within your existing telephony environment.
BYO Carrier Option
Optionally use your preferred PSTN carrier for termination via your SBC.
Standard Protocol Compatibility
Works with most modern SIP-compliant telephony systems and contact centers.
Enable AI on Any Line
Direct calls for specific departments or functions (e.g., support, scheduling) to AI agents.
How SIP Integration Works
Establish a SIP trunk between your telephony system (PBX/SBC) and the VoiceInfra platform.
Configure SIP Endpoints
Define SIP connection details (IPs/domains, ports, credentials) on both VoiceInfra and your system.
Establish SIP Trunk
Create the trunk connection, ensuring firewall rules allow traffic and codecs match.
Configure Dial Plan/Routing
In your PBX/SBC, route specific inbound DID numbers or extensions to the VoiceInfra SIP trunk.
Test Call Flows
Verify inbound calls reach the AI agent and outbound calls (if applicable) function correctly.
Connects To Standard Telephony
Interfaces with any SIP-compliant PBX, Session Border Controller (SBC), or Contact Center platform.
Avaya Aura / IP Office
Cisco UCM / CUBE
Microsoft Teams (Direct Routing)
FreePBX / Asterisk
Genesys Cloud / Engage
NICE CXone / InContact
Five9
Amazon Connect
Twilio SIP Interface
Vonage Business Communications
Ribbon SBCs
Oracle SBCs
Frequently Asked Questions
Setting up SIP trunking typically requires knowledge of your specific PBX/SBC configuration, networking concepts (IP addresses, ports, firewalls), and SIP protocols. Collaboration between your telecom/network team and the VoiceInfra support team is often needed.
Common issues include firewall blocking traffic, codec mismatches between systems, incorrect routing rules in the PBX/SBC, and authentication problems. Thorough testing and clear documentation are key.
Yes, AI agents can typically initiate a SIP REFER request to transfer the call back to an extension or queue within your connected PBX/contact center, providing a seamless handoff.
SIP trunks connect systems, not individual users. You typically license the capacity on the VoiceInfra platform (e.g., concurrent calls) and ensure your PBX/SBC has appropriate trunk capacity. It doesn't consume individual user licenses on your PBX.
G.711 (ulaw/alaw) is widely compatible. Opus is often preferred for better quality at lower bandwidth, if supported by both systems. Ensure codec alignment between VoiceInfra and your PBX/SBC.
Security relies on proper configuration. Options like TLS for signaling encryption and SRTP for media encryption should be used where possible. Access control lists (ACLs) on firewalls and strong authentication are also crucial.
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