Call Connection Failures

Problem: SIP trunk not registering with ElevenLabs Potential causes: Incorrect SIP credentials, firewall blocking ports, Static SIP not enabled Solution: Verify SIP username/password from Ozonetel, confirm ports 5060 (UDP/TCP) are open, ensure Static SIP is enabled by your FDE/AE

Inbound Calls Not Reaching the Agent

Problem: Inbound calls ring but ElevenLabs agent does not respond Potential causes: ElevenLabs UDP SIP server details not shared with Ozonetel, Migrate step not completed for all numbers Solution: Share the correct UDP SIP server details with Ozonetel; click Migrate for every Ozonetel number in your ElevenLabs dashboard

+91 Country Code Error

Problem: Phone number import fails or number is unrecognized Potential causes: Number entered with +91 prefix Solution: Remove the +91 prefix and enter the number as-is (e.g., 08011111112 )

Problem: Choppy or delayed audio during calls Potential causes: Network latency, bandwidth limitations, codec mismatches, insufficient Ozonetel channels Solution: Check network quality, verify codec settings, confirm you have enough channels for your concurrent call volume

Problem: AI agent fails to respond to customer input Potential causes: No agent assigned to the phone number, API limits exceeded, service disruption Solution: Confirm an agent is selected in the Agent dropdown for the number, check API usage limits, review service status

ElevenAgents

Integrations

Ozonetel

Connect Ozonetel to ElevenLabs Conversational AI Voice Agents

Run real-time AI voice agents at scale – purpose-built for India's contact center landscape with Ozonetel

Add Integration Contact sales

Setup time

10-15mins

Difficulty

Intermediate

Let your AI Voice Agents handle calls seamlessly with Ozonetel

Transform your Ozonetel telephony infrastructure into an intelligent voice platform with ElevenLabs Conversational AI. This integration enables your AI agents to handle both inbound and outbound calls across India with enterprise-grade reliability and real-time performance.

Built for India-based contact center deployments, this integration provides the low-latency, controllable voice AI solution you need to scale conversations without scaling headcount. Your existing Ozonetel SIP trunks and DIDs work immediately — no migration required.

Key capabilities:

Real-time voice processing with low latency for natural conversations
Bidirectional call support for comprehensive inbound and outbound automation
India-compliant setup via ElevenLabs IN residency account (required per TRAI regulations)
Plug-and-play SIP trunk setup using your existing Ozonetel SIP credentials
Scalable concurrency — add channels from Ozonetel to match your concurrent call requirements

What problems it solves:

Eliminates the need to hire and scale customer service teams for Indian contact centers
Reduces operational costs while maintaining 24/7 availability
Provides consistent, high-quality customer experiences across all inbound and outbound interactions
Enables rapid scaling of voice capabilities — each concurrent call requires one Ozonetel channel

Features

Integrations features

Everything your AI voice agents need for production-ready call handling in India

Low-Latency Voice Processing

Sub-200ms response times for natural conversation flow
Real-time audio streaming with minimal buffering
Optimized for interactive voice applications requiring immediate responses

Bidirectional Call Support

Handle inbound customer calls with intelligent routing via Ozonetel DIDs
Initiate outbound calls for proactive customer engagement
Seamless handoff between AI and human agents when needed

Secure SIP Integration

Direct SIP trunk connectivity with Ozonetel's cloud infrastructure
Registration-based SIP trunk with username/password authentication
TCP transport support for outbound; UDP (Static SIP) for inbound ElevenLabs server

India Compliant Infrastructure

Requires ElevenLabs IN residency account in line with TRAI regulations
Hosted on ElevenLabs' India-residency servers (in.residency.elevenlabs.io)
Supports Indian DIDs/CLIs procured through Ozonetel's KYC process

Scalable Concurrency

Concurrency scales linearly: 1 Ozonetel channel = 1 concurrent call
Example: 20 concurrent calls require 20 channels from Ozonetel
Contact your ElevenLabs AE/Success Manager to align concurrency limits

Installation

Installation guides

Get your AI voice agents connected to Ozonetel in under 30 minutes

Before you begin, make sure you have:

From Ozonetel:

An active Ozonetel account (contract + KYC completed)
SIP Domain (e.g., sip2.cloud-connect.in:7065)
Assigned DIDs / CLIs / Phone Numbers
SIP username and password (for registration-based SIP trunk)
Admin credentials and Admin Login URL (e.g., crm2.cloud-connect.in)
Sufficient channels procured (1 channel per concurrent call)

From ElevenLabs:

An ElevenLabs IN residency account (Contact your account manager to help with this)
Static SIP enabled on your workspace (request via your AE/FDE)
A configured ElevenLabs AI agent to assign to the phone number

Troubleshooting

Troubleshooting & support

Common issues, solutions, and support resources for your integration

Contact support

Other resources

Ozonetel Cloud Connect ElevenLabs Conversational AI Docs ElevenLabs IN Residency Account Integration API Reference ElevenLabs Quickstart Guide ElevenLabs Discord

Ozonetel

https://ozonetel.com/