I will connect your sip trunk, telephone number to ai voice agent


Level 2
About this gig
Need a smart AI voice or chat assistant that understands, responds, and automates your business processes?
I build end-to-end AI agent systems using:
LLMs
- OpenAI GPT-4o / 5
- Google Gemini
- Open-source models (LLaMA, Mistral, Qwen, Mixtral, etc.)
Voice Tech
- ElevenLabs (TTS)
- Coqui or Piper (OSS TTS)
- Deepgram / Whisper (STT Real-time)
Agent Frameworks
- Rasa
- LangChain
- Node.js / Python custom pipelines
- Real-time WebSocket and streaming architecture
What I Deliver
- Fully working AI Voice Agent (phone, WebRTC, IVR, SIP)
- Chat agent for web, WhatsApp, Messenger, Telegram
- Intent recognition + entity extraction
- Memory, session handling, tools/functions
- Real-time call handling with natural AI speech
- Integrations with CRM, API, database
- Multilingual + multilingual voice
- Custom knowledge base using PDFs / text / websites
Technical Features
- WebSocket STT/TTS streaming
- Phone call handling (Asterisk, FreePBX, Twilio, SIP)
- Realtime GPT responses under 500ms
- Voice interruption (barge-in)
- Lead collection (name, phone, email)
- Order placement, appointment booking
- Custom flow logic or fully autonomous agent
- Custom Node.js & Python pipelines
- Asterisk/Twilio SIP call integration
- WebRTC browser voice agents
Get to know Syed
Profesional AiVoiceBot, SIP, VoIP, Asterisk, Linux, Cloud Engineering
Level 2
- FromBangladesh
- Member sinceFeb 2016
- Avg. response time1 hour
- Last delivery5 days
Languages
Bengali, English
FAQ
What technologies do you use to build the AI agents?
I work with OpenAI (GPT-4o/5), Google Gemini, Rasa, LangChain, Deepgram, Whisper, ElevenLabs, and open-source LLMs like LLaMA, Mixtral, Mistral, Qwen, depending on your performance and budget.
Can you build a real-time voice agent for phone calls?
Yes. I support Asterisk, FreePBX, SIP, Twilio, WebRTC, and full real-time STT/TTS streaming with barge-in (interruptible speech).
Can the agent integrate with my CRM or API?
Absolutely. I integrate through REST APIs, Webhooks, JSON, SQL, Firebase, MongoDB, PostgreSQL, or your custom endpoints.
Can I upload my documents to train the AI?
Yes. I support RAG (Retrieval-Augmented Generation) using PDFs, text files, websites, product manuals, or support docs.
Does the voice agent support multiple languages?
Yes — both STT and TTS support over 30 languages and accents through Deepgram + ElevenLabs.
Can you deploy the full system on my server?
Yes. I offer Docker deployment, VPS setup, API hosting, and long-term scalability planning.
Can you create custom business flows?
Yes — lead qualification, appointment booking, sales funnels, helpdesk flows, technical support, or fully autonomous agents.
Do you offer long-term maintenance?
Yes. Monthly or hourly support plans are available.
3 reviews for this Gig
| (3) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
J jessquintana520
Repeat Client

Spain
Very well, works very well
$2,000-$3,000
Price
2 weeks
Duration
Helpful?S snowman_studios

United Arab Emirates
Fantastic work from Syed, he clearly understood my requirements and was able to execute seamlessly on it! Can only recommend him if you have any troubles with asterisk, networking, or other PBX systems at all. He has a lot of knowledge in the telephony space internationally as well! Got great advice from him, and really appreciate his hard work!
$400-$600
Price
2 days
Duration
Helpful?J jotwjoea
Repeat Client

Spain
Perfect all with Syed! Many works done.
$200-$400
Price
5 days
Duration
Helpful?
3 reviews for this Gig
| (3) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
J jessquintana520
Repeat Client

Spain
Very well, works very well
$2,000-$3,000
Price
2 weeks
Duration
Helpful?S snowman_studios

United Arab Emirates
Fantastic work from Syed, he clearly understood my requirements and was able to execute seamlessly on it! Can only recommend him if you have any troubles with asterisk, networking, or other PBX systems at all. He has a lot of knowledge in the telephony space internationally as well! Got great advice from him, and really appreciate his hard work!
$400-$600
Price
2 days
Duration
Helpful?J jotwjoea
Repeat Client

Spain
Perfect all with Syed! Many works done.
$200-$400
Price
5 days
Duration
Helpful?

