Need freelancer for VoIP SIP Server

We are seeking an experienced professional to set up a SIP server with an integrated billing solution. · Configuring routes and enabling extension-based calling for our communication infrastructure. · ...

We are building a high-volume AI voice agent platform for call centers and looking for an experienced SIP / VoIP engineer to design and configure production-ready SIP server.Most of our target call centers do not use Twilio. · ...

+We are building a custom AI voice agent platform and need an experienced engineer to integrate Jambonz with our WebSocket-based voice agent. · ++Set up Jambonz end-to-end/li>Configure SIP trunks provided by clients/li>Enable outbound calling at scale (100+ concurrent calls)/li>/ ...

We are looking for a hands-on telecom specialist to complete the setup and stabilization of a GSM gateway connected to a SIP server. · ...

I have an Issabel VoIP server running as a virtual machine on VMware ESXi. I need to configure a secondary internet gateway for outbound internet traffic only while keeping all SIP/VoIP traffic routed via the existing SIP gateway. · ...

We need to upgrade the SSL Certificate on one of our Audiocode SBCs running on a virtual server on-premise (vmware). · ...

We are looking for an experienced OpenSIPS developer to help debug fix and optimize an existing OpenSIPS setup used in a WebRTC-to-SIP gateway architecture. · ...

We are building a production-grade AI voice bot platform and are looking for an experienced Telephony / VoIP / SIP Engineer to design and implement the server layer that connects our AI system with external call centers and VoIP providers. · Mandatory skills: Telephony, OpenSIPS, ...

We are looking for an experienced Asterisk / FreePBX engineer to install and configure Asterisk and FreePBX on an Ubuntu server. · Install and configure Asterisk · Install and configure FreePBX · ...

+We're looking for an experienced DevOps / VoIP Engineer to finalize and stabilize our VoIP setup on a Vultr VPS. · +Strong Linux & DevOps skills · Proven FreePBX / VoIP experience · SIP, RTP, firewall, DNS knowledge · +Mandatory skills.dopost{font-size:16px}<![CDATA[<span class= ...

I need a VoIP technician to help me register my OBi202 (ATA) with my Callcentric account. · ...

We are looking for a skilled developer with extensive experience in OpenSIPS or Asterisk to join our team. · The ideal candidate should have a strong understanding of SIP protocols and VoIP technologies to help us develop and optimize our communication systems.Configuring servers ...

I have a small CUCM 12.5 demo lab with about 5–6 devices.The lab is used for a recording application and supports simple internal calling only.No PSTN calls and no outbound routing. · Copy the configurations from CUCM 12.5 to CUCM 15.0 · ...

We are looking for a highly experienced WebRTC / Asterisk engineer to build a complete end-to-end VoIP system from scratch.Please apply only if you are fully confident you can deliver. · ...

We are looking for a highly experienced freelancer with proven production experience working with Yeti Switch and Ruby on Rails. · ...

We are looking for an experienced VoIP engineer to design guide and help set up a scalable outbound voice system. · Design a carrier-grade voice architecture · Kamailio SIP proxy security rate limiting Asterisk media server WebRTC call handling Integrate WebRTC calling for web mo ...

+We are looking for an experienced VoIP engineer to design guide and help set up a scalable outbound voice system. · +Design a carrier-grade voice architecture · Set up and configure Kamailio (SIP proxy security rate limiting) · Set up and configure Asterisk (media server WebRTC ...

I am looking for an experienced Asterisk / VoIP engineer to configure an Asterisk PBX on a VPS with integration of an external AMD (Answering Machine Detection) service such as or a similar solution. · ...

I am looking for an experienced VoIP engineer to deploy a Single Node (All-in-One) 2600Hz Kazoo infrastructure on a Proxmox virtualization environment. · ...

We are building production-grade voice-based conversational AI solutions for business automation.The goal is to achieve a stable, working inbound call flow where calls reach the AI agent correctly. · ...