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Programming & Development Telephony / Telecommunications

VoIP solution using FreeSWITCH Asterisk

$50/hr Starting at $500

With over 17 years of expertise in the telecom and software engineering industries, I specialize in delivering tailored call center systems and auto-dialer solutions. Combining the power of FreeSWITCH, FusionPBX, and Asterisk, along with advanced Lua scripting, I create robust, scalable, and efficient communication systems designed specifically for your business needs.

 Telephony and VoIP Solutions

- IP PBX Systems: Asterisk, FreePBX, Elastix, PBXware, FreeSWITCH, FusionPBX, Issabel, VoIPOffice, 3CX, Vital PBX

- Dialers: VICIDial, GoAutoDial, VoiceBroadcast, Primo Dialer, Dialer360, VICIBox Multi-Server Clustering, custom dialer.

- SIP Trunking Providers: Twilio, VoIP.ms, Telnyx, Anveo, SignalWire, Bandwidth.com, Plivo, Nexmo, Flowroute, Voxbeam, Skyetel

-SMS/Bulk SMS: Integration with providers such as SignalWire, Twilio, Telnyx, Bandwidth.com, VoIP.ms for SMS sending and receiving

-Telecom Billing Systems: A2Billing, ASTPP, Yeti, VOS3000, Magnus Billing

- IP Phones & Hardware: Yealink, Cisco, Polycom, Grandstream, AudioCodes, Snom, Panasonic, Sangoma PBXact UC, OpenVox

Networking and Systems Administration

- Linux Distributions: CentOS, Ubuntu, Red Hat EL, Debian, OpenSUSE.

- Cloud Platforms: AWS, GCP, Vultr, DigitalOcean, Hetzner, BlueHost

- Hypervisors: VMware ESXi, VirtualBox, ProxMox, HyperV, 

- Scripting Languages: Python, Bash, PHP

- Automation Tools: Zabbix (for monitoring), system backups, VoIP troubleshooting and system optimisation

- VoIP and Telecom Expertise: PBXware, Bicom System, Genesys Cloud, Alcatel-Lucent OXE, Alcatel, Cisco, 3CX

- Telecom Integration & Development: Bitrix24 Integration, Twilio API, BulkSMS, SIP Protocol Integration

What I Offer:

1️⃣ Custom Call Center Solutions

Multi-tenant configurations

Skill-based routing and queue management

IVR (Interactive Voice Response) with dynamic menus

2️⃣ Advanced Auto-Dialer Systems

Predictive, progressive, and power dialers

Voicemail drop, call recording, and analytics

CRM integration (Salesforce, Zoho, HubSpot)

3️⃣ Asterisk PBX Customization

Dialplan scripting and AGI development

Real-time call monitoring and reporting

SIP trunk integration and channel management

4️⃣ FreeSWITCH & FusionPBX Solutions

Multi-tenant deployments

SIP trunking and advanced gateway setups

Custom Lua scripting for unique workflows

5️⃣ API & Third-Party Integrations

Integration with CRMs, ticketing systems, and analytics platforms

REST API development for seamless automation

WebRTC solutions for browser-based calling.

Why Choose Me?

✔️ Extensive experience with Asterisk, FreeSWITCH, and FusionPBX

✔️ Expertise in Lua scripting and custom dial plan design

✔️ Proven track record of building scalable and secure telephony solutions

✔️ Strong focus on business goals, performance, and usability

✔️ Transparent communication and client-focused approach 

Recent Projects:

✅ Auto-Dialer for a Real Estate Agency

✅ Multi-Channel Call Center for Doctors 

✅ Customized Asterisk Deployment for 

✅ FusionPBX Module for Multi-Tenant Businesses

About

$50/hr Ongoing

Download Resume

With over 17 years of expertise in the telecom and software engineering industries, I specialize in delivering tailored call center systems and auto-dialer solutions. Combining the power of FreeSWITCH, FusionPBX, and Asterisk, along with advanced Lua scripting, I create robust, scalable, and efficient communication systems designed specifically for your business needs.

 Telephony and VoIP Solutions

- IP PBX Systems: Asterisk, FreePBX, Elastix, PBXware, FreeSWITCH, FusionPBX, Issabel, VoIPOffice, 3CX, Vital PBX

- Dialers: VICIDial, GoAutoDial, VoiceBroadcast, Primo Dialer, Dialer360, VICIBox Multi-Server Clustering, custom dialer.

- SIP Trunking Providers: Twilio, VoIP.ms, Telnyx, Anveo, SignalWire, Bandwidth.com, Plivo, Nexmo, Flowroute, Voxbeam, Skyetel

-SMS/Bulk SMS: Integration with providers such as SignalWire, Twilio, Telnyx, Bandwidth.com, VoIP.ms for SMS sending and receiving

-Telecom Billing Systems: A2Billing, ASTPP, Yeti, VOS3000, Magnus Billing

- IP Phones & Hardware: Yealink, Cisco, Polycom, Grandstream, AudioCodes, Snom, Panasonic, Sangoma PBXact UC, OpenVox

Networking and Systems Administration

- Linux Distributions: CentOS, Ubuntu, Red Hat EL, Debian, OpenSUSE.

- Cloud Platforms: AWS, GCP, Vultr, DigitalOcean, Hetzner, BlueHost

- Hypervisors: VMware ESXi, VirtualBox, ProxMox, HyperV, 

- Scripting Languages: Python, Bash, PHP

- Automation Tools: Zabbix (for monitoring), system backups, VoIP troubleshooting and system optimisation

- VoIP and Telecom Expertise: PBXware, Bicom System, Genesys Cloud, Alcatel-Lucent OXE, Alcatel, Cisco, 3CX

- Telecom Integration & Development: Bitrix24 Integration, Twilio API, BulkSMS, SIP Protocol Integration

What I Offer:

1️⃣ Custom Call Center Solutions

Multi-tenant configurations

Skill-based routing and queue management

IVR (Interactive Voice Response) with dynamic menus

2️⃣ Advanced Auto-Dialer Systems

Predictive, progressive, and power dialers

Voicemail drop, call recording, and analytics

CRM integration (Salesforce, Zoho, HubSpot)

3️⃣ Asterisk PBX Customization

Dialplan scripting and AGI development

Real-time call monitoring and reporting

SIP trunk integration and channel management

4️⃣ FreeSWITCH & FusionPBX Solutions

Multi-tenant deployments

SIP trunking and advanced gateway setups

Custom Lua scripting for unique workflows

5️⃣ API & Third-Party Integrations

Integration with CRMs, ticketing systems, and analytics platforms

REST API development for seamless automation

WebRTC solutions for browser-based calling.

Why Choose Me?

✔️ Extensive experience with Asterisk, FreeSWITCH, and FusionPBX

✔️ Expertise in Lua scripting and custom dial plan design

✔️ Proven track record of building scalable and secure telephony solutions

✔️ Strong focus on business goals, performance, and usability

✔️ Transparent communication and client-focused approach 

Recent Projects:

✅ Auto-Dialer for a Real Estate Agency

✅ Multi-Channel Call Center for Doctors 

✅ Customized Asterisk Deployment for 

✅ FusionPBX Module for Multi-Tenant Businesses

Skills & Expertise

A2BillingAsteriskAvayaFreeSWITCHInteractive Voice ResponseOpenSIPSTelecommunications SystemsTelephonyVoIP

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