📍 Call Soft Corporation: Certified Asterisk VoIP Engineers Stationed in Sector 69 Noida • 60km Onsite SLA
Home > Asterisk & Open-Source IP-PBX Solutions
Asterisk • FreePBX • Vicidial • GoAutoDial • Elastix • Issabel

Enterprise SIP Telephony & Call Center Dialer Engineering

Stop paying expensive recurring proprietary license fees. We deploy rock-solid open-source Asterisk IP-PBX infrastructure for business offices, call centers, and multi-branch enterprises across Noida and a 60-kilometer radius.

✓ Full FreePBX, Vicidial, GoAutoDial, Elastix, Issabel & OSDial Mastery
✓ Telecom SIP Trunk Interconnect: Tata Tele, Airtel, Jio & Vodafone Idea
✓ Advanced Inbound IVR, Auto-Attendant, Call Recording & WebRTC Softphones
✓ Emergency 2-to-4 Hour Onsite SLA within 60 KM of Sector 69 Noida

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Certified PBX Engineers • Rapid Onsite visits across Noida & 60km NCR

Open Source PBX Stack

Platforms We Install, Tune & Maintain

From 5-person start-ups to 500-seat 24/7 international call centers.

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FreePBX Unified Phone System

The world's most deployed GUI for Asterisk. We build rock-solid corporate telephony architectures with zero recurring seat licenses.

  • • Multi-level Interactive Voice Response (IVR)
  • • Voicemail to Email & Call Follow-Me
  • • Call Detail Records (CDR) & Call Recording
  • • Tata, Airtel, Jio SIP Trunk NAT configuration
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Vicidial Call Center Suite

The industry standard predictive dialer for BPO operations. Maximize agent talk time and manage inbound/outbound customer queues.

  • • Predictive, Ratio, Broadcast & Manual dialing
  • • WebRTC Browser Agent Phone (No softphone app needed)
  • • Live supervisor monitoring, barge-in & whispering
  • • Custom lead recycling & DNC list filtering
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GoAutoDial Multi-Channel Dialer

User-friendly, modern responsive web interface built on Asterisk. Ideal for fast-growing sales teams needing intuitive dashboards.

  • • HTML5 browser-based responsive interface
  • • Inbound & outbound telephony campaigns
  • • Integrated ticketing & lightweight CRM
  • • Audio recording archive with search & export
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Issabel Unified Communications

Modern successor to Elastix. Provides voice, video, fax, and email in one cohesive platform with reinforced security protocols.

  • • Built-in firewall & Fail2Ban security protection
  • • WebRTC softphone & video conferencing
  • • Call center addon module for basic call queues
  • • Fast migration from aging Elastix 2.x/4.x installations
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Elastix Legacy PBX Migration

Is your old Elastix server crashing, vulnerable to SIP toll fraud, or unsupported? We migrate your existing dialplans, trunks, and extensions safely.

  • • Zero-downtime database & audio prompt backup
  • • Hardware upgrades & SSD migration
  • • Security audit against brute-force attacks
  • • Compatibility with modern Grandstream & Yealink IP phones
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OSDial & Custom Asterisk Dialplans

Need custom AGI scripts, database lookups before routing, CRM screen-pops, or specialized telecom dialplan routing in Asterisk?

  • • Asterisk 18 & 20 LTS custom configuration
  • • Dynamic IVR connected to MySQL/PostgreSQL/REST API
  • • Multi-tenant PBX design & CDR billing modules
  • • SIP Trunk load balancing & failover switching
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Telecom Connectivity

SIP Trunk & PRI Interconnect Services

We configure and terminate SIP trunks from India's leading Class-A telecom operators directly into your Asterisk PBX.

Tata Teleservices

Smartflo & Tata SIP Trunk configuration with secure IP authorization and private leased line termination.

Airtel Business

Airtel Corporate SIP trunk integration, multiple DIDs mapping, and high-concurrency channel testing.

Reliance Jio

Jio Business Enterprise SIP trunk integration with crystal-clear G.711 / Opus voice codecs.

Vodafone Idea (Vi)

Vi Corporate SIP trunking, PRI to SIP gateway conversion, and outbound dialer capacity scaling.

Need Annual Maintenance (AMC) for your Office PBX?

Guaranteed 2-to-4 hour onsite response across Noida, Greater Noida, Ghaziabad, Delhi, Faridabad & Gurugram.

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