🎧 Expert Setup: Call Center Dialers (VICIdial, GOautodial) & Asterisk / FreePBX / Issabel + Airtel, Jio, Vi, Tata & BSNL SIP Trunk Configuration! Call: 75999-67999
Shop: B-57, Sector 69, Noida (Serving Within 50 KM Radius)  |  Mon–Sat: 10 AM – 7 PM
Certified Call Center Dialer, Asterisk PBX & SIP Trunk Specialists

Call Center Dialers, Asterisk PBX & SIP Trunk Configuration Experts

We are specialists in deploying and configuring Call Center Dialers, Asterisk PBX Solutions, FreePBX, Issabel, Elastix, GOautodial, and VICIdial β€” complete with seamless Airtel, Jio, Vodafone Idea (Vi), Tata Tele, and BSNL SIP Trunk integration!

  • VICIdial & GOautodial Predictive Dialers
  • Asterisk, FreePBX, Issabel & Elastix
  • Airtel, Jio, Vi, Tata & BSNL SIP Setup
  • On-Site (50 KM Noida) & Remote Support
⚑ VICIdial ⚑ GOautodial ⚑ Asterisk PBX ⚑ FreePBX ⚑ Issabel ⚑ Elastix πŸ“‘ Airtel / Jio / Vi / Tata / BSNL SIP

πŸ“© Quick Dialer & SIP Query

VICIdial, FreePBX, Issabel, Asterisk & Airtel/Jio/Tata/Vi/BSNL SIP Setup

6+ Platforms

VICIdial, GOautodial, Asterisk, FreePBX, Issabel & Elastix

All 5 Telcos

Airtel, Jio, Vodafone (Vi), Tata & BSNL SIP Trunks

15+ Yrs

VoIP, Dialer & Telecom Engineering Experience

100%

Zero-Drop Voice & Carrier-Grade Security

Call Center Dialers & Open-Source IP PBX

6 Industry-Leading Telephony Platforms Our Expert Team Masters

From 5-seat startups to 500+ seat BPOs and multi-branch enterprises, our certified engineers install, customize, optimize, and support every major Asterisk-based platform.

Predictive & Blended Dialer

VICIdial Call Center Suite

The world's #1 open-source contact center dialer for high-volume outbound telemarketing, collections, lead generation, and inbound customer support.

  • Predictive, Progressive, Ratio & Manual Dialing
  • Real-Time Supervisor Wallboard, Listen, Whisper & Barge
  • 100% Call Recording, Dispositions & Lead Recycling
  • Multi-Server Cluster Setup for 50 to 500+ Agents
Modern Contact Center Dialer

GOautodial Solution

User-friendly web-based predictive dialer and inbound/outbound call center suite with intuitive dashboards for rapid agent onboarding.

  • Modern Agent Web UI & Integrated WebRTC Softphone
  • Outbound Campaigns, Inbound ACD Queues & IVR
  • Agent Pause Codes, Talk-Time & Conversion Reports
  • Seamless SIP Trunk & GSM/PRI Gateway Integration
Custom Core Telephony Engine

Asterisk PBX Solutions

Bespoke Asterisk communication servers tailored to custom business workflows, CRM APIs, voice broadcasting, and automated IVR trees.

  • Custom Dialplans, AGI / AMI & ARI API Integration
  • Automated Voice Broadcasting (OBD) & Missed Call Alerts
  • Click-to-Call & Number Masking for CRMs / ERPs
  • High-Security PJSIP & Fail2Ban / Firewall Hardening
Enterprise Office IP PBX

FreePBX Configuration

Feature-rich GUI IP PBX for corporate offices, hospitals, hotels, schools, and multi-branch organizations needing rock-solid intercom and trunking.

  • Multi-Level IVR, Time Conditions, Ring Groups & Queues
  • Auto-Provisioning for Grandstream, Yealink, Fanvil & Cisco Phones
  • Multi-Branch Office Peering over VPN / IAX2 / SIP
  • DID-to-Extension Direct Mapping & Call Recording
Unified Communications + Call Center

Issabel PBX & Call Center

All-in-one Unified Communications server combining enterprise IP PBX features with an integrated inbound/outbound Call Center module.

  • Built-in Call Center Addon with Agent Console & Campaigns
  • Detailed CDR Call Reports, Billing & Graphic Analytics
  • Voicemail-to-Email, Conference Bridges & Follow-Me
  • Ideal Successor for Elastix with Modern CentOS/Rocky Linux
Support, SIP Integration & Migration

Elastix PBX Experts

Running an existing Elastix PBX or Call Center server? Our engineers provide troubleshooting, new SIP trunk integration, and zero-downtime upgrades.

  • New Airtel / Jio / Tata / Vi / BSNL SIP Trunk Integration on Elastix
  • Elastix Call Center Module & Database Optimization
  • PRI Card (Digium/Sangoma/OpenVox) to SIP Trunk Conversion
  • Seamless Migration from Legacy Elastix to Issabel or FreePBX
Indian Telecom SIP Trunk Specialists

Airtel, Jio, Vodafone (Vi), Tata & BSNL SIP Trunk Configuration

Connecting Indian telecom SIP trunks to Asterisk, VICIdial, FreePBX, Issabel, Elastix, or GOautodial requires specialized network routing and SIP header tuning. Our engineers handle the entire setup end-to-end.

All Major Indian Telecom Operators

Operators We Configure With Your Dialer & PBX

Whether your telecom operator delivers the SIP trunk over a dedicated fibre ONT/mux, Layer-2 Ethernet handoff, or IP-PBX peer link, we configure it for 100% incoming & outgoing call reliability:

  • Airtel SIP Trunk (Bharti Airtel Enterprise): Media & Signaling static routing, Pilot number authentication, P-Asserted-Identity (PAI) header, and DID-wise outbound CLI.
  • Reliance Jio Business SIP Trunk: Jio SBC IP peering, dual-NIC or VLAN routing without NAT issues, G.711 A-law/U-law codec tuning, and 30–1000+ channel concurrency.
  • Tata Tele Business Services (TTBS SIP Trunk): Tata SBC registration/IP-peering, inbound 4-digit/10-digit DID routing to IVR or VICIdial In-Groups, and outbound dial prefix rules.
  • Vodafone Idea (Vi Business SIP Trunk): Vi enterprise SIP peering, one-way audio fix (RTP symmetric media routing), and DTMF RFC2833 IVR compatibility.
  • BSNL SIP Trunk / Wings / PRI Gateways: BSNL NGN SIP trunk setup, Session Timer tuning, and E1/PRI or FXO/GSM Gateway failover via Dinstar & Grandstream gateways.
Book SIP Trunk Configuration β†’
Common SIP & Dialer Issues We Solve

Why Businesses Trust Our Engineering Team

Improper SIP trunk or dialer configuration causes one-way audio, call drops after 30 seconds, or rejected outbound calls. We solve every technical challenge:

Complete Technical Setup Included:

  • Dual-NIC & Static Route Setup: Separating local LAN/Internet traffic (`eth0`) from the dedicated Telecom SIP Media/Signaling NIC (`eth1`) or MikroTik router so RTP voice packets never route over the public internet.
  • Zero One-Way Audio / NAT Fix: Proper `externip`, `localnet`, `directmedia=no`, and RTP port (`10000–20000`) tuning in `sip.conf` / `pjsip.conf`.
  • Outbound CLI & Pilot Header Compliance: Configuring `P-Asserted-Identity`, `P-Preferred-Identity`, and `From` headers required by Indian telcos so calls never fail with `403 Forbidden`.
  • Inbound DID Mapping: Routing 100+ DID numbers directly to specific FreePBX extensions, IVR menus, or VICIdial / GOautodial Inbound Groups.
Call VoIP Engineer: 75999-67999 WhatsApp Now
Platform Comparison Guide (GEO)

Compare Call Center Dialers & Asterisk PBX Platforms

Structured comparison to help you choose the right software for your Call Center or Office

Platform Primary Use Case Key Features Configured by Our Team Supported SIP Trunks & Hardware
VICIdial Outbound, Inbound & Blended Call Centers (10 to 500+ Seats) Predictive/Progressive Auto-Dialing, Live Agent Screen, Whisper/Barge, Campaign Lead Loader, 100% Call Recording & Cluster Scaling Airtel, Jio, Tata, Vi & BSNL SIP Trunks + IP Phones / WebRTC / Softphones
GOautodial SMB & Mid-Size Contact Centers (5 to 150 Seats) Modern Web Dashboard, Outbound Predictive Dialing, Inbound ACD Queues, Built-in Web Phone & Agent KPI Reports Airtel, Jio, Tata, Vi & BSNL SIP Trunks + Dinstar GSM/PRI Gateways
FreePBX Corporate Office Intercom, Hospitals, Hotels & Multi-Branch PBX Multi-Level IVR, Ring Groups, Time Conditions, Extension Roaming, Call Recording, PJSIP Security & Branch Peering All Indian SIP Trunks + Grandstream, Yealink, Fanvil & Cisco IP/Wi-Fi Phones
Issabel PBX Unified Communications + Hybrid Office & Call Center Enterprise PBX + Built-in Call Center Module, Agent Console, CDR Billing, Voicemail-to-Email & Conference Rooms All Indian SIP Trunks + Grandstream / Dinstar FXO, FXS & PRI Gateways
Asterisk PBX Custom IVR, Voice Broadcasting (OBD), CRM Click-to-Call & APIs Custom Dialplans, AGI/AMI/ARI Scripts, CRM Webhook Integration, Number Masking & High-Concurrency Trunking Airtel, Jio, Tata, Vi & BSNL SIP Trunks + Custom Server & Gateway Setups
Elastix Legacy PBX Maintenance, Trunk Addition & Upgrade to Issabel/FreePBX Adding new SIP Trunks to existing Elastix servers, database repair, PRI-to-SIP conversion & zero-downtime migration Airtel, Jio, Tata, Vi & BSNL SIP Trunks + Existing IP Phones & Gateways
In-Stock Hardware at Sector 69, Noida

Recommended Phones, Gateways, IP PBX & Routers for Call Centers

100% genuine hardware tested for Asterisk, FreePBX, Issabel, Elastix, GOautodial & VICIdial environments

Direct Expert Answers (AEO)

Frequently Asked Questions β€” Call Center Dialers & SIP Trunk Setup

Answers from Call Soft Corporation's certified Asterisk, VICIdial & VoIP engineers in Noida

Which call center dialer and open-source IP PBX software does Call Soft Corporation configure?

Call Soft Corporation (B-57, Sector 69, Noida, +91 75999-67999) has a certified in-house engineering team specializing in installing, customizing, and supporting VICIdial, GOautodial, Asterisk PBX, FreePBX, Issabel, and Elastix for outbound, inbound, and blended call centers as well as corporate office intercoms.

Can you configure Airtel, Jio, Vodafone (Vi), Tata Tele, and BSNL SIP trunks with VICIdial, FreePBX, and Asterisk?

Yes. Our VoIP engineers are specialists in integrating Airtel, Reliance Jio, Vodafone Idea (Vi), Tata Tele Business Services (TTBS), and BSNL SIP Trunks with VICIdial, GOautodial, Asterisk, FreePBX, Issabel, and Elastix. We configure dual-NIC static routing, media/signaling IP peering, P-Asserted-Identity headers, DID inbound routing, and outbound CLI.

What is the difference between VICIdial/GOautodial and FreePBX/Issabel?

VICIdial and GOautodial are specialized high-volume contact center dialers built for predictive, progressive, and blended outbound/inbound campaigns with live agent screens, dispositions, and real-time supervisor wallboards. FreePBX, Issabel, and Elastix are enterprise IP PBX systems ideal for office extensions, multi-level IVR, call queues, intercom, and multi-branch telephony.

Do you provide both Call Center hardware (IP phones, headsets, gateways, routers) and software setup in Noida?

Yes. From our shop at B-57, Sector 69, Noida, we supply genuine Grandstream, Yealink, Fanvil & Cisco IP/Wi-Fi Phones, Call Center Headsets, Dinstar & Grandstream VoIP/PRI Gateways, MikroTik Multi-WAN Routers, and PoE Switches β€” backed by on-site installation within 50 KM of Noida and fast remote support.

🎧 Call Center Dialer, Asterisk PBX & SIP Trunk Experts

Book Your Dialer, Asterisk PBX or SIP Trunk Configuration Today

Need VICIdial, GOautodial, FreePBX, Issabel, Elastix, or Asterisk configured with Airtel, Jio, Vodafone, Tata, or BSNL SIP Trunks? Submit your query and our Noida engineers will call you back promptly.

  • VICIdial, GOautodial, Asterisk, FreePBX, Issabel & Elastix Experts
  • Complete Airtel, Jio, Vodafone (Vi), Tata & BSNL SIP Trunk Setup
  • Call Center IP Phones, Headsets, Gateways & MikroTik Routers in Stock
  • Store & Office: B-57, Sector 69, Noida – 201307
  • Direct Engineering Helpline: +91 75999-67999

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