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Asterisk Development

The Asterisk Development course by Sangoma equips developers and systems administrators with practical skills to build, configure, and troubleshoot custom VoIP solutions using the open-source Asterisk framework. Designed for IT professionals managing enterprise communications, it solves the critical challenge of deploying cost-effective, scalable telephony systems amid growing demand—over 1 million organizations globally use Asterisk. Learners gain hands-on expertise in dial plans, SIP/IAX protocols, call queues, and integration with databases and external APIs.

This course prepares you for the Digium Certified Asterisk Professional (dCAP) certification, validating advanced competency in Asterisk deployment. Koenig Solutions offers official vendor-authorized courseware with Guaranteed-to-Run dates and 30-day lab access, ensuring flexible, hands-on practice. Master Asterisk development to design innovative communication systems and advance into high-impact roles like VoIP architect or unified communications engineer.

24 Hours (3 Days)
Live Online / Classroom
6+ professionals trained

Training Formats & Pricing

1-on-1 On Request
Dedicated instructor, your schedule
Available in all languages
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Public Batch On Request
Group class, fixed schedule
Available in all languages
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Course Overview

The Sangoma Asterisk Development course is a comprehensive training program designed for IT professionals, VoIP engineers, and telecommunications developers seeking to master the open-source Asterisk framework. This course prepares candidates for the Digium-Certified Asterisk Professional (dCAP) certification, a respected industry credential validating advanced expertise in Asterisk deployment and management. Targeted at roles such as Asterisk Developer, VoIP Systems Administrator, and Unified Communications Engineer, the training equips learners with the skills to design, build, and maintain enterprise-grade telephony solutions. With over one million Asterisk-powered systems deployed globally, including by major service providers and enterprises, demand for certified professionals continues to grow as organizations adopt customizable, cost-effective communication platforms.

Participants engage with core technologies including the Asterisk dialplan, SIP and IAX protocols, AMI (Asterisk Manager Interface), AGI (Asterisk Gateway Interface), MySQL integration, and Linux-based system security. The course features extensive hands-on labs conducted in a live Linux environment where students configure real-world telephony systems from the ground up. Learners build advanced dial plans, implement call queues and ACD systems, integrate external databases, and develop custom telephony applications using AGI scripts. A key project involves constructing a fully functional IVR system with call routing, voicemail, and call recording capabilities, simulating enterprise deployment scenarios. These practical exercises ensure developers gain confidence in troubleshooting, monitoring, and securing Asterisk-based solutions in production environments.

By completing the Sangoma Asterisk Development course, professionals are well-prepared for the dCAP certification, recognized across the telecommunications industry as a benchmark for advanced Asterisk proficiency. Certified developers can expect competitive compensation, with mid-level roles averaging $80–$120 per hour and senior positions commanding over $150 hourly in consulting roles. Koenig Solutions enhances this learning path with Guaranteed-to-Run batches, official Sangoma courseware, and access to 1-on-1 instructor support, ensuring personalized guidance. Graduates emerge ready to lead Asterisk implementation projects, drive innovation in UCaaS platforms, and advance into leadership roles such as AVP of Telecommunications or Senior VoIP Architect.

Skills You'll Gain

Asterisk CLI Asterisk Dial Plan SIP Protocol Configuration VoIP System Administration Asterisk PBX Configuration Asterisk IVR Development Call Routing Logic Asterisk Voicemail Setup SIP Trunking Asterisk Conference Bridges Asterisk Module Development Asterisk Security Hardening Asterisk Call Queues Asterisk CDR Management Asterisk Integration APIs Asterisk Realtime Architecture Asterisk High Availability

Prerequisites

Recommended knowledge before taking this course
  • Having Asterisk Certified Essentials or equivalent hands-on experience with Asterisk installation and administration is a key prerequisite for Sangoma’s Asterisk Development course. This practical knowledge ensures you understand core concepts, reducing onboarding time by 20%. Sangoma’s certification programs are recognized worldwide, validating your skills in deploying and managing Asterisk systems. With over 1 million Asterisk deployments globally, Sangoma’s expertise guarantees that your training is aligned with industry standards. Achieving this certification or experience prepares you to build secure, scalable VoIP solutions confidently. It also enhances your professional credibility, opening opportunities in enterprise telephony and unified communications. Completing this prerequisite ensures you maximize the benefits of Sangoma’s comprehensive Asterisk Development training.
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What's Included in Your Training

Every enrollment comes packed with resources to maximise your learning and exam success

Career Outcomes

82%

of Asterisk Development certified professionals report career advancement within 6 months

Salary Impact

+28%

Average salary increase reported after obtaining the Asterisk Development certification

Typical Salary Range (Global)
Entry$90,000–$115,000
Mid$115,000–$145,000
Senior$145,000–$180,000

*Source: Glassdoor / LinkedIn 2025

Job Roles

6
  • Asterisk Developer
  • VoIP Solutions Engineer
  • Senior Asterisk Engineer
  • Telecommunications Software Engineer
  • UCaaS Platform Developer
  • Lead VoIP Architect

Companies Hiring

5,000+
Sangoma Leidos IDT Corporation Cisco AT&T Verizon Accenture Deloitte Wipro Tata Communications

and 5,000+ organizations worldwide seeking Asterisk Development certified professionals

Real Transformations

Course Student Reviews

Real results from IT professionals who trained with Koenig — rated 4.9/5 from 18,400+ verified reviews.

18,400+
Verified Reviews
4.9 / 5
Average Rating
95%
Would Recommend
1M+
Professionals Trained
  • ★★★★★

    “Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”

    Rahul M.

    Rahul M.

    Azure Administrator

    AZ-104 Certified ✓ Verified
  • ★★★★★

    “I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”

    Sarah K.

    Sarah K.

    CISO, Financial Services

    Enterprise Client ✓ Verified
  • ★★★★★

    “The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”

    Ahmed R.

    Ahmed R.

    Business Intelligence Lead

    PL-300 Certified ✓ Verified
  • ★★★★★

    “From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”

    Priya S.

    Priya S.

    Cloud Solutions Architect

    AZ-305 Expert ✓ Verified
  • ★★★★★

    “As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”

    James T.

    James T.

    Head of L&D, UK Enterprise

    100+ Learners Trained ✓ Verified
  • ★★★★★

    “SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”

    Aisha N.

    Aisha N.

    Security Analyst

    SC-300 Certified ✓ Verified
  • ★★★★★

    “AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”

    David L.

    David L.

    AI Engineer

    AI-102 Certified ✓ Verified
  • ★★★★★

    “DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”

    Mei W.

    Mei W.

    Data Platform Engineer

    DP-600 Certified ✓ Verified
  • ★★★★★

    “Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”

    Carlos R.

    Carlos R.

    Engineering Manager

    AZ-400 Team Training ✓ Verified
  • ★★★★★

    “Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”

    Rahul M.

    Rahul M.

    Azure Administrator

    AZ-104 Certified ✓ Verified
  • ★★★★★

    “I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”

    Sarah K.

    Sarah K.

    CISO, Financial Services

    Enterprise Client ✓ Verified
  • ★★★★★

    “The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”

    Ahmed R.

    Ahmed R.

    Business Intelligence Lead

    PL-300 Certified ✓ Verified
  • ★★★★★

    “From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”

    Priya S.

    Priya S.

    Cloud Solutions Architect

    AZ-305 Expert ✓ Verified
  • ★★★★★

    “As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”

    James T.

    James T.

    Head of L&D, UK Enterprise

    100+ Learners Trained ✓ Verified
  • ★★★★★

    “SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”

    Aisha N.

    Aisha N.

    Security Analyst

    SC-300 Certified ✓ Verified
  • ★★★★★

    “AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”

    David L.

    David L.

    AI Engineer

    AI-102 Certified ✓ Verified
  • ★★★★★

    “DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”

    Mei W.

    Mei W.

    Data Platform Engineer

    DP-600 Certified ✓ Verified
  • ★★★★★

    “Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”

    Carlos R.

    Carlos R.

    Engineering Manager

    AZ-400 Team Training ✓ Verified
  • ★★★★★

    “Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”

    Rahul M.

    Rahul M.

    Azure Administrator

    AZ-104 Certified ✓ Verified
  • ★★★★★

    “I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”

    Sarah K.

    Sarah K.

    CISO, Financial Services

    Enterprise Client ✓ Verified
  • ★★★★★

    “The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”

    Ahmed R.

    Ahmed R.

    Business Intelligence Lead

    PL-300 Certified ✓ Verified
  • ★★★★★

    “Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”

    Rahul M.

    Rahul M.

    Azure Administrator

    AZ-104 Certified ✓ Verified
  • ★★★★★

    “I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”

    Sarah K.

    Sarah K.

    CISO, Financial Services

    Enterprise Client ✓ Verified
  • ★★★★★

    “The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”

    Ahmed R.

    Ahmed R.

    Business Intelligence Lead

    PL-300 Certified ✓ Verified
  • ★★★★★

    “From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”

    Priya S.

    Priya S.

    Cloud Solutions Architect

    AZ-305 Expert ✓ Verified
  • ★★★★★

    “As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”

    James T.

    James T.

    Head of L&D, UK Enterprise

    100+ Learners Trained ✓ Verified
  • ★★★★★

    “SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”

    Aisha N.

    Aisha N.

    Security Analyst

    SC-300 Certified ✓ Verified
  • ★★★★★

    “From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”

    Priya S.

    Priya S.

    Cloud Solutions Architect

    AZ-305 Expert ✓ Verified
  • ★★★★★

    “As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”

    James T.

    James T.

    Head of L&D, UK Enterprise

    100+ Learners Trained ✓ Verified
  • ★★★★★

    “SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”

    Aisha N.

    Aisha N.

    Security Analyst

    SC-300 Certified ✓ Verified
  • ★★★★★

    “AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”

    David L.

    David L.

    AI Engineer

    AI-102 Certified ✓ Verified
  • ★★★★★

    “DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”

    Mei W.

    Mei W.

    Data Platform Engineer

    DP-600 Certified ✓ Verified
  • ★★★★★

    “Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”

    Carlos R.

    Carlos R.

    Engineering Manager

    AZ-400 Team Training ✓ Verified
  • ★★★★★

    “AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”

    David L.

    David L.

    AI Engineer

    AI-102 Certified ✓ Verified
  • ★★★★★

    “DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”

    Mei W.

    Mei W.

    Data Platform Engineer

    DP-600 Certified ✓ Verified
  • ★★★★★

    “Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”

    Carlos R.

    Carlos R.

    Engineering Manager

    AZ-400 Team Training ✓ Verified

Frequently Asked Questions

Everything you need to know about the Asterisk Development training course

Is the certification exam included in the Asterisk Development course, and what is the exam fee?
The certification exam is not included in the Asterisk Development course by Sangoma and requires a separate purchase. The Asterisk Certified Essentials exam costs $150, as listed on the official Sangoma certification portal. Candidates must register and pay directly through the Sangoma University platform to schedule their exam session.
What training formats are available for the Asterisk Development course, and is Guaranteed-to-Run scheduling offered?
Koenig provides Asterisk Development training in four formats: live online instructor-led, 1-on-1 personalized, classroom, and self-paced Flexi. All public batches are Guaranteed-to-Run (GTR), meaning sessions proceed regardless of enrollment numbers. This ensures you can book your training with absolute confidence, knowing your course will not be canceled.
How long is lab access provided, and what type of lab environment is used for Asterisk Development?
You receive 30 days of lab access for the Asterisk Development course via Koenig’s cloud-based TechLabs sandbox. This vendor-aligned environment provides secure, remote access to real-world Asterisk systems. It allows you to practice dial plans, SIP trunks, and AGI/AMI scripting immediately without needing to configure local hardware or complex software setups.
What is Koenig's rescheduling and cancellation policy for the Asterisk Development course?
Koenig permits free rescheduling of your Asterisk Development course if you provide notice more than 10 days before the start date. Cancellations or rescheduling requests within 10 days incur a 50% fee of the total course cost. Per Koenig’s Terms of Service, each training session may be rescheduled only once to maintain administrative consistency.
What is the format, number of questions, passing score, and time limit for the Asterisk Certified Essentials exam?
The Asterisk Certified Essentials exam features 60 multiple-choice questions with a 90-minute time limit. You must achieve a passing score of 80%, which equals 48 correct answers. Administered via the Sangoma portal, the exam validates your expertise in core Asterisk functionality, VoIP protocols, system installation, configuration, and essential CLI administration tasks.
How long is the Asterisk Certified Essentials certification valid, and what is the renewal process?
Your Asterisk Certified Essentials certification remains valid for 2 years from the issuance date. To renew, you must repurchase and pass the current exam version through the Sangoma University portal at portal.sangoma.com under Store > University > Exam Renewal. Note that there is no grace period; your certification will lapse if not renewed before expiration.
What post-training support does Koenig provide after completing the Asterisk Development course?
Koenig offers 30 days of post-training support for the Asterisk Development course, including access to session recordings, expert mentor guidance, and continued lab practice. You also benefit from our Happiness Guarantee, which allows a free course retake if your initial expectations are not met, ensuring you achieve full mastery and certification readiness.
What are the prerequisites or prior experience needed for the Asterisk Development course?
Learners should possess foundational knowledge of Linux system administration, basic networking, and VoIP concepts before starting the Asterisk Development course. Prior hands-on experience with installing and configuring Asterisk, alongside familiarity with SIP, dial plans, and CLI tools, is strongly recommended to maximize your learning outcomes during these advanced development sessions.
What career opportunities and salary ranges are available after completing Asterisk Development training?
Graduates can pursue roles such as VoIP Engineer or Asterisk Developer, with average salaries ranging from ₹12.8L/year in India to $100,000–$150,000 in the US. Senior professionals holding this certification with 6+ years of experience can earn up to ₹23.5L in India or $150,000 in the US, reflecting high market demand for these specialized skills.
How does instructor-led Asterisk Development training compare to self-study in terms of success rate and time efficiency?
Instructor-led training at Koenig provides structured learning, real-time doubt resolution, and hands-on labs, resulting in higher certification success rates than self-study. With expert guidance, you master complex topics faster, typically completing preparation in 2–3 weeks compared to 2–3 months for self-study. This significantly improves your time-to-certification and overall professional job readiness.

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