Get in Touch
 Duration 21 hours (3 days)

Course Outline

Part I: Introduction

  1. Introduction
    1. Historical context and motivation
    2. Evolution and types of VoIP
    3. Core concepts of SIP
    4. SIP standardization (RFC 3261 and other relevant standards)
  2. Architecture
    1. UA – User Agent
    2. Predefined servers: Registrar, Location, Proxy, and Redirect
    3. Application servers
    4. Identification and addressing mechanisms
    5. The SIP trapezoid model
  3. Servers and their operational roles
    1. Registration processes
    2. SIP server operations in Proxy and Redirect modes
    3. Differences between Stateless and stateful Proxy servers
    4. Location server functionality
    5. SRV records and DNS integration
    6. uri/url/urn, ENUM, and NAPTR records
  4. SIP signalling messages (including Instant Messaging & Presence – IMP extensions)
    1. Message structure anatomy
    2. Request mechanisms
    3. Response handling
    4. Practical example of a call flow
    5. Headers and parameter details
    6. IMP models
  5. SDP (Session Description Protocol)
    1. Media description standards
    2. Standard list of supported codecs
    3. Session negotiation rules
  6. Call flows – SIP signalling
    1. SIP session – main RFC 3261 example
    2. Sample call scenarios
    3. Conferencing and IP PBX integration
    4. Dynamic media changes during a session
    5. Utilizing IMP features
  7. Routing of SIP requests and responses
    1. VIA header analysis
    2. ROUTE and RECORD-ROUTE header usage
  8. SIP-PSTN interworking
    1. SIP-T and SIP-I protocols
    2. SIP early media and SIP trunking
    3. SIP-PSTN signalling interactions
  9. SIP – security challenges
    1. Secure SIP, Secure RTP, and Secure RTCP
    2. Typical implementations of Secure SIP
  10. Practical challenges and future perspectives
    1. NAT and firewall traversal techniques
    2. Quality of Service (QoS)
    3. SIP and SDP within the 3GPP IMS architecture
  11. Wrap-up and discussion

Part II: Hands-on Lab

  1. SIP in a LAN environment: XLite SIP UA + Asterisk
    1. Creating Asterisk accounts with a basic dial plan
    2. Configuration of XLite SIP UA (dtmf, codecs, nat, rtp, timer, register) and SIP phones (Polycom, Gigaset, Yealink, Linphone)
    3. Registration, initiating, and receiving calls
    4. Peer-to-peer (P2P) calls using Linphone
  2. Analyzing SIP signalling using Wireshark
    1. Server configuration setup
    2. Capturing SIP signalling and RTP media streams
    3. SIP packet analysis. Retrieval of a specific call record
    4. Voice quality issues. Jitter buffer management. Retrieval of DTMF signalling (RFC 2833, INFO). Codec and DTMF troubleshooting (transcoding, GSM codec failure, DTMF tone duplication)
    5. VoIP monitoring tools
  3. SDP, Instant Messaging, and Presence (IM&P)
    1. SDP parameters and attributes
    2. SUBSCRIBE, PUBLISH, and MESSAGE SIP methods
    3. Practical exercises with IM&P using XLite and Linphone
  4. SIP call flows
    1. SIP Registration with DNS
      • SIP SRV record configuration
      • SIP phone registration using DNS-SRV
    2. Call Flows with DNS
      • Analysing SIP call signalling using Wireshark
      • Troubleshooting – DNS timeout and latency issues
  5. SIP trunks
    1. Establishing a test SIP trunk
    2. Troubleshooting (DOS, DDOS, fraud, cps)
  6. SIP security issues
    1. SIP security with IPSec
    2. Security with Secure SIP
    3. IP telephony – risk of frauds
    4. Preventing DDOS and other types of attacks
  7. Launching SIP-based VoIP services
    1. Configuration of a switch
    2. SIP client configuration and registration
    3. Software stack
      • Asterisk PBX / Freeswitch softswitch / Cisco Call Manager
      • Linux CentOS
      • TDM2IP drivers
      • Softphones (XLite, Linphone)
    4. Hardware components
      • Server infrastructure
      • TDM2IP card/gateway
      • Hardphone (Polycom, Gigaset, Yealink)
  8. Softphone/Hardphone management
    1. Configuration
      • Codecs
      • User/Password/SIP Server/Proxy/Ports
    2. Operation and signalling for:
      • 3-Way Calling
      • Call Forwarding
      • Attendant Call Transfer
      • MWI, BLF
    3. Yealink autoprovisioning
    4. Vendor-specific constraints
  9. SIP & Network Address Translation (NAT) problems
    1. Type and structure of NATs
    2. STUN (Simple Traversal of UDP Through NATs)
  10. Quality of VoIP calls – troubleshooting
    1. Call connected – missing media
    2. Key QoS factors
      • Delay, jitter, play buffer size
    3. VoIP quality metrics
      • RTCP – delay and jitter
      • MOS according to ITU-T G.107 E-model
    4. VoIP quality monitoring tools (Voipmonitor)
  11. Cloud-based IP telephony
  12. Wrap up and addressing SIP and VoIP related issues submitted by participants

Number of participants


Price per participant

Open Training Courses require 5+ participants.

Testimonials (7)

Good contact with the trainer

Radziszewski - EduBroker Sp. z o.o.
Course - SIP protocol in VoIP

Detailed analysis of the provided traces

Krzysztof - EduBroker Sp. z o.o.
Course - SIP protocol in VoIP

examples presented

Slawomir - NBP
Course - SIP protocol in VoIP

The instructor patient to explain and show the step on each lab session.

CHEE WAI KAN - Maxis Broadband Sdn Bhd
Course - SIP protocol in VoIP

Trainer can explain and give example for questions asked

SHAMSANI ABU BAKAR - Maxis Broadband Sdn Bhd
Course - SIP protocol in VoIP

Very informative and detail explanation

Syahrifendi Lukmanilhakim - Maxis Broadband Sdn Bhd
Course - SIP protocol in VoIP

The tools and the contents of the slide.

Kak Khen Man - Maxis Broadband Sdn Bhd
Course - SIP protocol in VoIP

Upcoming Courses

SIP protocol in VoIP

2026-10-28 09:30
21 hours
Chandigarh - Classroom C1
252,991 INR (Online)
279,991 INR (Classroom)

SIP protocol in VoIP

2026-11-11 09:30
21 hours
Gurgaon,- DLF Phase IV - Classroom
252,991 INR (Online)
259,291 INR (Classroom)

SIP protocol in VoIP

2026-11-25 09:30
21 hours
Indore, A.B. Road - Classroom
252,991 INR (Online)
273,991 INR (Classroom)

SIP protocol in VoIP

2026-12-09 09:30
21 hours
Noida, Sector 62 - Classroom
252,991 INR (Online)
270,991 INR (Classroom)

SIP protocol in VoIP

2026-12-23 09:30
21 hours
Tamil Nadu, OMR, Chennai - Classroom
252,991 INR (Online)
267,991 INR (Classroom)

Related Courses

CCNA 200-301 exam prep

 35 Hours

This CCNA course provides extensive training and resources to ensure participants are well-prepared for the CCNA certification exam. With hands-on labs, continuous assessments, and significant savings on certification costs, this course is designed to support participants in achieving their networking certification goals.

Read more...

CCNA Routing & Switching

 35 Hours

This instructor-led, live training in India (available online or on-site) targets expert-level network professionals who wish to prepare for the CCNA Routing & Switching certification exam.

By the end of this training, participants will be able to:

  • Develop a comprehensive understanding of networking fundamentals.
  • Master IP connectivity and understand WAN technologies.
  • Secure network devices using Access Control Lists (ACLs), VPNs, and other security protocols to prevent unauthorised access and threats.
  • Prepare for the CCNA Routing & Switching Certification exam.
Read more...

Implementing Cisco Catalyst 9000 Series Switches

 28 Hours

This instructor-led, live training in India (online or onsite) is tailored for intermediate-level IT professionals who wish to gain the essential knowledge and practical skills needed to deploy, manage, and troubleshoot Cisco Catalyst 9000 Series Switches in modern network environments.

By the conclusion of this training, participants will be able to:

  • Understand the architecture, capabilities, and positioning of the Cisco Catalyst 9000 Series switches.
  • Use CLI, Cisco DNA Center, and IOS-XE web user GUI for management.
  • Utilize security features, cloud integration, and automation tools.
  • Deploy the switches within various network environments.
  • Leverage Cisco DNA Center for device provisioning, management, and automation.
Read more...

Cisco CCNP

 35 Hours

This instructor-led, live training in India (online or onsite) is aimed at advanced-level network professionals who wish to gain a deeper understanding of Cisco Enterprise Network and pass the CCNP certification exam.

By the end of this training, participants will be able to:

  • Understand the architecture and components of Cisco enterprise networks.
  • Implement and troubleshoot advanced routing technologies and secure enterprise LAN and WAN networks.
  • Configure and manage Cisco SD-WAN solutions for enterprise networks.
  • Design enterprise networks with an emphasis on scalability, security, and availability.
  • Take the CCNP Certification Exam with confidence.
Read more...

Cisco CCNP Service Provider: Core, Advanced Routing, and Automation

 35 Hours
This instructor-led training on India addresses the Cisco CCNP Service Provider track, emphasizing core technologies, advanced routing, and automation. It equips networking professionals to design and manage modern SP networks, covering MPLS, segment routing, BGP, and Python-based API automation.
Read more...

Transforming to a Cisco Intent-Based Network (IBNTRN) v1.1

 21 Hours

This instructor-led, live training in India (online or onsite) targets intermediate-level network professionals aiming to achieve more agile, secure, and efficient networks that closely align with business objectives and dynamically adapt to changing needs and threats.

By the end of this training, participants will be able to:

  • Understand the fundamentals of Intent-Based Networking.
  • Implement network automation and integrate security in the Intent-Based Network.
  • Use analytics for network monitoring and understand how assurance can provide insights into network performance and user experience.
  • Design and deploy an IBN that meets business requirements and operational objectives.
Read more...

Cisco ISE Management and Administration

 28 Hours

This instructor-led, live training in India (online or onsite) is designed for intermediate-level network administrators aiming to learn how to implement, configure, and optimize ISE for effective network security.

By the end of this training, participants will be able to:

  • Deploy Cisco ISE in various network environments, considering best practices, hardware, and software requirements.
  • Implement network profiling to identify and classify connected devices.
  • Manage authorization and access control.
  • Configure posture policies, remediation actions, and compliance modules.
Read more...

Implementing and Configuring Cisco Identity Services Engine (SISE) v4.0

 21 Hours

This instructor-led, live training in India (online or onsite) is designed for intermediate-level network security professionals aiming to learn how to implement and configure Cisco ISE to bolster their network infrastructure's security posture.

By the end of this training, participants will be able to:

  • Understand Cisco ISE architecture and access control capabilities.
  • Implement basic network access control and advanced network access control.
  • Configure and manage TACACS+ for device administration, command authorization, and role-based access control.
Read more...

Cisco Switching Solutions: Advanced Implementation and Management

 35 Hours

This instructor-led, live training in India (online or onsite) is aimed at intermediate-level network engineers, architects, and system administrators who wish to gain the knowledge and skills required to implement and manage Cisco's Nexus 9K and Catalyst 9200/9500 series switches. It combines theoretical knowledge with hands-on practical experience, focusing on the Cisco NX-OS and IOS-XE platforms.

By the end of this training, participants will be able to:

  • Install and manage Cisco Nexus 9K and Catalyst 9200/9500 switches.
  • Configure advanced switch features for optimal performance.
  • Integrate switches into diverse network environments.
  • Enhance network resilience and efficiency.
  • Utilize switches for high availability and data management.
Read more...

Cisco Unified Communications Management v12.x Administration

 35 Hours

This instructor-led, live training conducted in India (online or onsite) caters to intermediate-level network engineers keen on developing the expertise needed to effectively administer, manage, and optimise Cisco Unified Communications Manager (CUCM) v12.x.

By the conclusion of this training, participants will be able to:

  • Comprehend the architecture and deployment of CUCM.
  • Learn the procedures for installing, setting up, and performing initial configurations of CUCM, including the establishment of users, devices, and basic network settings.
  • Implement and manage call routing.
  • Carry out system maintenance and troubleshooting.
Read more...

Implementing Cisco Enterprise Wireless Networks (ENWLSI) v2.0

 21 Hours

This instructor-led, live training conducted in India (online or onsite) is intended for intermediate-level network professionals who want to implement and secure wireless networks in enterprise environments using Cisco technologies.

By the conclusion of this training, participants will be able to:

  • Design and implement FlexConnect architectures.
  • Deploy Quality of Service (QoS) in wireless network environments.
  • Configure and troubleshoot multicast traffic in wireless networks.
  • Implement security protocols for wireless client connectivity.
Read more...

Related Categories

Cisco
Cisco
VoIP
VoIP