Resources For You

  1. 5 Essential Marketing Strategies for VoIP Businesses

    5 Essential Marketing Strategies for VoIP Businesses

  2. 5 Technologies Set to Revolutionise Webphones

    5 Technologies Set to Revolutionise Webphones

  3. 5 Unique Types of VoIP Gateways Explained!

    5 Unique Types of VoIP Gateways Explained!

  4. 5 Ways a Cloud PBX System Benefits Remote Work

    5 Ways a Cloud PBX System Benefits Remote Work

  5. 5 Ways SBCs Facilitate Unified Communications as a Service

    5 Ways SBCs Facilitate Unified Communications as a Service

  6. 5 Ways to Optimise ASR To Grow Profitability

    5 Ways to Optimise ASR To Grow Profitability

  7. 7 Additional Important Components of a VoIP Carrier Network Explained

    7 Additional Important Components of a VoIP Carrier Network Explained

  8. 7 Important Factors to Consider When Implementing LCR

    7 Important Factors to Consider When Implementing LCR

  9. 7 Ways to Optimize AHT

    7 Ways to Optimize AHT

  10. 9 Key Functions of an SBC Explained

    9 Key Functions of an SBC Explained

  11. 10 Factors to Consider While Choosing a Webphone

    10 Factors to Consider While Choosing a Webphone

  12. 10 Important Components of a VoIP Carrier Network Explained

    10 Important Components of a VoIP Carrier Network Explained

  13. 10-Point Security Checklist for VoIP Carriers

    10-Point Security Checklist for VoIP Carriers

  14. 10 Tips For Effective Implementation of LCR

    10 Tips For Effective Implementation of LCR

  15. 10 Webphone Features that Benefit Your Business

    10 Webphone Features that Benefit Your Business

  16. An Out of the Box Telecoms Network

    An Out of the Box Telecoms Network

  17. Are Call Centers Still Relevant in 2023?

    Are Call Centers Still Relevant in 2023?

  18. Automated Dialler vs Manual Dialler - Knowing the 7 Key Differences

    Automated Dialler vs Manual Dialler - Knowing the 7 Key Differences

  19. Call Center vs Contact Center - Understanding the Differences

    Call Center vs Contact Center - Understanding the Differences

  20. Choosing SIP over TCP,TLS and UDP in 2022

    Choosing SIP over TCP,TLS and UDP in 2022

  21. Class 4 Softswitch vs Class 5 Softswitch - Understanding the Difference

    Class 4 Softswitch vs Class 5 Softswitch - Understanding the Difference

  22. Combatting Covid-19 with Carrier-Grade Communications Solutions to Help Users Work Remotely

    Combatting Covid-19 with Carrier-Grade Communications Solutions to Help Users Work Remotely

  23. Comprehensive Cloud Softswitch Documentation

    Comprehensive Cloud Softswitch Documentation

  24. ConnexCS expands AnyEdge SIP Load Balancer to India

    ConnexCS expands AnyEdge SIP Load Balancer to India

  25. ConnexCS for Africa

    ConnexCS for Africa

  26. ConnexCS WebPhone SDK Connector

    ConnexCS WebPhone SDK Connector

  27. Discover the Different Types of NAT: An Essential Guide for Network Administrators

    Discover the Different Types of NAT: An Essential Guide for Network Administrators

  28. Discussing the Future and Top 9 Benefits of WebRTC

    Discussing the Future and Top 9 Benefits of WebRTC

  29. DNO And DNC Lists - Everything Carriers Should Know

    DNO And DNC Lists - Everything Carriers Should Know

  30. Email and SMS Alerts

    Email and SMS Alerts

  31. Employers' Guide to Winning at Remote Work

    Employers' Guide to Winning at Remote Work

  32. Exploring the Top 10 Types of Web Phones in 2023!

    Exploring the Top 10 Types of Web Phones in 2023!

  33. False Answer Supervision Detection - The Ultimate Tool for Preventing VoIP Fraud

    False Answer Supervision Detection - The Ultimate Tool for Preventing VoIP Fraud

  34. Far-End NAT Traversal - An In-Depth Guide

    Far-End NAT Traversal - An In-Depth Guide

  35. Feature Releases for June 2024

    Feature Releases for June 2024

  36. From Cost Savings to Mobility - 15 Benefits of Web Phones for Businesses

    From Cost Savings to Mobility - 15 Benefits of Web Phones for Businesses

  37. Get Your FCC Registration Number in 5 Easy Steps!

    Get Your FCC Registration Number in 5 Easy Steps!

  38. How to Build Your API on ConnexCS

    How to Build Your API on ConnexCS

  39. How to Build Your Own Dialer (BYOD) – Part 1

    How to Build Your Own Dialer (BYOD) – Part 1

  40. How to Establish a VoIP Interconnect in 10 Easy Steps

    How to Establish a VoIP Interconnect in 10 Easy Steps

  41. How to Get Operating Company Number (OCN) in 4 Easy Steps

    How to Get Operating Company Number (OCN) in 4 Easy Steps

  42. How to Identify Robocall Scam Traffic - A Comprehensive Guide for Telecom and VoIP Operators

    How to Identify Robocall Scam Traffic - A Comprehensive Guide for Telecom and VoIP Operators

  43. How to Improve CX? Ensure your Call Center Agents are Happy!

    How to Improve CX? Ensure your Call Center Agents are Happy!

  44. How to Prepare for a VoIP Network Security Audit

    How to Prepare for a VoIP Network Security Audit

  45. How to Properly Prepare for Setting up a VoIP Interconnect

    How to Properly Prepare for Setting up a VoIP Interconnect

  46. How to Register for the Robocall Mitigation Database: A step-by-step guide!

    How to Register for the Robocall Mitigation Database: A step-by-step guide!

  47. How to Successfully Implement LCR is 5 Easy Steps

    How to Successfully Implement LCR is 5 Easy Steps

  48. How Using Web Phones Can Benefit These 10 Industries?

    How Using Web Phones Can Benefit These 10 Industries?

  49. Importance of Balancing Cost Minimization and Reliable Call Quality when implementing LCR

    Importance of Balancing Cost Minimization and Reliable Call Quality when implementing LCR

  50. Introducing ConnexCS WebPhone

    Introducing ConnexCS WebPhone

  51. Introducing ConneXML - The Best TwiML Alternative

    Introducing ConneXML - The Best TwiML Alternative

  52. Introducing Smart CLI Select - An Effective Way to Improve your ASR

    Introducing Smart CLI Select - An Effective Way to Improve your ASR

  53. LTE vs VoLTE: Diving Into The Differences

    LTE vs VoLTE: Diving Into The Differences

  54. Operating Company Numbers (OCN) - Understanding Function, Importance and Relevance

    Operating Company Numbers (OCN) - Understanding Function, Importance and Relevance

  55. Populating Our Support Area With Cloud Softswitch Video Guides

    Populating Our Support Area With Cloud Softswitch Video Guides

  56. Predictive Dialler vs Progressive Dialler - Understanding the Differences

    Predictive Dialler vs Progressive Dialler - Understanding the Differences

  57. Preview Dialler vs Power Dialler - Understanding Top 5 Differences

    Preview Dialler vs Power Dialler - Understanding Top 5 Differences

  58. Rate Card Profit Assurance

    Rate Card Profit Assurance

  59. Redundant Redundancies (Backups of backups)

    Redundant Redundancies (Backups of backups)

  60. Revolutionise Your Outbound Calls - 8 Types of VoIP Diallers Explained

    Revolutionise Your Outbound Calls - 8 Types of VoIP Diallers Explained

  61. Scalability – Grow at Speeds That Suit You

    Scalability – Grow at Speeds That Suit You

  62. ScriptForge – Javascript Routing

    ScriptForge – Javascript Routing

  63. Simplifiying our Softswitch Pricing

    Simplifiying our Softswitch Pricing

  64. SIP 101 - The Best Guide of 2022

    SIP 101 - The Best Guide of 2022

  65. The 3CX Supply Chain Attack - Understanding Everything That Happened

    The 3CX Supply Chain Attack - Understanding Everything That Happened

  66. The 5 Best Strategies for Mitigating Robocall Scams

    The 5 Best Strategies for Mitigating Robocall Scams

  67. The Anatomy of Robocall Scams

    The Anatomy of Robocall Scams

  68. The Art of Cost Optimization - Least Cost Routing and Its 7 Benefits

    The Art of Cost Optimization - Least Cost Routing and Its 7 Benefits

  69. The Best Multi-POP Cloudswitch

    The Best Multi-POP Cloudswitch

  70. The Essential Guide to Business Continuity Plans for VoIP Carriers

    The Essential Guide to Business Continuity Plans for VoIP Carriers

  71. The Essential Guide to Implementing STIR/SHAKEN

    The Essential Guide to Implementing STIR/SHAKEN

  72. The Ultimate Guide to STIR/SHAKEN

    The Ultimate Guide to STIR/SHAKEN

  73. Timeout Protections (SIP Ping, SST)

    Timeout Protections (SIP Ping, SST)

  74. TLS and 2FA Security on the ConnexCS Platform

    TLS and 2FA Security on the ConnexCS Platform

  75. Top 5 Alternative Marketing Strategies for VoIP Businesses

    Top 5 Alternative Marketing Strategies for VoIP Businesses

  76. Top 5 Call Center Challenges and How To Overcome Them

    Top 5 Call Center Challenges and How To Overcome Them

  77. Top 5 Important Types of VoIP Gateways Explained

    Top 5 Important Types of VoIP Gateways Explained

  78. Top 7 Strategies For Ensuring Call Quality While Minimizing Costs with LCR

    Top 7 Strategies For Ensuring Call Quality While Minimizing Costs with LCR

  79. Top 9 Indicators that Help You Identify a Bad Carrier

    Top 9 Indicators that Help You Identify a Bad Carrier

  80. Top 10 Points of Differences Between a Traditional and VoIP Carrier

    Top 10 Points of Differences Between a Traditional and VoIP Carrier

  81. Top 10 Types of Robocall Scams Explained!

    Top 10 Types of Robocall Scams Explained!

  82. Top 10 VoIP Vulnerabilities You Must Know About

    Top 10 VoIP Vulnerabilities You Must Know About

  83. Understanding Global RTP Servers (Lowest Latency Possible, High Availability)

    Understanding Global RTP Servers (Lowest Latency Possible, High Availability)

  84. Understanding Network Address Translation (NAT) - A Beginner's Guide

    Understanding Network Address Translation (NAT) - A Beginner's Guide

  85. Understanding the 9 Key Objectives of a VoIP Network Security Audit

    Understanding the 9 Key Objectives of a VoIP Network Security Audit

  86. Understanding the Complete Scope of a VoIP Network Security Audit

    Understanding the Complete Scope of a VoIP Network Security Audit

  87. Understanding the Crucial Role of Session Border Controllers in Carrier-Grade VoIP Networks

    Understanding the Crucial Role of Session Border Controllers in Carrier-Grade VoIP Networks

  88. Understanding VoIP Anycast Load Balancing

    Understanding VoIP Anycast Load Balancing

  89. Understanding What a PBX System is and How it Benefits Your Business

    Understanding What a PBX System is and How it Benefits Your Business

  90. VoIP Carrier Network Components - Understanding Session Border Controllers

    VoIP Carrier Network Components - Understanding Session Border Controllers

  91. VoIP Carrier Network Security - How to Conduct Security Audit?

    VoIP Carrier Network Security - How to Conduct Security Audit?

  92. VoIP Carrier's Ultimate Guide to Cleaning Up Their Traffic

    VoIP Carrier's Ultimate Guide to Cleaning Up Their Traffic

  93. VoIP Interconnects - Learning How VoIP Carrier Connect and Exchange Traffic

    VoIP Interconnects - Learning How VoIP Carrier Connect and Exchange Traffic

  94. VoLTE - An Evolution in Voice Communication

    VoLTE - An Evolution in Voice Communication

  95. WebPones Explained: Understanding Web-Based Telephonic Communication

    WebPones Explained: Understanding Web-Based Telephonic Communication

  96. WebRTC 101 - The Best Guide for Beginners

    WebRTC 101 - The Best Guide for Beginners

  97. What Are SIP Traces - A Beginners Guide

    What Are SIP Traces - A Beginners Guide

  98. What Are The Top 10 Essential Call Center KPIs?

    What Are The Top 10 Essential Call Center KPIs?

  99. What Are VoIP Gateways and How Do They Work? A Comprehensive Guide

    What Are VoIP Gateways and How Do They Work? A Comprehensive Guide

  100. What is a Contact Center and Why Does Your Business Need One?

    What is a Contact Center and Why Does Your Business Need One?

  101. What is Robocall Mitigation Database? A Guide for Carriers and VoIP Operators

    What is Robocall Mitigation Database? A Guide for Carriers and VoIP Operators

Choosing SIP over TCP,TLS and UDP in 2022

VoIP communication changed the way people and businesses communicated. It drastically reduced costs and improved the customer experience.

Cost-effective and quick communication revolutionised customer support and customer relationship management.

With the advent of higher-speed internet, VoIP transitioned from being used on a LAN to being used worldwide. With this came a greater need to choose the right protocol. No longer were networks low latency, low jitter and private

So, how do you choose your protocol communications in VoIP using SIP?

There are multiple options such as UDP, TCP and TLS. Before we compare the three, let’s dive into the basics of everything!

What is Session Initiation Protocol?

The Session Initiation Protocol (SIP) is a signalling protocol that is used to initiate, maintain, modify and terminate a communication session in real-time over the Internet Protocol.

The communication session can contain voice, video, text, or a combination of any or all three media.

So technically, SIP is a universal protocol based on which VoIP functions. SIP itself is based on two other universal protocols viz. HTTPS and SMTP.

OSI Model

To initiate a VoIP call, packets of data are sent across the internet to establish and maintain a direct line of communication. These packets contain the SIP data used to establish the said connection.

There are multiple ways in which these packets can be sent across the internet.

Let us understand how these SIP packets are sent and what considerations need to be made for each protocol.

Network Transport Protocols

When we consider the basics, SIP is an application layer protocol. It was designed to be independent of the underlying network transport protocol.

Thus, SIP can run over different network protocols. A network protocol decides how a SIP packet is transported across the internet.

Every network protocol is different and prioritises a different set of objectives. Knowing these protocols will help you choose the best one for your requirements and keep your communication lines secure.

So let’s dive in and understand the different network transport protocols!

Transmission Control Protocol (TCP)

Transmission Control Protocol, often abbreviated as TCP, is a communication standard that enables applications, programmes and IP-based devices to communicate over the Internet.

TCP was developed by the US Department of Defence to enable accurate transmission of data between defence tech infrastructure.

When two devices or servers communicate using TCP, they establish a formal connection.

When the sender sends a packet to the receiver, the receiver is required to send an acknowledgement packet back to the sender confirming the delivery of packet 1.

If the receiver fails to receive a packet or does not send the acknowledgement packet within time, the sender re-sends that packet to the receiver.

The packets are sent through various routes to their destination and rearranged as per their order at the destination.

TCP is optimised to ensure accurate delivery of data packets and that the data packets are only received by the intended receiver.

This also means that the receiver will receive all the data packets in the sequence the sender had sent them in. For this reason, buffers have to be used, with adds a few ms when receiving the packets.

Transport Layer Security (TLS)

Transport Layer Security, commonly known as TLS, isn’t a completely new protocol itself but an additional layer of security added on top of TCP.

It was developed as an extension of SSL that was in turn developed by Netscape.

In addition to using both public key and symmetric encryption to transport data packets securely, it also has useful features such as authentication and message tamper detection.

TLS ensures no compromise in terms of data integrity and connection security. In doing so it adds additional steps to the already slow TCP protocol.

Implementing TLS adds additional latency to the communication process. However, in applications where security is a top concern, TLS is the ideal protocol to be implemented.

User Datagram Protocol (UDP)

User Datagram Protocol, more commonly termed UDP, is a communication protocol specially used for time-sensitive, low-latency and loss-tolerating data transfers or communications.

In contrast to the TCP protocol, the UDP protocol does not require the sender to establish formal communication with the receiver.

As data transfer/communication is time sensitive, a sender can begin sending data packets directly to the receiver.

Thus, UDP trades the reliability offered by TCP with enhanced speed in terms of communication/data transfer.

These characteristics make UDP the ideal choice for VoIP (Audio Streams), DNS lookup, and audio and video playback.

A major drawback with UDP is that it lacks any error correction capability. This means it cannot assure whether the packets will be received in the intended order. Some packets might also end up lost in the data transmission process.

However, UDP has its upside when it comes to certain applications. The fast speed of UDP makes it an ideal choice for video calls and voice calls.

Let's continue and discuss what protocol is most useful for what application.

Choosing between TCP, UDP and TLS for SIP

Understanding what each network transport protocol does must have given you a good idea about where each one would be the most suitable.

In case you’re still wondering, let us help you with that.

TCP, TLS and UDP Comparison

TCP

TCP sits in the middle of the lot with relatively good security, data integrity and reliability. This makes TCP the ideal choice for network transport protocol for communication applications where every call is important. that have relatively low call throughput but require security as well.

For example let us consider a personal communications platform such as WhatsApp, Skype or equivalents. Each user is not going to be generating a high call throughput.

At the same time, data security and privacy are strong concerns for individual users. Thus, TCP fulfils these requirements thoroughly.

TLS

TLS is by far the slowest but the most secure protocol to run SIP over. This makes TLS the ideal choice for VoIP applications that have security as their top priority.

At one time this was only of use for communication between top government administrators or military officials.

But in an information-centric world, privacy is important. Whether this is for PCI or regulatory compliance, or just best practice SIP over TLS is fast becoming in norm to catch up with other communication apps.

Here the call throughput is going to be less. However, security will always be a top concern.

UDP

UDP prioritises high speed which is suitable for time-sensitive communication. Moreover, as it lacks any additional steps for security, it has lower cost overheads among the three network transport protocols.

This makes UDP the ideal choice for communication applications that aren’t a high priority, large in terms of call throughput and cost-sensitive.

For example, you can consider customer support operations for an FMCG firm. While you’re still dealing with customers, such operations do not require much security.

Moreover, as the expected call throughput is going to be high, a lighter and quicker process will always translate into saving for the operator.

To Conclude With

Each network transport protocol prioritises a different set of communication requirements. Choosing the right protocol will always come down to what application you’re looking to implement using SIP.

These three protocols cover all the different sets of requirements any communication application might present. Moreover, as these are standardised universally, it becomes easy to implement and operate your application on top.

So what protocol would you use for your communications?