7.2 Telecommunications Protocols >> Common Telecommunications Protocols

Common Telecommunications Protocols:

  1. TCP/IP (Transmission Control Protocol/Internet Protocol):
    • TCP/IP is a suite of protocols that forms the foundation of the internet and most modern networks. It includes protocols like TCP for reliable data delivery and IP for addressing and routing.
  2. HTTP (Hypertext Transfer Protocol):
    • HTTP is used for transferring web content, such as HTML documents, over the World Wide Web. It operates over TCP and is responsible for requesting and delivering web pages.
  3. HTTPS (HTTP Secure):
    • HTTPS is a secure version of HTTP that uses encryption (SSL/TLS) to protect data transmitted between a user’s browser and a web server. It’s essential for secure online transactions.
  4. FTP (File Transfer Protocol):
    • FTP is used for transferring files between a client and a server. It supports both interactive and batch file transfers and can operate in secure modes (SFTP and FTPS).
  5. SMTP (Simple Mail Transfer Protocol):
    • SMTP is a protocol for sending and relaying email messages. It defines the rules for email delivery between mail servers.
  6. POP3 (Post Office Protocol version 3):
    • POP3 is an email retrieval protocol used by email clients to download messages from a mail server to a local device. It typically deletes messages from the server once they are downloaded.
  7. IMAP (Internet Message Access Protocol):
    • IMAP is another email retrieval protocol that allows email clients to access and manage messages stored on a mail server while keeping them synchronized.
  8. DNS (Domain Name System):
    • DNS is a critical protocol for translating human-readable domain names (e.g., www.example.com) into IP addresses used for routing on the internet.
  9. DHCP (Dynamic Host Configuration Protocol):
    • DHCP is used for dynamically assigning IP addresses and network configuration information to devices on a local network, simplifying network administration.
  10. SNMP (Simple Network Management Protocol):
    • SNMP is used for monitoring and managing network devices, such as routers, switches, and servers. It enables administrators to gather information and perform remote management tasks.
  11. SSH (Secure Shell):
    • SSH is a secure network protocol for secure remote login and command execution on remote servers. It provides encryption and authentication for secure communication.
  12. RTP (Real-time Transport Protocol):
    • RTP is used for transmitting audio and video data over IP networks, making it essential for real-time multimedia communication, such as video conferencing and VoIP.
  13. VoIP Protocols:
    • VoIP (Voice over Internet Protocol) relies on several protocols like SIP (Session Initiation Protocol) for call setup, RTP for media transport, and RTCP (Real-time Transport Control Protocol) for control and feedback.
  14. BGP (Border Gateway Protocol):
    • BGP is used for routing and exchanging routing information between autonomous systems on the internet. It plays a crucial role in internet backbone routing.
  15. ICMP (Internet Control Message Protocol):
    • ICMP is used for diagnostic and error reporting in IP networks. It includes functions like ping and traceroute for network troubleshooting.
  16. NTP (Network Time Protocol):
    • NTP is used for synchronizing the clocks of devices on a network, ensuring accurate timekeeping for various applications and services.
  17. SSL/TLS (Secure Sockets Layer/Transport Layer Security):
    • SSL/TLS protocols provide encryption and authentication for securing data transmission over the internet. They are used by HTTPS, email encryption, and more.

These common telecommunications protocols play vital roles in enabling secure and efficient communication across various networked devices and services, ensuring that data is transmitted reliably and securely.

Telecommunications and IT Handbook

Key terms in plain language

Open a term for a concise explanation of language used on this page.

VoIP

Voice over Internet Protocol carries phone calls over an IP network instead of a traditional analog phone line. Call quality depends on network stability, latency, and traffic management.

Cybersecurity

The practices and controls used to protect identities, devices, networks, applications, and data from unauthorized access, disruption, or manipulation.

Zero Trust

A security model that does not automatically trust a user or device because of its location. Access is continuously verified and limited to what is necessary.

SASE

Secure Access Service Edge combines networking and security capabilities in a cloud-delivered architecture so users and locations can receive consistent policy wherever they connect.

Identity and Access Management (IAM)

The systems and policies that determine who a user is, what resources they may access, and how that access is authenticated and reviewed.

Multi-Factor Authentication (MFA)

A login control requiring more than one form of verification, such as a password plus an authenticator app, security key, or biometric factor.