Telephone

Telephone

Telephone is an open source SIP softphone and VoIP client for making audio and video calls over the internet. It supports standard telephony features like call waiting, call forwarding and voicemail.
voip sip softphone telephony calling

Telephone: Open Source SIP Softphone & VoIP Client

Telephone is an open source SIP softphone and VoIP client for making audio and video calls over the internet. It supports standard telephony features like call waiting, call forwarding and voicemail.

What is Telephone?

Telephone is a free, open source software for making voice over IP (VoIP) telephone calls over the internet. It can be used as a softphone to make and receive calls through a VoIP service provider or ITSP (Internet Telephony Service Provider).

As an open source VoIP client, Telephone supports standard telephony features out of the box such as call waiting, call forwarding, voicemail, etc. It uses the SIP (Session Initiation Protocol) for signaling and audio/video transmission during calls.

Some key features of Telephone include:

  • Make and receive VoIP calls over any internet connection
  • HD audio and video calling support
  • Encrypted call signaling and media for security
  • Integrated contacts and call history management
  • Voicemail recording and playback
  • Cross-platform - works on Windows, Mac and Linux

Telephone integrates with most SIP providers and IP-PBX systems for business phone solutions. With its easy-to-use interface and rich feature set, Telephone is a great open source alternative to proprietary VoIP softphones for both personal and business use.

Telephone Features

Features

  1. Voice calls over IP
  2. Video calls
  3. Call waiting
  4. Call forwarding
  5. Voicemail
  6. Conference calling
  7. Call transfer
  8. Call hold
  9. Caller ID
  10. Call recording

Pricing

  • Open Source
  • Free

Pros

Free and open source

Cross-platform availability

Supports common telephony features

Encrypted calls for security

Customizable interface

Call quality optimization

Cons

Setup can be complex for non-tech users

May have compatibility issues

Limited native integration with cell networks

Requires stable internet connection


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