Yate

YateClient

YateBTS

Freesentral

Open Source

Yate

is an advanced, mature, flexible telephony server that is used for VoIP and fixed networks and for traditional mobile operators and MVNOs.
has been used as a soft switch, an STP, an HLR/HSS, an SMSC, a USSD gateway, and in many SS7 and SIP custom applications.
supports a vast array of protocols like: SIP, H323, IAX, SS7, Diameter, Radius, MGCP, ISDN, CAMEL, Jabber, Jingle and more.
includes a native Javascript interpreter and APIs to allow developing custom applications in various scripting languages.

Newest release: Yate 6.0.0

- Yate now includes a Radio device API and a bladeRF module with automatic frequency calibration
- A lot of small fixes and improvements regarding behavior of SIP
- Additions and many minor fixes in the Javascript implementation
- Configuration files now support inclusion
- Improvements in logging, default levels and interactive use
- Performance improvements and performance measurements
- Better support for creating applications based on Yate

Also available by Git