Lightweight Telephony Protocol.
Lightweight Telephony Protocol (LTP) is a small-footprint third generation communications protocol especially developed for end-user terminals and handsets.
LTP works on GPRS, EDGE, EVDO, UMTS and of course Wifi, so consumers are not limited by their handset or subscription.
The team behind LTP has also been instrumental in contributing to SIP and were among the earliest authors of the SIP protocol. LTP is a further development and derivative of SIP and addresses many of the deficiencies of SIP, e.g. NAT traversal, support for presence and IM etc.
LTP has been some eight years in the making and has carried some 300 million minutes of PSTN terminated traffic to date. It is now a robust and well tested protocol.
LTP will be released into open source as soon as our trade mark application is finalized.
Technology
- State-of-the-art, third generation signaling protocol
- Very small stack - just 3k lines of code compared to naked SIP which is 25K lines of code
- Binary message format
- Integrated - Presence, Voice, Messaging, (TFTP File transfer)
- NAT/firewall friendly
- Unique distributed presence management
- Out of session media
- Industrial grade encryption
- Flexible codec support - GSM, Speex
- Small footprint - can be built into OSE phones with sufficient processor capacity to support speech coding
- Entire client less than 100kB
- Needs approx. 150-200 MIPS for Codec
- Java Midlet for phones that lack processor capacity
- Can be put into any device which has IP connectivity and audio support - portable gaming consoles, tablet devices, bluetooth Headset
- LTP will shortly be released into Open Source under GPL
The LTP network
(Click on the image for a larger view)
Hummi
Meet "Hummi" - LTP's hummingbird mascot. She is modelled after the "Bee Hummingbird" (Mellisuga helenae) - the smallest of all birds. The Bee Hummingbird weighs around 1,8 grams and beats its wings 80 times per second.
Being the smallest and most lightweight of all birds, Hummi truly represents the flexible nature of LTP.
Read more about Hummingbirds at Wikipedia »