MicroSIP
Encyclopedia
MicroSIP is a portable SIP
softphone
based on the PJSIP stack available for Microsoft Windows operating systems. It facilitates high quality VoIP calls (p2p
or on regular telephones) based on the open SIP protocol.
MicroSIP falls into the free and open source software
category and is being released under the GNU General Public License
.
It relies on the PJSIP stack and draws on available features.
This software's distinguishing characteristics are:
Session Initiation Protocol
The Session Initiation Protocol is an IETF-defined signaling protocol widely used for controlling communication sessions such as voice and video calls over Internet Protocol . The protocol can be used for creating, modifying and terminating two-party or multiparty sessions...
softphone
Softphone
A softphone is a software program for making telephone calls over the Internet using a general purpose computer, rather than using dedicated hardware. Often a softphone is designed to behave like a traditional telephone, sometimes appearing as an image of a phone, with a display panel and buttons...
based on the PJSIP stack available for Microsoft Windows operating systems. It facilitates high quality VoIP calls (p2p
Peer-to-peer
Peer-to-peer computing or networking is a distributed application architecture that partitions tasks or workloads among peers. Peers are equally privileged, equipotent participants in the application...
or on regular telephones) based on the open SIP protocol.
MicroSIP falls into the free and open source software
Free and open source software
Free and open-source software or free/libre/open-source software is software that is liberally licensed to grant users the right to use, study, change, and improve its design through the availability of its source code...
category and is being released under the GNU General Public License
GNU General Public License
The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....
.
It relies on the PJSIP stack and draws on available features.
This software's distinguishing characteristics are:
- Profile of a lightweight background application
- Small memory footprint (<10 mb RAM usage)
- Strong adherence to the SIP standard
- Support for a number of codecs: SpeexSpeexSpeex is a patent-free audio compression format designed for speech and also a free software speech codec that may be used on VoIP applications and podcasts. It is based on the CELP speech coding algorithm. Speex claims to be free of any patent restrictions and is licensed under the revised BSD...
(narrow band and wideband), G.711G.711G.711 is an ITU-T standard for audio companding. It is primarily used in telephony. The standard was released for usage in 1972. Its formal name is Pulse code modulation of voice frequencies. It is required standard in many technologies, for example in H.320 and H.323 specifications. It can also...
(u-law, a-law), GSM, iLBCILBCInternet Low Bitrate Codec is an open source royalty-free narrowband speech codec, developed by Global IP Solutions formerly Global IP Sound . It was formerly licensed as a freeware with limited commercial use, but since 2011 it is available under an open source license as a part of the open...
, SILKSilkSilk is a natural protein fiber, some forms of which can be woven into textiles. The best-known type of silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity...
(narrow band, wideband and ultra wideband), G.722G.722G.722 is a ITU-T standard 7 kHz wideband speech codec operating at 48, 56 and 64 kbit/s. It was approved by ITU-T in November 1988. Technology of the codec is based on sub-band ADPCM .... - STUNSTUNSTUN is a standardized set of methods, including a network protocol, used in NAT traversal for applications of real-time voice, video, messaging, and other interactive IP communications....
and ICEInteractive Connectivity EstablishmentInteractive Connectivity Establishment is a technique used in computer networking involving network address translators in Internet applications of Voice over Internet Protocol , peer-to-peer communications, video, instant messaging and other interactive media...
NATNatNat or NAT may refer to:* Nat., an abbreviation for Natural* Nat , a Burmese spirit worshipped in Myanmar in conjunction with Buddhism...
traversal - SIP SIMPLESIMPLESIMPLE, the Session Initiation Protocol for Instant Messaging and Presence Leveraging Extensions, is an instant messaging and presence protocol suite based on Session Initiation Protocol managed by the IETF...
presence and messaging