Dominio Telefonico con SIP Witch
Sommario
Questa caratteristica di progetto, alternativa a Skype e basata interamente su software libero, propone seguendo gli standard IETF, supporto a comunicazioni peer-to-peer dirette, il più possibile sicuro usando il protocollo ZRTP, e che non necessiteranno di service provider intermedi.
Infatti è usato il DNS per la risoluzione diretta dell'URI del SIP ed ogni utente o organizzazione costrusce la propria rete di collegamento direttamente, partendo dalle informazioni fornite dal servizio sipwitch usato per rispondere e trasferire le chiamate degli utenti/postazioni e usando client VoIP standard come Empathy, Twinkle, SIP Communicator, dispositivi SIP locali, ecc.
SIP Witch a breve potrà rivelarsi una chiave di successo del FSF che da tempo si batte per promuovere la sostituzione di Skype con software libero, e questa feature è consistente con tale obbiettivo.
Progettista
- Nome: David Sugar
- email: dyfet@gnutelephony.org
Current status
- Targeted release: Fedora 13
Per informazioni aggiornate sullo stato corrente di Dominio Telefonico con SIP Witch, visitare la pagina originale.
Descrizione dettagliata
GNU SIP Witch is to SIP much like what Jabber is for xmpp. This feature is to setup, deploy, and manage sipwitch (or general VoIP) services in a manner consistent with other core Fedora services as well as to create a free public communication network anyone can participate in directly and securely to replace Skype. Long term goals to further VoIP integration in Fedora can include integrating phone service management with user account creation, use of auto-activating SIP user agents for SIP uri's (as a selectable preferred GNOME application much like email and web browser), address book integration to VoIP, and many other areas that touch widely upon Fedora and the overall desktop user experience. This particular spec however focuses on a more limited feature for the F13 release timeframe that is also a FSF priority initiative.
This feature essentially requires a user to be able to easily setup and deploy a GNU sipwitch server and connect it to manage one or more local SIP user agents, devices, or existing services. This can be be done directly on individual workstations, on a public facing server acting as a SIP agent for an entire domain and organization, or some combination of both. SIP Witch also will mitigate NAT issues on behalf of local SIP clients using the service to call remote users, thereby simplifying the deployment of such services. The goal is to be able to setup and deploy sipwitch and softphones to use it with much the same simplicity that one does for Skype, as well as to offer more extensive features when using sipwitch as a local SIP phone system for SIP devices.
Since SIP Witch only mitigates SIP and will soon offer media packet forward RTP for SIP devices behind a NAT, while still establishing direct peer-to-peer communication between endpoints, it has very little overhead and no issues with patent encumbered codecs. Because peer to peer media connections are used between endpoints, sipwitch can operate directly with, manage, and scale "Social Key Verification" systems such as ZRTP. This offers the ability to use verifiable high-grade end-to-end media encryption to easily establish and maintain "secure" VoIP calls with remote users, something not possible with solutions like Asterisk which do not offer media peering at connection and require central decryption. This means trustworthy intercept-free calling can become possible for larger organizations in a very simple way.
Part of the focus in F13 is on completing sipwitch NAT and then enabling a simple means for users to minimally configure and use the service. This goal will be served by a simple system "admin" application (in GNOME menus under system->administration) which will offer a form with basic questions such as the "calling domain", information about publicly appearing address for NAT, and the basic dialing plan for local SIP user agents or devices. It will include a simple tool to transform a local user account into a SIP user. A patch may also be added to the Twinkle SIP softphone to add a local SIP service such as sipwitch as a wizard "profile".
Since SIP Witch tethers SIP clients and intercommunications entirely through standard SIP protocols, SIP Witch can also be used in conjunction with and to enhance existing IP-PBX solutions such as Asterisk. There is also a sipwitch plugin that allows one to use SIP Witch to manage calls peer-to-peer to "secure" destinations using secure extension numbers while cross-registering sipwitch managed extensions to an insecure IP-PBX such as asterisk so that people can place calls to and receive calls from insecure destinations as well. This use case is outside of this initial spec, but will likely be elaborated on post F13.
Vantaggi per Fedora
Further enabling Fedora users to more easily communicate and collaborate realtime in voice and video worldwide in both freedom and as desired privately, and without the need of mitigating service providers. Enabling any organization and enterprise to deploy secure scalable realtime VoIP networks using Fedora whether for public or private use. Finally, as a back-end infrastructure, this feature is very naturally complimentary to Empathy as a means for users to communicate by empowering the community to create it's own messaging and communication infrastructure directly rather than depending on specific back-end providers like Google, MSN, Yahoo, etc.
Documentazione
Un HowTo di base: HowTo Deploy SIP Witch On Ubuntu
Note di rilascio
The initial release of SIP Witch Domain Telephony will allow you to create and deploy scalable secure VoIP solutions both for managing a local SIP based telephone system and to call remote users over the public Internet without the need of a service provider or central directory service. This offers the freedom to organize and communicate freely and securely, and also free as in cost, too!
Altre informazioni
Per:
- Obbiettivi
- Test Plan
- Esperienza Utente
- Dipendenze
- Progetto corrente
- Commenti e Discussioni
consultare la pagina originale di questo documento.