Re: vzdalene telefonovani

Dan B Daniel.Bar na seznam.cz
Úterý Leden 6 15:34:44 CET 2004


================= Původní zpráva =================
Od (From): "Petr Vanicek" <vanicekp na vinnetou.site.cas.cz>
Komu (To): linux na linux.cz
Kopie (Cc):
Předmět (Subject): vzdalene telefonovani
Datum (Date): 6. 1. 2004 16:17
==================================================

> Dobry den,
>
> Mam dotaz, sice malicko mimo, ale snad na moc. Potreboval bych
> zrealizovat vzdaleny pristup k telefonni lince. V miste "A" mam telefon
> a pocitac nejlepe s linuxem a s nejakym hardware treba s modemem. A v
> miste "B" dostupnem prez relativne rychly internet mam take pocitac se
> zvukovou kartou. Videl nekdo software, ktery by umoznil "vzdalene"
> vyuziti telefoni linky v bode A tak aby slo "telefonovat" v bode B.
>

Da se vyuzit SW pro VoIP komunikaci na bazi protokolu SIP nebo H.323.

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Definice:

SIP: " (SIP) A very simple text-based application-layer control protocol. It creates, modifies, and terminates sessions with one or more participants. Such sessions include Internet telephony and multimedia conferences."

H.323: "The ITU-T standard for sending voice (audio) and video using IP on a LAN without QoS. H.323 includes Q.931 for call setup, H.225 for call signalling, H.245 for exchanging terminal capabilities, RTP/RTCP for packet streaming, G.711/G.712 for CODECs, and several other protcols, many of which need to be negotiated to setup a simple voice call.

The complexity of H.323 has lead to the IETF proposing the simpler alternatives SIP and MGCP/Megaco. "

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Soft:

- Pro SIP to PSTN jsem nasel neco tady: http://vovida.org/

"The SIP Residential Gateway (SIPRG) is an open source application based on the Session Initiation Protocol (SIP). The SIPRG is an IP Telephony Gateway that allows a SIP User Agent to make and receive calls between the Public Switched Telephone Network (PSTN) and a SIP-based network such as VOCAL."


- pro H.323 tady: http://www.openh323.org/

"PSTNGw H.323 to PSTN gateway"


Takze, udelejte pruzkum a poslete mi vysledek :)

Dan

____________________________________________________________
SIEMENS C62 již od 1977 Kč.  Dost dobrý důvod pustit svůj starý telefon k vodě! http://ad2.seznam.cz/redir.cgi?instance=68582%26url=http://www.oskar.cz


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