| SIP - the open standard, and Skype -
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| | developers. It has number of features
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| closed. But Skype adapts for real
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| | which distinguish it from SIP.
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| conditions better, SIP it is focused on
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| | First, report Skype is focused on a
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| conditions relatives to ideal.
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| | p2p-network (Peer-To-Peer.) Skype works
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| Report SIP, Session Interaction Protocol
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| | by a principle self-organizing
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| (RFC 3621) is open by a cavity for
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| | distributed(allocated) p2p networks in
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| developers. It(he) is well enough thought
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| | which there are no constant servers. The
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| over, and at the present moment is the
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| | role of servers is carried out by the
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| most popular as it is simple enough for
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| | participants of a network having direct
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| hardware realization and, besides the
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| | IP-address and the wide channel of
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| organization of voice sessions of
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| | connection to the Internet.
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| communication(connection), gives a
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| | Second, in report Skype enciphering is
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| number(line) of additional opportunities.
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| | without fail applied. It is the compelled
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| Into problems(tasks) of report SIP enters
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| | measure caused by p2p-structure of
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| only to establish and coordinate
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| | network Skype: the traffic passes through
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| communication(connection), and it is not
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| | units to which should not trust.
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| necessary that this
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| | Thirdly, Skype has the high
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| communication(connection) was voice is
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| | resourcefulness allowing it(him) to work
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| there can be any stream of the data in
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| | even on limited connections to the
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| real time - video, the multimedia data,
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| | Internet. Skype it is focused on the
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| interactive service.
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| | broad audience of users of the different
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| Commands(teams) of the report remind
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| | countries and interventions in work of a
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| HTTP, down to separate details.
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| | network with the purpose to forbid VoIP
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| Key feature SIP is client - server
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| | for him(it) are less terrible, because
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| opiented. Here it is meant, that at any
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| | it(he) is prepared for this. It is known,
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| network of a SIP-telephony there is a
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| | that report Skype has ability to find
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| server (GateKeeper).
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| | ways to transfer the voice information.
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| Report SIP is well focused for work in
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| | For example, if the necessary range of
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| local networks and on good Internet -
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| | ports of report UDP is closed (usually
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| channels. But what will take place when
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| | report Skype uses port UDP 40150), Skype
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| the Internet -
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| | is switched to use of free TCP-ports,
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| про

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| | down to obviously open 80 ports (HTTP),
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| 74;айд&
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| | and if it is necessary, will use
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| #1077;р on what or the reasons
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| | connection through HTTP-proxy. It means,
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| does not wish, that users could carry out
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| | that Skype will work practically
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| bells through SIP? For achievement of the
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| | everywhere where Internet - sites "open".
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| purpose to it "will cut" enough UDP
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| | There are bases to consider, that Skype
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| packages with value of port 5060 that SIP
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| | uses the modified version of the standard
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| has ceased to work normally. There are
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| | SIP-report. In other words, SIP was taken
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| ways to avoid a similar arbitrariness,
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| | for a basis of report Skype and it is
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| however it intervention in work of the
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| | modified, due to what Skype has
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| report demand, forcing to forget about
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| | competitive before operators of a
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| compatibility with the standard
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| | SIP-telephony - cheapness support a
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| equipment.
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| | user's network and ability to work almost
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| The report used Skype always was and
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| | everywhere and in any conditions.
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| continues to remain closed from foreign
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