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3Com VCX V7122/SIP VoIP Gateway User Manual
Supported SIP Features
The VCX V7122/SIP main features are:
Works with or without a proxy, using an internal routing table.
Fallback to internal routing table if communication with the proxy server fails.
Supports two redundant proxy servers. If main the proxy fails, the VCX V7122
automatically switches to the first redundant proxy.
Proxy Registration, such as:
REGISTER sip:proxyname SIP/2.0
VIA: SIP/2.0/UDP 212.179.22.229;branch=z9hG4bRaC7AU234
From: <sip:Username@sipgatewayname>;tag=1c29347
To: <sip:Username@sipgatewayname>
Call-ID: [email protected]
Seq: 1 REGISTER
Expires: 3600
Contact: sip:[email protected]
Content-Length: 0
Where the
proxyname
,
username
and
sipgatewayname
strings are defined in the INI file
(or configured from the Web).
Proxy and Registrar Authentication (handling 401 and 407 responses) using Basic or
Digest methods.
Supported methods: INVITE, CANCEL, BYE, ACK, REGISTER, OPTIONS, INFO, and
REFER.
Modifying connection parameters for an already established call (re-INVITE).
Working with a Redirect server and handling 3xx responses.
Early Media (supporting 183 Session Progress).
PRACK reliable provisional responses (RFC 3262).
Diversion Header (draft-levy-sip-diversion-05.txt).
Call Transfer Supplementary services using REFER, Refer-To, Referred-By, Replaces,
and NOTIFY.
Session Timer (draft-ietf-sip-session-timer-10.txt).
Remote party ID (draft-ietf-sip-privacy-04.txt).
DTMF Payload for DTMF Digits (RFC 2833).
DTMF out of band transfer using INFO method (draft-choudhuri-sip-info-digit-00.txt).
SIP
URL:
sip:
phonenumber
@
IPaddress
(such as [email protected], where 122 is the phone
number of the source or destination) or sip:
phone_number
@
domainname
, such as
Reliable UDP transport, with retransmissions.
Содержание VCX V7122 SIP
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Страница 88: ...88 3Com VCX V7122 SIP VoIP Gateway User Manual General Data Sheet Figure 24 General Data Sheet ...
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Страница 91: ...3Com VCX V7122 SIP VoIP Gateway User Manual 91 Prefix to IP Routing Table Figure 27 Routing Table Data Sheet ...
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