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3Com
®
VCX V7111 VoIP Gateway User Guide
where Username is used instead of phone number in From/To headers. The registration
request is resent according to the
RegistrartionTimeDivider
parameter. For example, if
RegistrationTimeDivider
= 70 (%) and Registration Expires time = 3600, the gateway
resends its registration request after 3600 x 70% = 2520 sec. The default value of
RegistrartionTimeDivider
is 50%.
Proxy and Registrar Authentication (handling 401 and 407 responses) using Basic or
Digest methods. Accepted challenges are kept for future requests to reduce the network
traffic.
Single gateway Registration or multiple Registration of all gateway endpoints.
Configuration of authentication username and password per each gateway endpoint, or
single username and password per gateway.
Supported methods: INVITE, CANCEL, BYE, ACK, REGISTER, OPTIONS, INFO,
REFER, UPDATE, NOTIFY, PRACK, SUBSCRIBE and PUBLISH.
Modifying connection parameters for an already established call (re-INVITE).
Working with Redirect server and handling 3xx responses.
Early media (supporting 183 Session Progress).
PRACK reliable provisional responses (RFC 3262).
Call Hold and Transfer Supplementary services using REFER, Refer-To, Referred-By,
Replaces, and NOTIFY messages.
Call Forward (using 302 response): Immediate, Busy, No reply, Busy or No reply, Do Not
Disturb.
Supports RFC 3711, Secured RTP and Key Exchange according to <draft-ietf-mmusic-
sdescriptions-12>.
Supports RFC 3489, Simple Traversal of UDP Through NAT’s (STUN).
Supports RFC 3327, Adding Path to Supported header.
Supports RFC 3581, Symmetric Response Routing.
Supports RFC 3605, RTCP Attribute in SDP.
Supports RFC 3326, Reason header.
Supports RFC 4028, Session Timers in SIP.
Supports network asserted identity and privacy (RFC 3325 and RFC 3323).
Supports RFC 3911, The SIP Join Header
Supports RFC 3911, The SIP Join Header.
Supports RFC 3903, SIP Extension for Event State Publication.
Supports RFC 3953, The Early Disposition Type for SIP.
Содержание VCX V7111
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