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Yealink SIP-T2XP Administrator's Guide

Yealink SIP-T2XP
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Administrators Guide for SIP-T2xP and SIP-T19P IP Phones
442
SIP uses six request methods:
INVITEIndicates a user is being invited to participate in a call session.
ACKConfirms that the client has received a final response to an INVITE request.
BYETerminates a call and can be sent by either the caller or the callee.
CANCELCancels any pending searches but does not terminate a call that has
already been accepted.
OPTIONSQueries the capabilities of servers.
REGISTERRegisters the address listed in the To header field with a SIP server.
The following types of responses are used by SIP and generated by the IP phone or the
SIP server:
SIP 1xxInformational Responses
SIP 2xxSuccessful Responses
SIP 3xxRedirection Responses
SIP 4xxClient Failure Responses
SIP 5xxServer Failure Responses
SIP 6xxGlobal Failure Responses
The following figure illustrates the scenario of a successful call. In this scenario, the two
end users are User A and User B. User A and User B are located at Yealink SIP IP
phones.
The call flow scenario is as follows:
1. User A calls User B.
2. User B answers the call.

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Yealink SIP-T2XP Specifications

General IconGeneral
BrandYealink
ModelSIP-T2XP
CategoryIP Phone
LanguageEnglish

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