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Yealink Skype for Business HD IP Phones Administrator Guide
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Step
Action
Description
notifies User A that the connection has
been made.
F21
ACK— User A to Proxy Server
User A sends a SIP ACK to the proxy server.
The ACK confirms that User A has received
the 200 OK response. The call session is
now active.
F22
ACK—Proxy Server to User C
The proxy server sends the ACK message to
User C. The ACK confirms that the proxy
server has received the 200 OK response.
Summary of Contents for T46G Skype For Business Edition
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