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Administrator’s Guide for VP530 IP
Video
Phone
292
Step
Action
Description
F6
486 Busy Here—Proxy Server
to User A
The proxy server forwards the 486 Busy
Here response to notify User A that User
B is busy.
F7
ACK—User A to Proxy Server
User A sends a SIP ACK to the proxy
server. The SIP ACK message indicates
that User A has received the 486 Busy
Here message.
F8
ACK—Proxy Server to User B
The proxy server forwards the SIP ACK
to User B to indicate that the 486 Busy
Here message has already been
received.
Summary of Contents for VP530 IP
Page 1: ......
Page 4: ......
Page 12: ......
Page 111: ...Configuring Basic Features 99...
Page 153: ...Configuring Advanced Features 141...
Page 171: ...Configuring Security Features 159...
Page 182: ...Administrator s Guide for VP530 IP Video Phone 170 Phonebook on page 266...
Page 183: ...Resource Files 171...
Page 194: ...Administrator s Guide for VP530 IP Video Phone 182 3 Click OK to confirm the resetting...
Page 195: ...Troubleshooting 183...
Page 344: ...Administrator s Guide for VP530 IP Video Phone 332...