AudioCodes Mediant 600 Manual do Utilizador Página 423

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Version 5.4 423 May 2008
SIP User's Manual 7. IP Telephony Capabilities
REGISTER messages are sent to the Registrar's IP address (if configured) or to the
Proxy's IP address. A single message is sent once per device, or messages are sent per
B-channel according to the parameter AuthenticationMode. There is also an option to
configure registration mode per Trunk Group using the TrunkGroupSettings table. The
registration request is resent according to the parameter RegistrationTimeDivider. For
example, if RegistrationTimeDivider = 70 (%) and Registration Expires time = 3600, the
device resends its registration request after 3600 x 70% = 2520 sec. The default value of
RegistrationTimeDivider is 50%.
If registration per B-channel is selected, on device startup the device sends REGISTER
requests according to the maximum number of allowed SIP dialogs (configured by the
parameter NumberOfActiveDialogs). After each received response, the subsequent
REGISTER request is sent.
7.13 Configuration Examples
7.13.1 SIP Call Flow
The SIP call flow (shown in the following figure), describes SIP messages exchanged
between two devices during a simple call. In this call flow example, device (10.8.201.158)
with phone number ‘6000’ dials device (10.8.201.161) with phone number ‘2000’.
Figure 7-4: SIP Call Flow
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