Cortelco 2747 Manuale Utente

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incoming calls. If the “Proxy On” flag is “No”, then the IP Phone does not 
need to register. In this case, you can call the IP address of another IP Phone 
directly. 
 
(c).    When the IP Phone is configured to use a gatekeeper or proxy server, but 
has not yet registered successfully or failed, the LCD screen will display the 
following message: 
 
Registering (number) 
                  Date        Time   
 
When the “Registering” message is displayed, the IP phone can not 
make any calls.    The menu selection and the on-hook / off-hook function 
will work OK. 
 
  (d).    If the IP Phone failed in registering to a H.323 gatekeeper or SIP proxy 
server, the LCD screen will display the following message: 
 
RegFail (failed message) 
                  Date        Time   
 
The failed message could be one of the following: 
 
(1).  Duplicate: this means that the registering number is duplicated with 
others, or the IP Phone’s previous registration information is still kept 
in the gatekeeper/proxy server if not unregistered last time (this could 
happen when the IP Phone is powered off instead of restarted from the 
menu item). If the previous registration information is not cleared, you 
may need to wait about 4 minutes to let the IP Phone register 
successfully again. 
(2).    Security : this means that the account (username / password / H.323 
ID) is not correct, please check your account again. 
 
 
When the RegFail message is displayed, the IP phone can not make 
any calls. The menu selection and the on-hook / off-hook function will work 
OK.