Cortelco 2747 - Manual (Page 27)

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(e). When the IP Phone fails in obtaining an IP address from the DHCP server, the LCD
screen will display the following message :
DHCPFail (number)
Date Time
This means that the IP phone is configured to use DHCP to get an IP
address, but the DHCP procedure failed (cannot find a DHCP server or the
DHCP server rejected the IP assignment). The IP phone can not make any
calls and the on-hook / off-hook functions will not work, you can not hear
any sound on the handset or the speaker. Only the menu selections will
work.
The IP phone will continuously try to get the IP address from the
DHCP server, so, if the DHCP server is responding, the DHCPFail ()
display will change to Hi() display to notify that the IP phone is working
OK.
(f). When the IP Phone is set to use the PPPoE method for network connection,
but has some problem in finding the PPPoE server (ADSL modem), the
LCD screen will display the following message :
PPPoE FindFail(number)
Date Time
This means that the IP phone is configured to use PPPoE to get an IP
address, but the PPPoE procedure failed (can not find a PPPoE server or the
network connection has a problem). The IP phone can not make any calls,
but the menu selection and the on-hook / off-hook function will work OK.
(g). When the IP Phone is set to use the PPPoE method for network connection,
but has some problem in the PPPoE account, the LCD screen will display
the following message:
PPPoE AuthFail (numer)
Date Time
This means that the IP phone is configured to use PPPoE to get an IP
address, but the PPPoE server refuses the connection because the