(3)Gateway
User has to press the default gateway IP which meets IP Address on the IP Phone keypad.
(4)Primary DNS
User can set IP address of Domain Name Server, then for Gatekeeper and Phone book can enter URL address or IP address. Please refer to 5.9 [pbook] and 5.13 [h323] command.
(5)Secondary DNS
User can set IP address of secondary DNS, once primary DNS cannot work normally, IP Phone can refer to secondary DNS.
(6)Gatekeeper
User has to offer one available Gatekeeper server IP Address and set this IP Address on the IP Phone keypad.
(7)Second Gatekeeper
IP Phone provide alternative Gatekeeper feature, if IP Phone can’t register to Main Gatekeeper for 10 times, it will try to register to the Second Gatekeeper. When main Gatekeeper can’t work normally, IP Phone can still keep working with Second Gatekeeper
(8)SNTP Configuration
SP5100 IP Phone supports that user can assign one SNTP (Simple Network Time Protocol) Server in your country by setting in IP Phone. User has to offer one available SNTP server IP Address and set this IP Address on the IP Phone keypad.
(A)SNTP Mode: User can set different time can set SNTP function too be on/off/broadcast, which means IP Phone will capture current time from SNTP server or not, or broadcast to find a SNTP server and capture current time.
(B)SNTP Server: User can specify a SNTP server for IP Phone to capture current time.
(C)Time Zone: User can set time zone according to the location IP Phone is. For example, in Taiwan the time zone should be set as
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