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next-server specifies the FQDN of the TFTP server, it has to be the name of the machine on which sipXconfig is running since it will contain both firmware (.cmp) and configuration (.ini) file.
The MAC address of the gateway has to be specified in hardware ethernet line. The same address is used to create the .ini file name specified in filename line.
host name is not used by sipXconfig at the moment but it probably makes sense to use the same name in sipXconfig UI.

BootP for

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Microsoft Windows DHCP Server

Important: This is untested: can someone verify that it actually works and upload UI screenshot

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Stand-Alone Survivability Feature

See here AudioCodes 5.40 Stand-Alone Survivability and AudioCodes 5.80a Stand-Alone Survivability for details on using the Stand-Alone Survivability (SAS) Feature.

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