CONFIG_NETtel is not available for thedefaultarchitecture x86.
Result is shown for architecture m68k

SecureEdge/NETtel board support

modulename: nettel.ko

configname: CONFIG_NETtel

Linux Kernel Configuration
└─>SecureEdge/NETtel board support
In linux kernel since version 2.6.12  
Support for the SnapGear NETtel/SecureEdge/SnapGear boards.

source code: