Four sides of a rectangular bag-like separator 10 are composed of two adjacent separator thermo-bonding sides 10a and 10c where thermo-bonding portions are formed and of two adjacent insertion opening sides 10b and 10d forming one insertion opening 11 into which an electrode 30 can be inserted. Survivability components are activated within the base station and the mobile terminal to operate in a survivability mode. The method of the present invention also forms Ni monosilicide films without experiencing any dependence of the dopant type concentration within the Si-containing substrate that exists with the prior art NiSi films.