Electronic Auction - Registration of prices for possible contracting of a telecommunications company to provide switched fixed telephone services (STFC), in the form of unlimited traffic for local and national calls, fixed-fixed and fixed-mobile, including Virtual PABX services, with a cloud structure, based on the SIP protocol and VOIP (Voice over IP) technologies, with the supply of IP telephones on a lending basis, as well as the supply of equipment for the 2nd Railway Battalion. (EXPIRED)