Which type of LAN cable to be use for your office computer networking? The very common LAN cables in market are CAT 5e and CAT 6. Unshielded Twisted Pair Categories 5 Enhanced (CAT 5e) and CAT 6 are to be used for distance up to 100meter. CAT 6 cables can cater for IP phone setup (Internet telephony) where voice is converted to digital signal to be sent over to broadline as data. The digital data will be transmitted through Internet. CAT 6 cable also can serve as a backbone for a small group of workstations up to 8 persons for basic e-mail and web browsing.