Telephone switching equipment, namely, PBX (private branch exchanges), PABX (private automatic branch exchanges), computer controlled PBX (private branch exchanges), and remote PBX (private branch exchanges); Telecommunications devices, namely, switches used for VoIP (voice over internet protocol), VoIP (voice over internet protocol) interface boards, VoIP (voice over internet protocol) processing software, VPN (virtual private network) gateways, PSTN (public switched telephones network) gate...