NTBN52PA Nortel Cornerstone.2 Line Indoor Voice Port (Refurbished)
Voice Port Configuration Guide, Cisco IOS Release 15M&T - Voice Port Configuration Overview [Cisco IOS 15.4M&T] - Cisco
Voice USOC Patch Panel with 48 Ports and 2 RMS | ICC
VPOP NID Installation
Configuring Analog Voice Ports - Voice over IP
Labelling scheme for voice & data ports: is it better to just name both port types in one big sequence and not make a distinction between the two on the wall plates