In telephony, the local loop is the physical link or circuit. Where is the local loop located?
A.
Between the loopback interfaces of two VoIP routers
B.
Between phones and the central office (CO) switch
C.
Between two PBXs
D.
Between two PSTN switches
Explanation:
The local loop is the pair of wires that runs from the CO to the home or business office.
Cisco Press CCDA 640-864 Official Certification Guide Fourth Edition, Chapter 14