This Standard applies to Customer Equipment (CE) that is designed or intended for connection to:

(a) is designed or intended for connection to a Telecommunications Network via a metallic local loop interface; and

(b) is designed or intended to include one or more of the following capabilities:

i. DC power feeding or signalling.

ii. Operation in the low frequency AC band, below 300 Hz.

iii. Operation in the voice frequency band.

iv. Operation above the voice frequency band up to 20 kHz.

CE is not excluded from the scope of this Standard by reason only that it is capable of performing functions additional to those described in this Standard.

Note: Requirements for CE designed or intended to interwork with the PSTN for DC loop seizure and clearing, low frequency AC ring signalling, and decadic or DTMF address signalling etc. are defined in AS/ACIF S002 [3].