ZTE Corporation ZXHNH108NV21 ユーザーズマニュアル
ZXHN H108N User’s Manual
16
unauthorized modifications to this equipment. Such modifications could void
the user authority to operate the equipment.
the user authority to operate the equipment.
The ringer equivalence number (REN) is used to determine how many devices
can be connected to your telephone line. In most areas, the sum of the RENs of
all devices on any one line should not exceed five (5.0). If too many devices
are attached, they may not ring properly.