User's Manual
HT8000-I/HT8000-II/HT8000-VI
2 Hardware Architecture
Version 1.4(Oct.2019)
Beijing Huahuan Electronics Co., Ltd.
81
1.
PRI: The optical path with high-priority
RO interface (connecting to RX interface of UNI-side device) outputs optical
signal which received by NNI-side protection channel RI2 to the UNI-side PRI
channel RX interface.
TI interface (connecting to TX interface of UNI-side device) inputs UNI-side TX
signal and transmits it to TO2 interface of NNI-side protection channel.
2.
SEC: the optical path with low-priority
RO interface (connecting to RX interface of UNI-side low-priority device) service
is interrupted.
TI interface (connecting to TX interface of UNI-side low-priority device) service
is interrupted.
When the working channel is in non-return mode, after the working channel is
restored, the protection channel will not be switched to the working channel.
When the working channel is in return mode, the protection channel is switched to
the working channel according to the return time after the working channel is
restored.
2.2.35 Single CH 1:1 OLP Card (P1R1-MP)
P1R1-MP is a 1:1 optical line protection card. It supports automatic
/forced/manual switching modes in case of service interruption caused by
fiber line deterioration or interruption.
P1R1-MP supports non-return mode and return mode. The NNI-side
working line, protection line and return time can be set.
P1R1-MP card provides the interface between the system and the network
management system; works with the network management system to
manage each card of the equipment and realizes the intercommunication
between the equipment.
P1R1-MP card is used to process 1-channel optical monitoring channel and
monitor the received optical signals. The OSC interface uses LC dual-fiber
SFP module or single-fiber SFP module.
On the front panel of P1R1-MP card, there is an NM interface, a
CONSOLE interface, two OSC optical interfaces and six LEDs. The PRI
channel and SEC channel on the UNI side respectively provide an RO