Values
Value Range
Default Value
2 MHz, 2 Mbit/s
2 Mbit/s
The following table lists the description of each value.
Value
Description
2 MHz
Indicates that the output mode of the external clock source is
set to 2 MHz. That is, the external clock source outputs 2 MHz
clock signals.
2 Mbit/s
Indicates that the output mode of the external clock source is
set to 2 Mbit/s.
Configuration Guidelines
The input mode of the two channels of external clock signals can be set to 2 MHz or 2 Mbit/s.
The default input mode is 2 Mbit/s. In actual application, make sure that the output mode matches
the input mode on the receive end.
Relationship with Other Parameters
None.
Related Information
None.
7.114 External Clock Output Timeslot
Description
The
External Clock Output Timeslot
parameter is used to set the output timeslot for the S1
byte of the external clock source. The external clock source transmits the S1 overhead byte
through certain timeslots. After starting the SSM protocol, make sure that the timeslot for
receiving the S1 byte is consistent with the timeslot for transmitting the S1 byte so that the S1
byte can be received correctly.
Impact on the System
When the SSM protocol is enabled on the NEs, setting the S1 byte may result in the switching
of the clock sources. This may bring bit errors to the service when clock jitters occur.
OptiX OSN 550 Multi-Service CPE Optical Transmission
System
Configuration Guide
7 List of Parameters
Issue 02 (2011-06-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
7-91