OSN6800 VS OSN8800 (STG board)

Chenxintao · Created Jun 9, 2020 07:51:41

Hello, friend!

OptiX OSN 8800 V100R002 and later versions use synchronous systems. All service boards and cross-connect boards must be synchronized (with the same frequency and frame header aligned). Therefore, a unique reference clock and frame header are required. Each service board outputs services based on the clock and frame header of the clock board, to meet the requirements for intra-frequency and frame header alignment, STG boards must be configured for OptiX OSN 8800 V100R002 and later versions. Otherwise, services cannot be groomed in a centralized manner. The OptiX OSN 6800 is an asynchronous system and does not have a unified clock and frame header requirements. Therefore, the STG board is not required.

Thanks!

wissal · Created Jun 9, 2020 07:54:21

Hello,

In OSN8800

The STG board is mainly used to lock the reference clock source and provide signals and frame signals to the system.

For detailed functions and features, refer to Table 1.

**Table 1** Functions and features of the STG board
Function and Feature	Description
Basic function	Locks the reference clock source. Provides the system with ITU-T clock signals that comply with G.813 and G.823 and frame signals. Synchronizes the time of an NE with the time of the upstream system.
Active/standby switching function	The STG board uses a 1+1 hot backup scheme. The two STGs serve as mutual backups. When both of them are normal, one of them functions as the active board, and the other functions as the standby board. Service boards select the clock source according to the status of the two STGs. When the active STG is faulty, an active/standby switching occurs. Then, the standby STG becomes active, and the services boards select the clock from the current active STG according to the status of the two STGs. NOTE: The TN52STG and TN54STG boards can back up each other. That is, a TN52STG board and a TN54STG board can work in 1+1 hot backup mode. The TN13STG and TN11STG (or TN12STG) boards can back up each other. That is, a TN13STG board and a TN11STG (or TN12STG) board can work in 1+1 hot backup mode. The TNK3STG and TNK2STG boards can back up each other. That is, a TNK3STG board and a TNK2STG board can work in 1+1 hot backup mode.
Clock source selection function	Traces the external clock source, service clock source, or local clock source, to provide the synchronization clock source for itself and the system.
Time synchronization function	Synchronizes the time of an NE with the time of the upstream NE.
G.8275.1	Supported.
G.8273.2	Supported. NOTE: Only supported by the TN54STG board of the VER.C.

In OSN 6800

Functions and Features

The STG board is mainly used to lock the reference clock source and provide signals and frame signals to the system.

For detailed functions and features, refer to Table 1.

**Table 1** Functions and features of the STG board
Function and Feature	Description
Basic function	Locks the reference clock source. Provides the system with ITU-T clock signals that comply with G.813 and G.823 and frame signals. Synchronizes the time of an NE with the time of the upstream system.
Active/standby switching function	The STG board uses a 1+1 hot backup scheme. The two STGs serve as mutual backups. When both of them are normal, one of them functions as the active board, and the other functions as the standby board. Service boards select the clock source according to the status of the two STGs. When the active STG is faulty, an active/standby switching occurs. Then, the standby STG becomes active, and the services boards select the clock from the current active STG according to the status of the two STGs. NOTE: The TN52STG and TN54STG boards can back up each other. That is, a TN52STG board and a TN54STG board can work in 1+1 hot backup mode. The TN13STG and TN11STG (or TN12STG) boards can back up each other. That is, a TN13STG board and a TN11STG (or TN12STG) board can work in 1+1 hot backup mode. The TNK3STG and TNK2STG boards can back up each other. That is, a TNK3STG board and a TNK2STG board can work in 1+1 hot backup mode.
Clock source selection function	Traces the external clock source, service clock source, or local clock source, to provide the synchronization clock source for itself and the system.
Time synchronization function	Synchronizes the time of an NE with the time of the upstream NE.

Thanks

Chenxintao · Created Jun 9, 2020 07:51:41

Hello, friend!

OptiX OSN 8800 V100R002 and later versions use synchronous systems. All service boards and cross-connect boards must be synchronized (with the same frequency and frame header aligned). Therefore, a unique reference clock and frame header are required. Each service board outputs services based on the clock and frame header of the clock board, to meet the requirements for intra-frequency and frame header alignment, STG boards must be configured for OptiX OSN 8800 V100R002 and later versions. Otherwise, services cannot be groomed in a centralized manner. The OptiX OSN 6800 is an asynchronous system and does not have a unified clock and frame header requirements. Therefore, the STG board is not required.

Thanks!

wissal · Created Jun 9, 2020 07:54:21

Hello,

In OSN8800

The STG board is mainly used to lock the reference clock source and provide signals and frame signals to the system.

For detailed functions and features, refer to Table 1.

**Table 1** Functions and features of the STG board
Function and Feature	Description
Basic function	Locks the reference clock source. Provides the system with ITU-T clock signals that comply with G.813 and G.823 and frame signals. Synchronizes the time of an NE with the time of the upstream system.
Active/standby switching function	The STG board uses a 1+1 hot backup scheme. The two STGs serve as mutual backups. When both of them are normal, one of them functions as the active board, and the other functions as the standby board. Service boards select the clock source according to the status of the two STGs. When the active STG is faulty, an active/standby switching occurs. Then, the standby STG becomes active, and the services boards select the clock from the current active STG according to the status of the two STGs. NOTE: The TN52STG and TN54STG boards can back up each other. That is, a TN52STG board and a TN54STG board can work in 1+1 hot backup mode. The TN13STG and TN11STG (or TN12STG) boards can back up each other. That is, a TN13STG board and a TN11STG (or TN12STG) board can work in 1+1 hot backup mode. The TNK3STG and TNK2STG boards can back up each other. That is, a TNK3STG board and a TNK2STG board can work in 1+1 hot backup mode.
Clock source selection function	Traces the external clock source, service clock source, or local clock source, to provide the synchronization clock source for itself and the system.
Time synchronization function	Synchronizes the time of an NE with the time of the upstream NE.
G.8275.1	Supported.
G.8273.2	Supported. NOTE: Only supported by the TN54STG board of the VER.C.

In OSN 6800

Functions and Features

The STG board is mainly used to lock the reference clock source and provide signals and frame signals to the system.

For detailed functions and features, refer to Table 1.

**Table 1** Functions and features of the STG board
Function and Feature	Description
Basic function	Locks the reference clock source. Provides the system with ITU-T clock signals that comply with G.813 and G.823 and frame signals. Synchronizes the time of an NE with the time of the upstream system.
Active/standby switching function	The STG board uses a 1+1 hot backup scheme. The two STGs serve as mutual backups. When both of them are normal, one of them functions as the active board, and the other functions as the standby board. Service boards select the clock source according to the status of the two STGs. When the active STG is faulty, an active/standby switching occurs. Then, the standby STG becomes active, and the services boards select the clock from the current active STG according to the status of the two STGs. NOTE: The TN52STG and TN54STG boards can back up each other. That is, a TN52STG board and a TN54STG board can work in 1+1 hot backup mode. The TN13STG and TN11STG (or TN12STG) boards can back up each other. That is, a TN13STG board and a TN11STG (or TN12STG) board can work in 1+1 hot backup mode. The TNK3STG and TNK2STG boards can back up each other. That is, a TNK3STG board and a TNK2STG board can work in 1+1 hot backup mode.
Clock source selection function	Traces the external clock source, service clock source, or local clock source, to provide the synchronization clock source for itself and the system.
Time synchronization function	Synchronizes the time of an NE with the time of the upstream NE.

Thanks

OSN6800 VS OSN8800 (STG board)

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