VC12 Path Overhead

Normally, the default values of the overhead bytes to be received or transmitted are adopted to meet the relevant requirements. You need to configure the signal indicator of the J2 or V5 byte in the VC12 path overheads, when the E1 interface board on the local or opposite NE reports the LP_TIM or LP_SLM alarm or when the Ethernet board on the local or opposite NE reports the LP_TIM_VC12 or LP_SLM_VC12 alarm. You can query and set overhead bytes of the VC12 path in this user interface.

Navigation Path

In the NE Explorer, click the board and select Configuration > Overhead Management > VC12 Path Overhead from the Function Tree.

Radio Buttons

Radio button	Description
Display in Text Format	Enables the text format display of overhead bytes.
Display in Hexadecimal	Enables the hexadecimal display of overhead bytes.

Parameters

Field	Value	Description
Object	Equipment that supports the master and slave shelf management: NE name-shelf ID(shelf name)-slot number-board name-port number(port name) Equipment that does not support the master and slave shelf management: NE name-slot number-board name-port number(port name)	Displays the name of the operation object.
J2 to be Received	For example: [16 Bytes]HuaWei SBS	Sets the VC12 Path overhead byte J2 to be received, and a maximum of 15 bytes can be filled in.
J2 Received	For example: [16 Bytes]	Queries the received VC12 Path overhead byte J2.
Signal Label (L1, L2, L3 of V5) to be Received	(0x00)Unequipped or Supervisory-Unequipped, (0x01)Equipped-Non-Specific Payload, (0x02)Asynchronous, (0x03)Bit Synchronization, (0x04)Byte Synchronization, (0x05)Retained Signal Flag, (0x06)O.181 Test Signal Flag, (0x07)VC-AIS Default: (0x02)Asynchronous	Queries the VC12 Path overhead byte V5 to be received. If the local NE reports the LP_SLM or LP_SLM_VC3 alarm, set this parameter according to the V5 byte to be transmitted from the remote NE.
Signal Label (L1, L2, L3 of V5) Received	(0x00)Unequipped or Supervisory-Unequipped, (0x01)Equipped-Non-Specific Payload, (0x02)Asynchronous, (0x03)Bit Synchronization, (0x04)Byte Synchronization, (0x05)Retained Signal Flag, (0x06)O.181 Test Signal Flag, (0x07)VC-AIS	Queries the received VC12 Path overhead byte V5.
Input in Text Format	For example: HuaWei SBS	Enters the overhead bytes. When setting overhead bytes in text mode, use only ASCII characters.
Byte Mode	Single byte, 16-byte (first byte created automatically), 64-Byte Mode (Synchronization Bit 0x0D,0x0A), 64-byte (without synchronization bit), Disable Mode	Sets byte mode for the overhead byte.