System information

BSR 64000 Configuration and Management Guide
14-12
To return to the default, which is payload scrambling, use the pos scramble command
in Interface Configuration mode, as shown below:
BSR(config-if)#pos scramble
Changing the SONET Framing Type
The BSR framing type default is SONET. Follow these steps to change the framing
type:
1. To set the framing type for SDH, use the pos framing sdh command
in Interface
Configuration mode, as shown in the following example.
MOT(config-if)#pos framing sdh
2. To set the framing type back to SONET, use the pos framing sonet command in
Interface Configuration mode, as shown below:
MOT(config-if)#pos framing sonet
Changing the CRC Function on the POS Interface
Cyclic Redundancy Check (CRC) error-checking uses a calculated numeric value to
detect errors in transmitted data. The values 16 and 32 indicate the number of check
digits per frame for calculating the frame check sequence (FCS). Both the sender and
receiver must use the same setting. The default is 16. To set the number of bits used
for CRC on the POS interface, use the crc command in Interface Configuration mode,
as shown below:
MOT(config-if)#crc [16 | 32] <big-endian>
where:
16 is the bit size.
32 is the bit size.
big-endian is the byte ordering. If nothing is specified “little-endian” is assumed.