SONET sub-channel syntax

Syntax examples

The NFM-P uses the following SONET syntax for the STS-1 sub-channel:

card slot/daughtercard/port.STS1-[STS3#].[STS1#]

DS3 channels from an STS-1 sub-channel use the following syntax:

slot/daughtercard/port.DS3-[STS3#].[STS1#] 

DS1 channels from a DS3 channel use the following syntax:

slot/daughtercard/port.DS1-[STS3#].[STS1#].[DS1#]

E1 channels from a DS3 channel use the following syntax:

slot/daughtercard/port.DS1-[STS3#].[STS1#].[E1#]

VT15 or VT2 from a VT group use the following syntax:

slot/daughtercard/port.VTG#-[STS3#].[STS1#]

DS1 channels from a VT15 or VT2 use the following syntax:

slot/daughtercard/port.DS1-[STS3#].[STS1#].[VT15#] or [VT2#}.[VTG#].[DS1#]
Table 16-4: Example of SONET sub-channel syntax for an OC-12 port

Syntax

Description

Additional information

Channel 1/1/1.sts1-2.2

1/1/1 is the slot number/daughtercard number/port number

2 is the STS-3 number (1 to 4)

.2 is the STS-1 number (1 to 3)

The sts1 parameter is 2.2 which means that it is the fifth STS-1. There are four STS-3s for an OC-12 and each STS-3 has three STS-1s such that the fifth STS-1 is the second STS-1 of the second STS-3.

Channel 1/1/1.ds3-2.2

.ds3-2 is the STS3 number (1 to 4)

.2 identifies the STS-1 number (1 to 3)

Identifies the DS3 channel and shows how the sts1 level acts as a place holder for the DS3

Channel 1/1/1.ds1 2.2.25

.ds1-2.2.25 identifies a DS1 channel (1 to 28) on the DS3

The DS1 is configured on the DS3.

Channel 1/1/1.e1 2.2.21

.e1-2.2.21 identifies a E1 channel (1 to 21) on the DS3

The E1 is configured on the DS3.

Channel 1/1/1.DS0Grp-2.2.20.5

.DS0Grp-2.2.20.5 identifies one of the DS0 channel groups: 1 to 28 for DS1; 2 to 32 for E1

The DS0 is configured on the DS1 or E1 channel.

Channel 1/1/1.ds1 2.2.3.18

ds1 2.2.3.18 identifies a DS1 channel on the VT15 or VT2 payload, where 3 is the VT group.