Juniper JUNOSE 10.0.X PHYSICAL LAYER, Руководство по настройке

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Table 13: Definitions for Identifiers for SONET/SDH VT Controllers (continued)
Value Definition Identifier
In SONET mode, tributary group is the
number of the VT group. In SDH mode,
tributaryGroup is the number of the TUG-2
group.
Number of the tributary
group within the path tributaryGroup
In SONET mode, tributaryNumber is the
number of the VT. In SDH mode,
tributaryNumber is the number of the TUG-1
group or tributary unit. Number of the tributary
within the group tributaryNumber
A number in the range 1-24 for T1 or 1-31
for E1 A fraction of a T1 or an E1
line channelGroup
T3 Controllers
You can configure the STS-1 frame to carry a single T3 signal through asynchronous
mapping. As Figure 9 on page 114 shows, T3 on cOCx/STMx interfaces supports the
following options:
■
An unchannelized T3 controller
■
A T3 controller channelized to DS0 (fractional T1). To configure fractional T1
over T3 on cOCx/STMx interfaces, you assign
timeslots (also known as
subchannels ) to the T1 channel. Each T1 channel supports 24 T1 timeslots.
For any configuration, you must identify the path and each controller in the layers
above the path layer. For example, for a T3 controller channelized to T1, you must
identify the path channel, the T3 channel, and the T1 channel. Table 14 on page 116
presents the identifiers for the T3 configurations.
Table 14: Identifiers for T3 Controllers
Example identifier Configuration
1/1 pathChannel/ds3-channel-number Unchannelized T3
1/1/10/15 pathChannel/ds3Channel-number/ds1-channel-number/subchannelNumber T3 channelized to DS0
HDLC
You must configure HDLC over the T3, unframed E1, or fractional T1/E1 line that
you configure on an interface. As Figure 8 on page 113 shows, HDLC is at the top
layer of the interface stack.
Numbering Scheme
A cOCx/STMx interface is identified by the slot/port format, where:
116 ■
Platform Considerations
JUNOSe 10.0.x Physical Layer Configuration Guide