R3303-HP HSR6800 Routers Interface Command Reference

223
Views
CPOS interface view
Default command level
2: System level
Parameters
t3-number: Number of a T3 channel on the current CPOS interface, in the range of 1 to 3.
dsu-mode: Sets the DSU mode for fractional T3 (FT3).
Table 31 FT3 DSU mode options
Keyword DSU mode (vendor) Subrate range
Total number of
subrate
g
rades
0 Digital Link
300 to 44210 kbps in steps of
300746 bps
147
1 Kentrox
1500 to 35000 kbps in steps
of 1500000 bps; 44210 kbps
57
2 Larscom
3100 to 44210 kbps in steps
of 3157835 bps
14
3 Adtran
75 to 44210 kbps in steps of
75187 bps
588
4 Verilink
1500 to 44,210 kbps in steps
of 1,578,918 bps
20
subrate sub-number: Sets the FT3 subrate, in the range of 1 to 44210 kbps.
Usage guidelines
FT3 (also called subrate T3) is a non-standard T3 application. Available FT3 subrate ranges and the
number of subrate grades vary with vendors. You can use the ft3 command to configure your device to
be compatible with the FT3 DSU modes listed in Table 31.
W
hen you use the ft3 command, note the following:
• The subrates available in the DSU mode set with the ft3 dsu-mode command are discrete and the
subrate set with the ft3 subrate command is approximate rather than exact. After you set a subrate,
the T3 interface works out the precise subrate (in bps) closest to the approximate subrate within the
subrate range available in the specified DSU mode. This calculated precise subrate is the one
actually applied to the hardware circuit.
• You can use the display interface serial interface-number:0 command to display the DSU mode,
configured subrate, actual rate, and baud rate of a T3 interface. The actual rate of the T3 interface
is the pure data bandwidth excluding the bandwidth for overhead bytes. The baud rate of the T3
interface, 44736 kbps, is the actual rate of the T3 circuit, including the bandwidth for the overhead
bytes.
Examples
# Configure T3 channel 1 on interface CPOS 2/0/0 to operate in DSU mode 3 and set its rate to 3000
kbps.
<Sysname> system-view
[Sysname] controller cpos 2/0/0
[Sysname-Cpos2/0/0] ft3 1 dsu-mode 3