COMSPHERE 3600 Series Data Service Units
6-52
July 1999
3610-A2-GB91-90
Table 6-14
Port Speed Configuration Options for DSU with TDM *
Prt1( 9.6): 9.6
Next 64 56 48 38.4 32 28.8 19.2 18.8 18.0 16.8 14.4
12.0 9.6 9.2 8.4 7.2 4.8 4.4 4.0 2.4 2.0 1.2 Disab Prev
Port 1 Speed. Primary data rate in kbps on Port 1. (Must be set to the same value in the remote DSU.)
NOTE: Port Pairs (Ports 1 and 2, 3 and 4, or 5 and 6) can be configured to operate with any combination of
data rates with the following exceptions:
One Port of Pair
Other Port of Pair
18.8
Any rate except 9.2 or 4.4
9.2
Any rate except 18.8 or 4.4
4.4
Any rate except 18.8 or 9.2
64 to
—
Sets port primary speed to one of 18 operating rates.
1.2 kbps
Disab
—
Sets port primary speed to 0 bps.
Choosing a primary speed for Port 1 and pressing Next brings up the speed selection menu for Port 2.
Continue selecting port speeds until the primary speeds for all six ports have been chosen. (The default for
Ports 2—6 is Disab.)
1
Option Verification: For all ports, the DSU verifies that the sum of the individual port speeds does not
exceed the primary aggregate speed set in the DSU’s Rate(Kbps) configuration option. If the sum of the port
speeds equals the primary aggregate rate, an underspeed port selection is required.
Underspeed: Disab
Next Disab Prt1 Prt2 Prt3 Prt4 Prt5 Prt6 Prev
Underspeed Port. Selects which port is run slightly underspeed to allow for in-band framing and in-band
secondary channel transport, if used. If more than one port is active, including the in-band secondary
channel transport and the sum of the speeds (not included in the in-band secondary channel transport)
equals the primary aggregate speed, then one synchronous port must run underspeed. The number of bits
per second used for in-band framing is 10. The in-band secondary channel transport speed is set in 2nd
Chan(bps) and, if used, includes the 10 bps in-band framing. A port used for asynchronous operation may
not be set for underspeed.
NOTE: Underspeed cannot be used with 4.4, 9.2, and 18.8 kbps data rates.
Disab
—
No port runs underspeed during primary operation.
Prt1 to —
Selected port runs underspeed during primary operation. Ports 3—6 do not appear
Prt6
when a 2-port TDM/Flex is installed.
Option Verification: The DSU verifies that an underspeed channel is selected if the sum of the port speeds
equals the primary aggregate speed.
1
Port speeds in DSD and FEP port-sharing groups are only counted once per group when calculating used
bandwidth.
* Only appears when MUX Funct is set to TDM. Refer to
Port Speed Configuration Options for DSU with MCMP
(Table 6-15) if MUX Funct is set to MCMP.
Содержание COMSPHERE 3610
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Страница 263: ...Troubleshooting G 3 3610 A2 GB91 90 July 1999 Figure G 2 No Signal NS Condition Troubleshooting ...
Страница 265: ...Troubleshooting G 5 3610 A2 GB91 90 July 1999 Figure G 4 Out of Frame OOF Condition Troubleshooting ...
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