Port Speed Configuration Options For Dbm With Tdm Or Mcmp - Paradyne COMSPHERE 3610 Operator's Manual

COMSPHERE 3600 Series Data Service Units

Port Speed Configuration Options for DBM with TDM or MCMP

Prt1( 9.6): 9.6
Next 56 48
9.6 9.2 8.4
Port 1 Speed . Backup data rate in kbps on Port 1. (Must be set to the same backup data rate in the remote
DSU.) Port speeds 56, 32, 28.8, 18.8, 18.0, 9.2, 8.4, 4.4, 4.0, and 2.0 kbps are invalid for MCMP mode.
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
18.8
9.2
4.4
56 to — Sets port backup speed to one of 17 operating rates. For a DSU with a Switched 56 DBM, all
1.2 kbps 17 operating rates are available. For a DSU with a 14.4 kbps DBM, 14.4 kbps—1.2 kbps are
available, and for a DSU with a 12.0 kbps DBM, 12.0 kbps—1.2 kbps are available.
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 for each port until the primary speeds for all six ports have been chosen.
(The default for Ports 2—6 is Disab.)
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
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), then
one synchronous port must run underspeed if the sum of the port speeds equals the primary aggregate
speed. 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 dial backup.
Prt1 — Selected port runs underspeed during dial backup. Ports 3—6 do not appear when a 2-port
to Prt6 TDM/Flex or MCMP/Flex is installed.
Option Verification: The DSU verifies that an underspeed channel is selected if the sum of the port speeds
equals the backup 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
(Table 6-14) or with MCMP (Table 6-15).
6-54
Table 6-16
38.4 32 28.8
7.2 4.8 4.4 4.0
Other Port of Pair
Any rate except 9.2 or 4.4
Any rate except 18.8 or 4.4
Any rate except 18.8 or 9.2
1
Prt2 Prt3 Prt4
19.2 18.8 18.0
2.4 2.0 1.2
Prt5 Prt6
Port Speed Configuration Options for DSU with TDM
July 1999
16.8 14.4 12.0
Disab Prev
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3610-A2-GB91-90