Paradyne 3551 manual Port Speed DBM Configuration Options

COMSPHERE 3550 Series Data Service Units

Table 5-13

Port Speed (DBM) Configuration Options

Prt1( 9.6): 9.6
Next	14.4	56	12.0	9.6	4.8	2.4	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 DBM.)

14.4 to	Ð	Select to set the port's operating rate.
1.2 kbps
Disab	Ð	Select to disable the port.

Option Verification: For all ports, the DBM verifies that the sum of the individual port speeds does not exceed the primary aggregate speed set in Rate(Kbps) in the DBM option set. If the sum of the port speeds equals the primary aggregate rate, an underspeed port selection is required.

Prt2( 9.6): 9.6 for MPTT; Disab for all other configurations
Next	14.4	12.0	19.2	9.6	4.8	2.4	1.2	Disab	Prev

Port 2 Speed. Primary data rate in kbps on Port 2. (Must be set to the same value in the remote DBM.)

14.4 to	Ð	Select to set the port's operating rate.
1.2 kbps
Disab	Ð	Select to disable the port.

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 Rate(Kbps) in the DBM option set. If the sum of the port speeds equals the primary aggregate rate, an underspeed port selection is required.

Underspeed: Disab

Next Disab Prt1 Prt2 Prev

Underspeed Port. Selects which port is to run slightly underspeed to allow for in-band framing and in-band secondary channel transport, if used. If more than one port is active and the sum of the port speeds 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: When Port Cntrl is set to DSD or Share DevA is enabled (in the MUX (Setup) option set), port speeds are only

	counted once per DSD when calculating used bandwidth.
Disab	Ð	No port runs underspeed during primary operation.
Prt1 or	Ð	Selected port runs underspeed during primary operation.
Prt2

5-28 December 1996 3550-A2-GB20-20