C. Configuration Options

Table C-5. Data Port Channel Configuration Options (2 of 4)

Port Rate: 384

 

 

 

 

 

 

 

 

 

 

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64

128

192

256

320

384

448

512

576

640

704

768

832

896

960 1024

1088

1152

1216

1280

1344

1408

1472

1536

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56

112

168

224

280

336

392

448

504

560

616

672

728

784

840

896

952

1008

1064

1120

1176

1232

1288

1344

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Data Port Rate (appears when using the block or ACAMI channel allocation method, or when a synchronous data port is assigned to another synchronous data port). Designates the data rate for the port. Available selections depend on the current base rate configured for the port. The factory default for Nx64 is 384 kbps, and Nx56 is 336 kbps.

NOTES:

This configuration option does not appear if the individual channel allocation method (Chan) is selected using the Assign By configuration option.

Changing this configuration option from one rate to another deallocates all DS0 channels assigned to either the network interface or the DTE Drop/Insert (DSX-1) interface.

When you enable EDL (for 2-port and 4-port DSU/CSUs), 8 kbps of the total bandwidth allocated for this port is not available to the synchronous data port. For example, if you select 256 kbps and EDL is enabled, only 248 kbps are available.

When you enable EDL (for 2-port and 4-port DSU/CSUs) on a synchronous data port and the clock source is set to that synchronous data port, the external device must provide a clock of 8 kbps less than the expected data port rate. For example, if you select 64 kbps, the external clock source must supply a 56 kbps clock signal.

For the 3164 DSU/CSU there is a hardware limitation that limits the combined bandwidth used by Port 1 and Port 3 to a total of 2048 kbps and the combined bandwidth used by Port 2 and Port 4 to 2048 kbps. Thus, when entering this menu, the rate choices are limited due to this constraint. This limitation only occurs in configurations mapping a port to a port or when mapping ports to the DTE Drop/Insert (DSX-1) interface and to the network.

3160-A2-GB21-90

February 2001

C-13

Page 157
Image 157
Paradyne 3164-A2, 3165-A2, 3160-A3, 3161-B3 manual Table C-5. Data Port Channel Configuration Options 2