Cabletron Systems 1800 User Manual

Frame Relay Status and Configuration

5-18

Configuring Logical Ports

This speciÞes the maximum number of sequentially numbered frames that can be 
waiting for acknowledgment by the destination device. If this number is 
exceeded, no frames will be transmitted until an acknowledgment is received.

This speciÞes a default window size that will be assigned to an incoming call 
setup packet if the packet does not include a window size. Valid values are 1 to 7 
packets.

Use this Þeld to specify the value that will be inserted into a Call Request packet if 
Throughput Class Negotiation

 is not enabled or if a throughput class is not 

requested in the Call Request. This value should not be higher than the line speed 
speciÞed for the physical port.

Enter a number 3 - 13 that corresponds to the following values (in bits per 
second):

3 = 75

7

= 1200

11 = 19.2K

4 = 150

8

= 2400

12 = 48K

5 = 300

9

= 4800

13 = 64K

6 = 600

10 = 9600

This Þeld speciÞes whether the port belongs to a Closed User Group (CUG). The 
CUG function is a privacy feature that allows the creation of up to 100 groups of 
users per port. Members of a CUG can communicate with other members, but 
access to and from network users outside that CUG may be denied (determined 
by Rcv Calls Outside CUG and Make Calls Outside CUG).

This Þeld is only conÞgurable if the port is a CUG member; it speciÞes which 
Closed User Group the port belongs to. The CUG index number is included in call 
packets, and is cross-referenced with the CUG Index created through console 
management.

This Þeld is only conÞgurable if the port is a CUG member; it speciÞes whether 
the logical port can receive calls from network users outside that CUG.