X.25 Status and Configuration

Flow Control Negotiation

This Þeld allows for negotiation of ßow control parameters (packet and window sizes for data transmission in either direction) on a per-call basis. If No is selected, the Default Packet Size and Setup Packet Window Size will be used. If Yes is selected, a packet and/or window size included in a call packet will be used. (If a packet and/or window size is not included, the default values will be used.)

Throughput Class Negotiation

This Þeld allows for negotiation of throughput classes for data transmission in either direction on a per-call basis. If No is selected, the Default Throughput Class will be used. If Yes is selected, any throughput class included in a call packet will be used. (If a throughput class is not included, the default value will be used.)

Prevent Local Charge

This Þeld is used to prevent calls from being charged to this port. If Yes is selected, incoming calls from the network with Reverse Charging speciÞed will be rejected and outgoing calls will have Reverse Charging inserted if it is not already in the call packet. If No is selected, then calls can be charged to this port.

Accept Reverse Charge

This Þeld is used to authorize the transmission of incoming calls that request Reverse Charging. If Yes is selected, a call requesting Reverse Charging will be accepted. If No is selected, and a call requests Reverse Charging, the call will not be transmitted.

Fast Select

This Þeld authorizes transmission of incoming calls that request the X.25 Fast Select facility. This Þeld must be set to Yes if SDLC-LLC2 conversion is conÞgured over the port, or if the X.25 link is to an X.25 network.

In Call Bar

This is an X.25 facility that prevents the transmission of incoming calls to this port.

Out Call Bar

This is an X.25 facility that prevents the transmission of outgoing calls from this port.

Configuring X.25 Physical Ports

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Cabletron Systems 1800, FRX4000, FRX6000 manual Flow Control Negotiation

1800, FRX4000, FRX6000 specifications

Cabletron Systems, a leading player in network management and telecommunications solutions during the late 20th century, introduced several innovative products that played a crucial role in shaping enterprise networking. Among these were the Cabletron FRX6000, FRX4000, and the FRX1800, which delivered advanced features aimed at enhancing network performance, security, and scalability.

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