Switch User Manual

Conﬁguring X.25 Physical Ports 6-7

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.