Closed User Groups and Facilities

You can access the Closed User Groups and Facilities window from the Link Editor.

The parameter values are stored in the link configuration files /etc/opt/SUNWconn/x25/config/link_config_nnnn.cfg, where nnnn is the four-digit number that indicates the link number (for example, the file link_config_0004.cfg contains the parameters for link number 4).

Closed User Groups (sub_cug, sub_pref_cug, sub_cugoa, sun_cugia, bar_cug_in)

Choose any of the settings, listed below, that correspond to the CUG options to which you subscribe.

• CUG, no other access

• Preferential CUG

• CUG, with outgoing access

• CUG, with incoming access

• Reject incoming CUG calls

CUG Format (cug_format)

Choose either Basic or Extended.

Facilities (accept_revchg, prev_chg, bar_incall, bar_outcall, sub_toa_npi_fmt, bar_toa_npi_fmt, sub_nui_override, bar_call_x32_reg)

Choose any of the settings, listed below, that correspond to PSDN facilities to which you subscribe.

• Incoming Reverse Charging

• Local Charging Prevention

• Bar Incoming calls

• Bar Outgoing calls

• Allow TOA/NPI Addressing

• Bar TOA/NPI Addressing

• Allow NUI Override

• Bar Outgoing during X.32 registration

Size Negotiation (use_negotiation)

Choose Request size negotiation or Disallow size negotiation or neither.

If you select Request size negotiation, outgoing calls automatically contain packet and window size negotiation. Incoming calls are negotiated if they contain packet and window size negotiation.

If you select Disallow size negotiation, incoming calls containing packet and window and size negotiation are rejected.

If you select neither option, outgoing calls will not contain any packet or size negotiation information. However, incoming calls with packet and size negotiation information will still be accepted.

Fast Select (fast_select)

The options for Fast Select are With no restriction on response and With restriction on response. You can select one or both options. With no restrictions allows incoming fast select calls with no restriction on response. With restrictions allows incoming fast select calls with restriction on response. When these options are selected together, all incoming fast select calls are allowed.