X.25 Parameters for IP Mapping

Packet Size

The size of the X.25 packet that will carry IP datagrams. In accordance with RFC 877, when IP datagrams are longer than the X.25 packet size, Solstice X.25 uses the M-bit to transmit the datagrams as complete packet sequences. Fragmentation of IP datagrams occurs only if the size of an IP packet exceeds the maximum transmission unit (MTU) size for a given subnetwork.

Window Size

This parameter applies to calls in both directions and should not be larger than the window size value you specified for X.25.

Reverse Charge

Determines whether the software will request reverse charging when proposing calls to the remote host.

RPOA Numbers

A four-digit number that provides networks between you and the remote host with additional routing information. You can have up to four RPOA numbers. If you have multiple RPOA numbers, enter them together in the same sequence of digits, with no spaces between.

Closed User Group

CUG Type

Possible values are none, multi-user and bilateral CUG.

CUG Number

If your host is a member of a multi-user or bilateral CUG, enter the CUG number.