Emulex DCP_link - Manual (Page 103)

7-10 Chapter 7
Reverse Charging Calls - Offers the equivalent of a collect call. It is
allowed on a per-call basis and is specified in the Call Request packet by
the calling DTE.
Closed User Group (CUG ) - Allows the configuration of one or more
virtual private networks within a larger public network. A user may
gather a number of DTEs into a single logical group and restrict the
group’s access ability to receive incoming calls or to make outgoing calls
to the restricted “open” portion of the network. The number of CUGs is
network-dependent. A single DTE can belong to one or more CUGs.
Within the CUG category, you can specify whether a user connection has
incoming access (CUG with Incoming Access), outgoing access (CUG
with Outgoing Access), or both. If a DTE belongs to more than one
CUG, you must also specify a preferred (or primary) CUG.
Bilateral Closed User Group (BCUG) - Offers a finer degree of access
control than CUGs. Bilateral signifies a CUG relationship that has been
limited to a pair of DTEs. Access between the pair of DTEs is
unrestricted; however, access to or from any other DTE is not possible.
Maximum Packet Size - Specifies the largest packet size that can be
negotiated on a per virtual circuit basis.
Window Size - Specifies the largest value, per virtual circuit, to be
negotiated in a Window Size facility parameter field. The maximum
value for this parameter is dependent upon which Packet Sequencing
Modulo method you selected.
D-Bit Procedure Authorization - Not configurable
A DTE subscription with a PDN can include a provision to allow or disallow
a remotely originated, reverse-charged call from reaching that DTE (Reverse
Charging Acceptance). Charged calls, that is, locally generated call requests,
must specify reverse charging.
Emulex X.25 additionally provides local configurable options for both of the
preceding items. Regardless of a customer's PDN subscription, all inbound
reverse-charged calls can be rejected and all outbound call attempts that do
not specify reverse charging can be disallowed.
Configuring the X.25 Network Interface
To configure network interface parameters for Emulex X.25, load the
INETCFG Internetworking Configuration menu: