S57 - Network Options Register

Description
This bit-mapped register allows configuration of the address field for X.25 packet level operation.

Note: X.25 packet level corresponds roughly to the OSI model network layer.

Bit 0 - Address may be sent in the call accept or clear request packets. Otherwise, the address length is set to zero.

Bit 1 - Neither address, facility, nor data fields may be set in call accept or clear request packets. Address is not sent, even if used in combination with bit value 1.

Type
bit-mapped

Default Value
0

Stored by &Wn
yes

Displayed by &V
no

Value Map

Value       Description                                                             

0           In call accept or clear request packets, sets the address length to     

            zero, but facility and data fields may be present (factory setting)      


1           In call accept or clear request packets, address, facility, or data     

            fields may be sent.                                                      


2, 3        In call accept or clear request packets, no fields may be sent.

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