S46 - Protocol/Compression Selection

Description
If &Q5 is selected, the S46 register permits you to select whether or not to negotiate compression and to select the priority for negotiating protocols if any. When negotiating MNP, the class negotiated is determined by bit 1. MNP Class 5 is negotiated if bit 1 is set, and MNP Class 4 is negotiated if it is cleared. This register cannot force X.25 with compression.

Type
bit-mapped

Default value
2

Stored by &Wn
yes

Displayed by &V
yes
Bit Map

Bit     Description                                                    


0       Ignored                                                        


1       Enable compression                                             


2       X.25 is preferred over LAPM protocol (see note below)                                      


3       Prevent X.25 protocol (ignore bit 2) (see note below)          


4       Prevent LAPM protocol                                          


5       Ignored                                                        


6       Ignored                                                        


7       Ignored

Note: Bits 2 and 3 are ignored if X.25 is not supported.

Typical values:

0 disable compression

2 enable compression

Cross Reference
S48 Feature Negotiation Action

S36 Negotiation Fallback.

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