Compatible Systems 5.4 - Manual (Page 180)

174 Chapter 10 - WAN Link Protocols
MRU
This is the Maximum Receive Unit size in bytes for PPP packets. The default
value is 1500 bytes.
ACCM
The Asynchronous Character Control Map allows you to set characters which
must be “escaped” for your particular communications link. For the vast
majority of communications links, the default (no characters escaped) is
correct.
v Note: If you set Flow Control to XOn/XOff in the Interface Configuration
dialog box (under WAN/Physical Configuration) for this WAN interface, the
characters for XOn and XOff will automatically be escaped by the router.
Address/Control Compression
This checkbox controls whether this router will use the method defined in the
PPP specification for compression of the PPP address and control fields. The
default is checked.
Protocol Compression
This checkbox controls whether this router will use the method defined in the
PPP specification for compression of the PPP protocol fields. The default is
checked.
Multilink PPP Dialog Box
Multilink PPP Dialog Box
This dialog box is used to configure Multilink PPP (MPPP) parameters for
multiple WAN interfaces. MPPP allows multiple physical links to be
combined into a “bundle” which provides a virtual link with greater band-
width than a single link