Westermo MR Series - Manual (Page 230)

230 6622-3201
Web Interface and Command Line Reference Guide www.westermo.com
Sync port:
This parameter is only relevant if the Layer 1 Interface option above has been set to “Port” (as
opposed to “ISDN”). It is used to select ASY0 or ASY1 as the layer 1 interface for SNAIP data.
Protocol:
This parameter sets the appropriate protocol for the interface. Choose “LAPB”, “SNA” for
SDLC or “RAW” for raw mode in which all L2 frames are transmitted and received. You can
also choose “RAW_NOHDR” for raw mode with no DLSw headers.
Answering:
If this parameter is set to “On”, the unit will answer incoming calls on the relevant LAPB ses-
sion. To prevent the unit from answering incoming calls on this LAPB session set the option to
“Off”. If Layer 1 interface is set to “Port” this parameter is not used.
MSN:
This parameter provides the filter for the ISDN Multiple Subscriber Numbering facility. It is
blank by default but when set to an appropriate value with Answering “On” it will cause the unit
to answer incoming calls only to ISDN numbers where the trailing digits match the MSN value.
For example, setting the MSN parameter to 123 will prevent the unit from answering any calls
to numbers that do not end in 123.
If Answering is “Off”, or Layer 1 interface is set to “Port”, this parameter is not used.
Sub-address:
This parameter provides the filter for the ISDN sub-addressing facility. It is blank by default
but when set to an appropriate value, with Answering enabled, it will cause the unit to answer
incoming ISDN calls only where the trailing digits of the sub address called match the Sub-
address value. For example, setting the Sub-address to 123 will prevent the unit from answering
any calls where the sub-address called does not end in 123.
If Answering is “Off”, or Layer 1 interface is set to “Port”, this parameter is not used.
Auto contact:
When set to “On” a TEST frame is not transmitted and the TEST response is not expected.
Instead the unit assumes the station exists and proceed with the protocol as if the DLSw has
received the TEST response.
DCD Toggle:
When this parameter is set to “On”, the DCD (Data Carrier Detect) output will turn off briefly
each time the DLSw protocol enters the DISCONNECTED state. Thus any attached equipment
that needs to will see signals changing state.
L1OOS:
This parameter causes the Sync port to be deaf and dumb (and have DCD low) while the
connection with the WAN is down. This is so that some terminals don’t get too excited just
because L2 is up and think everything else should be working (and go into a management error
state).
SNA Parameters
Master:
Set this parameter to “On” if this unit is to be the Master in an unbalanced link, or “Off” for if
the unit is to be a secondary station.
Polling Stations:
This parameter lists the station addresses on the data link as a comma-separated list of hex
values (e.g. “c1,d1” for station addresses 0xc1 & 0xd1). This parameter is only applicable in SNA
mode