Operation Manual

Call-back Options and Cost Allocation
NetWAYS/ISDN – 3 Remote Access with NetWAYS/ISDN 29
The COSO feature in NetWAYS/ISDN works as follows:
When charge assignment is set to the default option “Caller”,
the connection costs are borne by whichever site dials up the
connection. Use this setting if the remote system does not
support charge assignment.
When charge assignment is set to “Local system”, all con-
nections are charged to the local site. In this case,
NetWAYS/ISDN does not answer incoming calls. Instead,
NetWAYS/ISDN calls back, dialing up the connection to the
call destination itself.
When charge assignment is set to “Remote system”, all con-
nections are charged to the destination site. When data
needs to be transmitted to the remote network,
NetWAYS/ISDN signals a connection request over the ISDN
D channel. The remote access server rejects the incoming
call and calls the client computer back.
For both of these options, “Local system” and “Remote sys-
tem”, the number of the site calling is transmitted over the
D channel. For this reason the ISDN provider must support
the CLIP feature (calling line identification) on the ISDN
lines.
In most countries, the call-back request over the D channel is
toll-free. Ask your ISDN provider if this is the case for your
line.
If the cost allocation settings in NetWAYS/ISDN and the re-
mote system do not match, a requested call-back may not be
carried out correctly.
In this case a message is displayed in the Event Log and no
further outgoing calls are then permitted to this call destina-
tion. Only the remote system can activate the connection.
For example, the main office may bear all the charges during
working hours, while the NetWAYS/ISDN computer is
charged for connections after hours.
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