Cisco TELEPRESENCE ISDN GATEWAYS 2.0 Online Help Manual page 67

Allow parallel
Parallel dialing allows all ISDN calls to
dialing be bonded to be dialed
simultaneously.
Port search
Whether free B-channels will be
order selected starting with the low-
numbered port and working towards
the high-numbered port, or the other
way around.
When making outgoing ISDN calls,
this setting is used to select which
port to place the call on; when
receiving incoming ISDN calls, it is
used to select which port number to
advertise to the ISDN endpoint.
Load Use this option to forward calls to
balancing another gateway if all of this ISDN
gateway's channels are full or
unavailable. Your ISDN network must
support this functionality.
Select Active on its own or in
combination with Use higher
numbered channels only.
Outgoing
Select from the drop down list.
ISDN calls
Cisco TelePresence ISDN Gateways v2.0 Online help (Printable format)
Configuring general ISDN settings
Enable parallel dialing if your ISDN
endpoints support it. Since parallel dialing
is not supported by all equipment,
disabling parallel dialing may improve
interoperability with legacy endpoints;
however, call setup times for outgoing
ISDN calls may increase slightly. This
option does not affect incoming ISDN
calls.
This order is applied to the ports selected
in the dial plan.
When Active is selected, the ISDN
gateway rejects incoming ISDN calls if not
enough channels are available, and sends
a 'Redirection to new destination' message
to the ISDN network. It is up to your ISDN
network provider to redirect the call to
another gateway.
To work out the number of free B-
channels, if Use higher numbered
channels only is selected, the gateway
considers only higher-numbered channels
than the channel used by the initial call. If
you are unsure whether you need to
enable this option, refer to your ISDN
network provider.
When Establish layer 2 is selected, only
layer 1 needs to be up before placing a
call. The ISDN gateway will attempt to
bring up layer 2.
If Require layer 2 is selected, then layer 2
must be up before calls are allowed. (This
was the default behavior in older software
versions.)
67 of 116