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/ Private networking using PRI SL-1
Modular ICS 7.1 Installer Guide
N0130943 02
ISDN Call Connection Limitation
The ICCL feature piggybacks on the call initiation request and
acts as a check at transit PBX points to prevent misconfigured
routes or calls with errors from blocking channels.
This feature adds a transit/tandem counter to a call setup
message. This counter is compared at each transit PBX with a
value programmed into the transit PBX, in a range from 0 to
31. If the call setup counter is higher than the PBX value, the
call will be blocked at the PBX and cleared back to the
network. This prevents calls from creating loops that tie up
lines.
Norstar configurations:
•
Setting ICCL
1. With the display showing
System prgming
press
‘
until the display shows
NetworkServices
.
2. Press
≠
until
MCDN
displays.
3. Press
≠
.
NetwkICCL:
displays.
4. Press
CHANGE
to choose either
Y
(yes) or
N
(no)
•
Under
Hardware
, define
Maximum transits
for the card.
The diagram below demonstrates how a call might loop
through a network if the system is
not
set up with the ICCL
feature.
Содержание Modular ICS 7.1
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Страница 46: ...46 How to use this document Modular ICS 7 1 Installer Guide N0130943 02...
Страница 72: ...72 Welcome to ISDN Modular ICS 7 1 Installer Guide N0130943 02...
Страница 102: ...102 Remote system access Modular ICS 7 1 Installer Guide N0130943 02...
Страница 108: ...108 Controlling system access Modular ICS 7 1 Installer Guide N0130943 02...
Страница 192: ...192 ETSI MCDN and Network features Modular ICS 7 1 Installer Guide N0130943 02...
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Страница 582: ...582 Link Status Modular ICS 7 1 Installer Guide N0130943 02...
Страница 586: ...586 Usage Metrics Modular ICS 7 1 Installer Guide N0130943 02...