Nortel Meridian 1 Administration And Maintenance page 38

Page 24 of 492
Chapter 1 — ISDN Basic Rate Interface
Figure 10
ISDN BRI TIE trunk connectivity — third configuration
Non ISDN
BRI Line
Option 11
Card
SILC
Clock
Controller
Slave
553-3011-311 Standard 7.0
The third configuration (refer to Figure 10) establishes a MCDN TIE trunk
link by connecting two Meridian 1s through a direct line between two
back-to-back SILC interfaces. This configuration can be used in campus
environments, although it is not recommended because of the lack of
protection devices and because of the distance limitation of 1 km. Clock
synchronization may be achieved by having one of the Meridian 1s derive
clock reference from the BRI TIE trunk connection or from any other
PRI/DTI/BRI connections if available. The other Meridian 1 may be allowed
to operate in free-run mode or derive the clock source from any PRI/DTI/BRI
connections if available.
device such as
2500 or digital type
ISDN/BRI terminal
S/T
BRI/DT1/PRI
Note: This configuration is only recommended
in campus environments.
May 1999
Non ISDN BRI
telephone
ISDN/BRI terminal
S/T
BRI/DT1/PRI
Non ISDN
BRI Line
Option 11
Card
S/T
SILC
Clock
Controller
FR
(Free
Run)
553-7558.EPS