Nortel Meridian 1 Administration And Maintenance page 37

Figure 9
ISDN BRI TIE trunk connectivity — second configuration
Non ISDN
BRI Line
Option 11
Card
SILC
Clock
Controller
Slave
Chapter 1 — ISDN Basic Rate Interface
In the second configuration (refer to Figure 9), an MCDN TIE trunk
connection may be achieved by connecting two Meridian 1s through an NT1
device. With this configuration, there is a distance limitation of 6.5 km
(21325 ft), without any signal amplification device (such as a repeater). Clock
synchronization may be achieved by having the Meridian 1 Option 11,
equipped with the SILC, derive clock reference from the BRI TIE trunk
connection or from other PRI/DTI/BRI connections if available. The
Meridian 1 equipped with the UILC interface may be allowed to operate in
free-run mode or derive the clock source from other PRI/DTI/BRI
connections if available
2500 or digital type
ISDN/BRI terminal
S/T
S/T
BRI/DT1/PRI
Option 11C
Non ISDN BRI
device such as
telephone
ISDN/BRI terminal
U
NT1
BRI/DT1/PRI
ISDN BRI Administration and Maintenance
Page 23 of 492
Non ISDN
BRI Line
Option 11
Card
S/T
UILC
Clock
Controller
FR
(Free
Run)
553-7557.EPS