Installation
INTER-TEL
®
AXXESS
®
MANUAL VERSION 11.0 – May 2008
Page
3-32
T1/PRI Trunk Terminations from RJ48C Jacks
5. At the MDF backboard, plug one end of a four-pair, non-reversing (straight through),
mod-to-mod line cord into each modular jack assembly. The other end of each line cord
is later plugged into the T1 jack on the corresponding T1 or T1/E1/PRI card.
NOTE: Make sure the connectors on the ends of each line cord are properly attached.
If any of the wires are cracked or broken, T1/PRI transmission problems can occur.
Figure 3-13. T1/PRI Trunk Terminations from RJ48C Jacks
Figure 3-14. Modular Jack Assembly Wiring for T1/PRI Trunks
7.17 Method C – T1/PRI Trunks Terminated on an RJ-Type Block
FOUR-PAIR,
NON-REVERSING
MOD-TO-MOD
LINE CORD
FOUR-PAIR,
NON-REVERSING,
MOD-TO-MOD
LINE CORD
T1 CABLE
EIGHT-CONDUCTOR
MODULAR JACK ASSEMBLIES
RJ48C
JACK
TO
TELCO
TO
T1 CARD
MODULAR JACK ASSEMBLY FOUR-PAIR,
NON-REVERSING,
MOD-TO-MOD
LINE CORD
T1 CARD
RJ48C JACK
G
Y
BR
S
R
BK
O
BL
TIP
(OUT)
RING
(OUT)
TIP 1
(IN)
RING 1
(IN)
1
2
3
4
5
6
7
8
R1
T1
R
T
1
3
5
7
2
4
6
8
5
6
7
8
4
3
2
1
NOTE: OUT = transmit to network; IN = receive from network