Teledex Y Series User Manual
Page 13
Y SERIES EXP212, EXP224, AND EXP248 USER GUIDE
www.teledex.com
13
For port 25–48 (EXP248):
PIN
Number
Port
Number
PIN
Number
Port
Number
1
Tip 25
26
Ring 25
2
Tip 26
27
Ring 26
3
Tip 27
28
Ring 27
4
Tip 28
29
Ring 28
5
Tip 29
30
Ring 29
6
Tip 30
31
Ring 30
7
Tip 31
32
Ring 31
8
Tip 32
33
Ring 32
–
–
–
–
18
Tip 42
43
Ring 42
19
Tip 43
44
Ring 43
20
Tip 44
45
Ring 44
21
Tip 45
46
Ring 45
22
Tip 46
47
Ring 46
23
Tip 47
48
Ring 47
24
Tip 48
49
Ring 48
25
X
50
X
Figure 1.7 Pin Assignment of LINE and POTS
Interfaces
1.2.6 CONNECTING THE GBE TRUNK
INTERFACE
For the EXP212, EXP224, the system provides
one trunk interface: it is an electrical (RJ-45)
interfaces.
For the EXP248, the system provides two types
of trunk interfaces (two ports for each type):
electrical (RJ-45) and optical (mini-GBIC)
interfaces. When both electrical and optical ports
are connected, system will automatically select
the interface according to the priority setting
(fiber first or copper first).
RJ-45 ELECTRICAL TRUNK PORT
The pin assignment of RJ-45 connector on the
trunk port is shown in the following figure and
table.
1,2
T/Rx+,T/Rx-
3,6
T/Rx+,T/Rx-
4,5
T/Rx+,T/Rx-
7,8
T/Rx+,T/Rx-
MINI-GBIC (SFP) TRUNK PORT (EXP248 ONLY)
Prepare a proper SFP module and install it into
the optical trunk port. Then you can connect
fiber optics cabling that uses LC connectors or
SC connectors (with the use of an optional SC-to-
LC adapter) to the fiber optics connector on the
trunk port.
A. Fiber Optics Cable with LC Duplex Connector
B. Connect the Optical Fiber to the SFP Socket
Figure 1.8 Connecting Optical Fiber to the
Trunk Port (EXP248 Only)
Note—Please observe the proper connecting
terminals for transmitting cable to TX LC-type
receptacle, and receiving cable to RX LC-type
receptacle on the front panel.