18
Tmedia System Installation Guide for TMG3200
2.5.5
Optical Interface (OC3/STM-1)
A TMG3200, with one main and one backup OC3 or STM-1 port enables connection to OC3/STM-1
lines. See figure 2.8 on page 18. Refer to table 2.2 on page 18 for a listing of optical interfaces. The
default OC3/STM-1 connection is SMF, intermediate reach, (SFP-OC3-IR1) 1310 nm with LC type
connectors.
Note
Please make certain that the correct model is selected at the time of ordering. If your
installation requires a different model from the one that has been provided, you must
replace it.
Automatic Protection Switching
The APS port is used for OC3/STM-1 redundancy. Switchover occurs automatically based on
configurable parameters. It is recommended that APS be used if the installation provides this feature.
To connect the TMG3200 (Optical Interface) to the PSTN:
1. Connect a fiber optic cable between the Main port and OC3/STM-1 line, as shown in figure 2.8 on
page 18.
2. Connect a fiber optic cable between the APS port and OC3/STM-1 line.
Figure 2.8
Optical Interface to the PSTN
Table 2.2
Optical Interfaces
ETH
VoIP
TMS
1
2
1
1
2
2
BIT1
BIT2
APS
MAIN
Transceiver Model
Description
Spec
Mode
Type
Range
(Km.)
Wavelength
(NM)
Connection
SFP-OC3-IR1
OC3/STM1
Hot Pluggable
Single-mode
Intermediate reach
15
1310
LC
SFP-STM1E
STM1E (Electrical)
Hot Pluggable
75 ohms Cooper
Max 180m
a
a. Variable range
NA
DIN (mini-coax)
