User's Manual

29
Technical specifications
Items Unit B+ C+
Bit error ratio
-- <-10
-10
<-10
-10
Minimum sensitivity
dBm -27 -30
(1)
Minimum overload
dBm -8 -8
(2)
Upstream optical penalty
dB 0.5 0.5
Consecutive identical digit
immunity
bit >72 >72
Tolerance to reflected optical
power
dB <10 <10
Tabel 3: Optical interfaces specifications
3.1.2 Ethernet
Ethernet is the wired LAN technology and is revised in the IEEE 802.3 standard. At the OSI reference
system, Ethernet is at the Data Link layer. In the FiberGateway equipment the LAN type of physical
interfaces is 10/100/1000BASE-T AUTO-MIX Ethernet type over RJ45 connectors.
3.1.3 Interface FXS
Items State Description
DC voltage (V) 48V (21 to 56.5V) According to ANSI/TI A-1063
Ringer voltage (V)
DC offset: 12 Vdc
AC Voltage: 56 Vac rms
Frequency: 20 Hz
Max Vac + Vdc: 68 pk
Ringing signal
cadence
normal ringing 2 sec ring / 4 sec pause
REN
ringer equivalence
numbers
Maximum ringer load: 5
Loop Current
Characteristics (A)
25 mA (max) -
1
ONT RX= -8~-30 dBm (The equipment sensitivity assumes the use of the optional RS (255,239) FEC capability
of the G-PON TC layer with the current class B+ ONU detector technology; The ONU overload is set at –8 dBm to
be common with the class B+ value, even though in this application –10 dBm is sufficient).
Optical solution: B+ and C+.
Connector type: SC/APC.
IEC 60825-1: "Class 1 Laser Product''.
The B+ and C+ diplexer is embedded on the FiberGateway equipment version.
ONU Single Fiber - G.984.2 (03/2003) + G.984.2 Amd 1 (02/2006) and 2 (03/2008), G.983.3 (03/2001).
Optical Metering – G.984.2 Amd 2 Table IV.1/G.984.2 – Optical Line Supervision related measurement
specifications (the measurement accuracy is +/- 3dBm maximum).
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