____________________________________________________________________________________
____________________________________________________________________________________
10
NTU
Optical Network Terminals
2.4
Main Specifications
Table 2 lists main specifications of the terminals.
Table 2
–
Main specifications
VoIP Protocols
Supported protocols
SIP
Audio Codecs
Codecs
G.729, annex A
G.711(A/µ)
G.723.1 (5.3 Kbps)
Fax transmission: G.711, T.38
Parameters of Ethernet LAN Interface
Number of interfaces
4
Electric port
RJ-45
Data rate, Mbps
Autodetection, 10/100/1000 Mbps
duplex/half-duplex
Supported standards
IEEE 802.3i
10Base-T Ethernet
IEEE 802.3u 100Base-TX Fast Ethernet
IEEE 802.3ab 1000Base-T Gigabit Ethernet
IEEE 802.3x Flow Control
IEEE 802.3 NWay auto-negotiation
PON Interface Specifications
Number of PON interfaces
1
Supported standards
ITU-T G.984.x Gigabit-capable passive optical networks
(GPON)
ITU-T G.988 ONU management and control interface
(OMCI) specification
IEEE 802.1Q Tagged VLAN
IEEE 802.1p Priority Queues
IEEE 802.1D Spanning Tree Protocol
Connector type
SC/APC
Complies with ITU #T G.984.2
Transmission medium
Fibre optical cable SMF - 9/125, G.652
Splitting ratio
up to 1:128
Maximum range of coverage
20 km
Transmitter:
1310nm
Upstream connection speed
1244Mbps
Transmitter power
from +0.5 to +5 dBm
Optical spectrum width (RMS)
1 nm
Receiver
1490nm
Downstream connection speed
2488Mbps
Receiver sensitivity
from -8 to -28 dBm
Parameters of analogue user ports
Number of ports
1
Loop resistance
up to 2kΩ
Dialling
pulse/frequency (DTMF)
Caller ID display
yes
Wi-Fi Interface Specifications
Model
NTU-RG-1421G-Wac, NTU-RG-1421GC-Wac,
NTU-RG-1421G-WZ
NTU-RG-1431G-Wac
Standard
802.11a/b/g/n/ac
802.11a/b/g/n/ac