Q-Flex Satellite Modem Installation and Operating Handbook
5-3
A 4-port Gigabit Ethernet switch option is available. This e
xtends the base modem
Ethernet traffic port with another 3 Ethernet ports, creating a 4-port switch.
Ethernet speed, duplex and cable termination (crossover versus straight-through) are
auto-negotiated. Speed and duplex can be set to fixed values if desired.
5.3 Hardware Options
5.3.1 Terrestrial Interface Option Cards
One interface position is available for fitting a terrestrial interface card. Any of the
following option cards may be fitted in these interface positions (note that fitting duplicate
cards of the same type is not supported).
5.3.1.1 4-port Gigabit Ethernet Switch
The 4-port Gigabit Ethernet switch card
(part number P3718)
e
xtends the base modem
Ethernet traffic port with three further RJ45 Ethernet ports, creating a 4-port switch.
5.3.1.2 G.703 Option Card
The G.703 option card (part number P3722) provides support for G.703 E1/T1, E2/T2 and
E3/T3 traffic rates. Unbalanced G.703 is provided on two BNC 75
Ω
sockets and balanced
G.703 is provided on two RJ45 sockets. The following software features are included as
standard with the G.703 option card:
•
G.703 clock extension, providing a high-stability reference clock over satellite
(alternative to GPS). In this mode the G.703 card is used purely as a high-stability
clock generator for some other traffic source, such as serial data.
•
Timeslot Drop & Insert feature, allowing fractional E1/T1 services.
5.3.1.3 EIA-530 Option Card
The EIA-530 option card (part number P3720) provides selectable RS422, X.21, V.35 and
RS232 operation up to 10Mbps via a 25-way D-type female connector.
5.3.1.4 STM-1/OC-3/Optical Ethernet Option Card
The STM-1/OC-3/Optical Ethernet option card (part number P3723) provides selectable
STM-1, OC-3 and optical Ethernet operation up to 160Mbps. An open-standard SFP cage
is fitted that can be used with a wide range of SFP modules. All optical connector types
(such as LC and SC) and all types of optical cable (single-mode, multi-mode, all
wavelengths) are supported, subject to a compatible SFP module being fitted. Due to the
wide range of optical cabling and connector options, no SFP module is provided with the
card.