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QMultiFlex-400™ Installation and Operating Handbook
(QoS) support, IEEE 802.1q VLAN support, traffic shaping and Adaptive Coding
and Modulation (ACM). A dual IPv4/IPv6 TCP/IP stack is provided. IPv4 support is
provided for all IP functions as the default. With respect to IPv6, bridging and routing
are supported along with an IPv6 embedded web server. Modem IP addresses and
static routes can also be entered and displayed in IPv6 format. TCP acceleration
is supported at up to 100 Mbps and up to 4,400 concurrent accelerated TCP
connections are supported along with up to 40,000 unaccelerated TCP connections.
•
Trunk and access VLAN modes are supported, along with filtering on specific
VLANs at the remote modems.
5.2 Standard-Fit Hardware
5.2.1
IF/L-band Operation
The following are provided as standard:
•
IF operation, via transmit and receive N-Type connectors (supporting
at
50 to 90MHz and 100 to 180MHz).
•
L-band operation, via transmit and receive N-type connectors (supporting
operation at
•
A high-stability L-band 10MHz reference signal is available for output to a Block Up
Converter (BUC) or Low-Noise Block (LNB) in order to phase-lock the BUC or LNB's
local oscillator to a highly stable frequency reference.
•
A Frequency Shift Keying (FSK) capability for performing FSK communications to
and from a compatible BUC or IF transceiver. This allows remote monitoring and
control of the BUC or transceiver via a modulated FSK signal on the Inter-Facility
Link (IFL) cable.
Note that a single Rx N-type connector is provided. The inbound
carriers must all be contained within a 72MHz frequency span in
order for the different carriers to be processed correctly by the
multiple demodulators.
5.2.2
Ethernet Operation
To increase processing power in order to support the highest throughput possible, an IP
processing card is installed as standard. This needs to be connected to the main modem
IP traffic port via an ethernet patch cable. With the modem configured for 'trunking' mode
(our high-speed bridge mode) 345Mbps bi-directional traffic throughput is possible – up to
200,000 packets per second with zero jitter.
Ethernet speed, duplex and cable termination (crossover versus straight-through) are auto-
negotiated. Speed and duplex can be set to fixed values if desired.
950 to 2450MHz).
5-2
50Ω operation
50Ω
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