Kathrein 3 - Manual (Page 3)

Integrated Edge QAM function
The downstream channels can also be
operated as MPEG or DVB-C conform
MPEG-Video Edge QAMs, for example for
digital Cable TV, Video-on-Demand, interac-
tive TV and for network-based video
recording (DVR). The unit then receives
MPEG-2 over IP/Ethernet packets in mul-
tiple (MPTS) or in single programme trans-
port streams (SPTS). The MPTS is then
de-multiplexed, the native MPEG-2 packets
being passed on to the QAM interfaces.
The re-multiplexing function creates multi-
ple programme transport streams (MPTS)
for the designated cable channels. The
PSI/SI table processing, the PID fi ltering
and substitution and PCR de-jittering is
carried out in all model types.
Both CBR and VBR traffi c are supported
for narrowcast and broadcast applications.
The C..200 series unit is the only product
which can at one and the same time make
the most effi cient use of the RF bandwidth
and maintain video quality concurrently
using tools such as the statistical multiplex-
ing of all MPEG video and DOCSIS traffi c
and the dynamical scheduling of MPEG
and IP traffi c.
Extensive Applications
For confi guration and management the
C..200 series unit proffers a Command
Line Interface (CLI) and an SNMP. Opera-
tional functions such as “show cable
modem”, “show ARP”, spectral manage-
ment, CPU and memory resources report-
ing, user privilege management are all
included in the latest product release.
Further extensive IP functions, such as
DHCP relay and option 82, several DHCP
servers, proxy ARP, IP sub-net bonding,
IGMP snooping, IGMP v2 and v3, access
control lists (ACL) are also included.
Modular and fl exible architecture
All three CMTS platforms C2200, C3200
and C10200 are based on one single modu-
lar architecture enabling cable operators to
customise their networks with maximal fl ex-
ibility to their service requirements. All mod-
els utilise the same technology and the same
software. Model differences are purely in the
size, upgrading and redundancy possibilities
– which are explained in the individual model
feature lists.
Each platform offers a specifi c number of
slots which can be occupied by any combi-
nation of downstream or upstream modules.
Minimal operational occupancy would require
at least one downstream and one upstream
module.
Full DOCSIS 3.0 Features
The convincing technology base achieved in
all three platforms has led to all being fully
DOCSIS 3.0 qualifi ed by CableLabs
® .
Thereby the CMTS platforms all fulfi l more
than the standard requirements of DOCSIS
3.0 – in part extensively.
The highest channel bonding capability of up
to 16 channels (800 Mbps) in upstream and
up to 16 channels (480 Mbps) in the down-
stream secure full future-proof features.
In this fashion any further advances in cable
modem technology can be immediately uti-
lised without having to change units or with
new hardware. Further IPv6, AES coding and
decoding and dynamic load balancing are
supported.
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