Modulator power offset adjust. Offsets the
modulator output power readout in the
Configuration menu. This feature does not
actually change the modulator power level,
but displays an offset value in the monitor.
The modulator power offset range is -99.9 to
+99.9 dB, in 0.1 dB steps.
Note: Anything except 0.0 dB will cause ADJ
to be displayed for the TX power level
Select Encoder type
VITERBI
SEQUENTIAL
TURBO (Only in Custom mode)
Select Scrambling type
INTELSAT
V.35
Select BPSK Bit Ordering
STANDARD
NON-STANDARD
Select TX spectrum phase
NORMAL
INVERT
Select Reed-Solomon Interleaver Depth
4
8
16
Selection of IESS-310 compliance for 8-PSK
2/3 with Reed-Solomon
Programs an emulation mode of a previous
Bse modem M&C functional revision. This
allows the user to select the CURRENT
VERSION or FUNCTIONAL X.
CURRENT_VERSION
FUNCTION VERSION X
(X = Rev. Emulation desired)
Notes:
1. Programming a current version
(default) allows all features and options (if
installed) to operate normally.
2. Programming a FUNCTIONAL version (X)
eliminates any changes that affect the
later version. The revision emulation
feature affects only functional changes.
3. A correction change (e.g., VER 3.1.2)
remains fixed in accordance with the
latest version. Since the revision
emulation default is the current version,
program the functional version at the start
of each operation.
4. The revision emulation feature does not
affect some interface changes for the
direct operation of the modem
(Configuration save/recall, test mode
screen in the Utility/System, all factory
setup modes, etc.).
HIGH POWER (0 or +)
HIGH STABILITY (0 or +)
VITERBI (- or +)
SINGLE RATE (- or +)
LOW RATE (- or +)
FULL RATE (- or +)
CARD #1 PCB (x or +)
CARD #3 PCB (x or +)
CARD #3 PCB (x or +)
8-PSK 2/3 (- or +)
TX ONLY (0 or +)
RX ONLY (0 or +)
0QPSK (- or +)
TX/RF L-BAND (0 or +)
IP 01
REED-SOLOMON 02
REED-SOLOMON 03
TURBO
NOT INSTALLED
REED-SOLOMON 02
REED-SOLOMON 03
TURBO
NOT INSTALLED
(Status Only)
TCP ACCELERATION (+ or -)
DATA ENCRYPTION (+ or -)
DATA COMPRESSION (+ or -)
QoS (+ or -)
NAT (+ or -)
BRIDGING (+ or -)
IGMP (+ or -)
HEADER COMPRESSION (+ or -)
REED-SOLOMON 02 LIST
INTELSAT (- or +)
AUPC (- or +)
REED-SOLOMON 03 LIST
INTELSAT (- or +)
AUPC (- or +)
This manual provides installation and operation information for the Comtech EF Data
CDM-IP 300L IP-Centric Satellite Modem. This is a technical document intended for
earth station engineers, technicians, and users responsible for the operation and
maintenance of the CDM-IP 300L IP-Centric Satellite Modem.
RELATED DOCUMENTS
Comtech EF Data CDM-IP 300L Satellite Modem Installation and Operation Manual
CONVENTIONS AND REFERENCES
CAUTIONS AND WARNINGS
Indicates information critical for proper equipment function.
IMPORTANT
Indicates a hazardous situation that, if not avoided, may result in minor or
moderate injury. CAUTION may also be used to indicate other unsafe practices
CAUTION
or risks of property damage.
Indicates a potentially hazardous situation that, if not avoided, could result
WARNING
in death or serious injury.
METRIC CONVERSION
Metric conversion information is located on the inside back cover of this manual. This
information is provided to assist the user in cross-referencing English to Metric
conversions.
RECOMMENDED STANDARD DESIGNATIONS
Recommended Standard (RS) Designations have been superseded by the new designation
of the Electronic Industries Association (EIA). References to the old designations are
shown only when depicting actual text displayed on the screen of the unit (RS-232, RS485, etc.). All other references in the manual will be shown with the EIA designations
(EIA-232, EIA-485, etc.) only.
TRADEMARKS
All product names mentioned in this manual may be trademarks or registered trademarks
of their respective companies and are hereby acknowledged.
REPORTING COMMENTS OR SUGGESTIONS CONCERNING THIS MANUAL
Comments and suggestions regarding the content and design of this manual will be
appreciated. To submit comments, please contact the Comtech EF Data Customer
Support Department.
EMC COMPLIANCE
This is a Class A product. In a domestic environment, it may cause radio interference that
requires the user to take adequate protection measures.
EN55022 COMPLIANCE
This equipment meets the radio disturbance characteristic specifications for information
technology equipment as defined in EN55022.
EN50082-1 COMPLIANCE
This equipment meets the electromagnetic compatibility/generic immunity standard as
defined in EN50082-1.
FEDERAL COMMUNICATIONS COMMISSION (FCC)
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment.
This equipment generates, uses, and can radiate radio frequency energy. If not installed
and used in accordance with the instruction manual, it may cause harmful interference to
radio communications. Operation of this equipment in a residential area is likely to cause
harmful interference, in which case, users are required to correct the interference at their
own expense.
Note: To ensure compliance, properly shielded cables for DATA I/O shall be used. More
specifically, these cables shall be shielded from end to end, ensuring a continuous shield.
SAFETY COMPLIANCE
EN 60950
Applicable testing is routinely performed as a condition of manufacturing on all units to
ensure compliance with safety requirements of EN60950.
This equipment meets the Safety of Information Technology Equipment specification as
defined in EN60950.
The following information is applicable for the European Low Voltage Directive
(EN60950):
<HAR> Type of power cord required for use in the European Community.
!
International Symbols:
Symbol Definition Symbol Definition
Alternating Current.
Note: For additional symbols, see “Cautions” listed earlier in this preface.
WARRANTY POLICY
This Comtech EF Data product is warranted against defects in material and workmanship
for a period of two years from the date of shipment. During the warranty period, Comtech
EF Data will, at its option, repair or replace products that prove to be defective.
CAUTION: Double-pole/Neutral Fusing.
ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung.
Protective Earth.
Fuse.
Chassis Ground.
For equipment under warranty, the customer is responsible for freight to Comtech EF
Data and all related custom, taxes, tariffs, insurance, etc. Comtech EF Data is responsible
for the freight charges only for return of the equipment from the factory to the customer.
Comtech EF Data will return the equipment by the same method (i.e., Air, Express,
Surface) as the equipment was sent to Comtech EF Data.
LIMITATIONS OF WARRANTY
The foregoing warranty shall not apply to defects resulting from improper installation or
maintenance, abuse, unauthorized modification, or operation outside of environmental
specifications for the product, or for damages that occur due to improper repackaging of
equipment for return to Comtech EF Data.
No other warranty is expressed or implied. Comtech EF Data specifically disclaims the
implied warranties of merchantability and fitness for particular purpose.
The remedies provided herein are the buyer's sole and exclusive remedies. Comtech EF
Data shall not be liable for any direct, indirect, special, incidental, or consequential
damages, whether based on contract, tort, or any other legal theory.
DISCLAIMER
Comtech EF Data has reviewed this manual thoroughly in order to provide an easy-touse guide to your equipment. All statements, technical information, and
recommendations in this manual and in any guides or related documents are believed
reliable, but the accuracy and completeness thereof are not guaranteed or warranted, and
they are not intended to be, nor should they be understood to be, representations or
warranties concerning the products described. Further, Comtech EF Data reserves the
right to make changes in the specifications of the products described in this manual at any
time without notice and without obligation to notify any person of such changes.
If you have any questions regarding the equipment or the information in this manual,
please contact the Comtech EF Data Customer Support Department.
The CDM-IP 300L, hereafter referred to as the CDM-IP, is a high-performance, low-cost,
IP-Centric satellite modem designed for closed network Single Channel Per Carrier
(SCPC) links. It is ideal for many VSAT applications. Offering a range of data rates from
2.4 kbps to 5.0 Mbps in 1 bit per second steps, the modem includes Viterbi forward error
correction as standard. The Turbo Product Codec is available as an option.
The modem is compact, 1U high and 12 inches deep, and consumes only 25 Watts
typically. It has the following configuration and control capabilities:
Front panel VFD display and keypad for local configuration and control.
Rear panel Remote Control Serial interface (DB9) for modem configuration and
control.
Rear panel Console Port (RJ-11) for Ethernet interface configuration and control.
Rear panel Ethernet Data interface (RJ-45).
For initial operation and setup, refer to 12, Quick-Start Guide.
Static IP routing for unicast and multicast
easyConnect Mode
Powerful network management
Web Server interface for complete product management
SNMP with public and private MIB
Telnet interface for remote product M & C
Console Port interface for local network management
Configurable serial interface (EIA-232 or RS-485) for local management
Remote software/firmware upgrade via FTP
Configuration backup and restore via FTP
Local software/firmware via console port
Data rates from 2.4 kbps to 5.0 Mbps
Symmetric as well as asymmetric operation for maximum bandwidth efficiency
Automatic Uplink Power Control (AUPC)
IGMP support for multicast
1.3.1 AUPC
An important innovation in the CDM-IP is the addition of Automatic Uplink Power
Control (AUPC). This feature enables the modem to automatically adjust its output
power to maintain the E
protection against rain fade, a particularly severe problem with Ku-band links.
To accomplish this, the framed mode of operation must be used, and the distant end
modem constantly sends back information about the demodulator Eb/No using reserved
bytes in the overhead structure. Using the E
power, and hence, a closed-loop feedback system is created over the satellite link.
of the remote end of the satellite link constant. This provides
A benefit of this feature is that whenever framed operation is selected, the remote
demodulator’s Eb/No can be viewed from the front panel display of the local modem.
1.3.2 SOFTWARE
The internal software is both powerful and flexible, permitting storage and retrieval of up
to 10 different modem configurations. The modem uses ‘flash memory’ technology
internally, and new firmware can be uploaded to the unit from an external PC. This
simplifies software upgrading, and updates can now be sent via the Internet, E-mail, or on
disk. The upgrade can be performed without opening the unit, by simply connecting the
modem to the serial port of a computer.
1.3.3 VERIFICATION
The unit includes many test modes and loopbacks for rapid verification of the correct
functioning of the unit. Of particular note is the IF loopback, which permits the user to
perform a quick diagnostic test without having to disturb external cabling. During the
loopback, all of the receive configuration parameters are temporarily changed to match
those of the transmit side. When normal operation is again selected, all of the previous
values are restored.
1.3.4 IGMP SUPPORT FOR MULTICAST
IGMP is a standard feature in the CDM-IP. If enabled, it responds to IGMP queries for
the configured multicast routes on the transmit side and generates IGMP queries on the
receive side. If there are no active IGMP receivers on the LAN, it will stop forwarding
the multicast traffic (received from the satellite) to the LAN.
1.3.5 easyConnect MODE
easyConnect is the new CDM-IP modem intelligent networking solution that allows a
link to be setup with minimal configuration (no specific routes need to be configured).
The CDM-IP also supports non-IP traffic with easyConnect. All IP traffic will be
subject to user configured QoS restrictions.
1.3.5.1 easyConnect OPERATION
The following is a detailed description of how an easyConnect pair should be setup and
configured as well as information about how easyConnect functions.
Because easyConnect is a “smart wire,” the devices that are attached to it on either
side of the satellite should be on the same subnet and should not configure a next hop
address to be the CDM-IP (as should be done with router mode). For purposes of
configuration, easyConnect mode should be viewed to function in much the same
way as a bridge (however, without spanning tree protocol).
All of the features that groom and optimize the satellite link in router mode are also
available in easyConnect mode.
easyConnect Multicast Option – Multicast packets in easyConnect mode are
identified using multicast MAC address. These identified multicast packets are either
routed or dropped based on the easyConnect multicast option.
easyConnect uses MAC (layer 2) addresses to learn where to send packets. In
comparison, router mode uses the destination IP address in the packet in conjunction
with the route table to determine where to forward the packets.
The CDM-IP Ethernet interface in easyConnect mode is configured to be in
promiscuous mode with a data rate of 10BaseT Half Duplex. The CDM-IP needs to
be in promiscuous mode in order to learn the attached networking devices.
Since easyConnect does not use a routing table, the determination of where to send
a packet is made by a learning process. When the system is powered-up, all packets
from each subnet (local and remote) will be sent over the satellite interface. However,
as each CDM-IP learns which devices are attached to their local Ethernet interfaces,
the CDM-IP begins to filter packets which it has learned are locally attached to its
Ethernet interface.
The easyConnect learning/forwarding algorithm is as follows:
If the packet is destined for the CDM-IP, process it locally.
If the packet is from the Ethernet interface, send it to the Satellite interface, unless
the destination layer 2 (MAC address) of the packets matches the source layer 2
address for a packet we have already seen, the destination MAC address of this
packet is on our local subnet; so why send it over the satellite interface. In this
case, the CDM-IP will drop the packet.
If the packet is from the satellite interface, send it out the Ethernet interface.
easyConnect mode will automatically use Header Compression (even if Header
Compression option has not been purchased). Because of this, some of the initial
IMPORTANT
traffic sent between two devices will not be received over the satellite until a full
Header is transmitted. For example, the default Header Compression Refresh
Rate is 50 packets. If a ping is sent over the satellite it will time out until the full
Header packet is sent. The Header Compression Refresh Rate on the
Administration Menu can be reduced to minimize the amount of traffic lost when
traffic is first sent between two devices. Once communication between two
devices has been established, both CDM-IP modems will be able to receive all
traffic, unless one CDM-IP is power cycled or reset.
Do not enable IF Loopback (or link the TX to RX by a BNC cable or satellite) on a
CDM-IP operating in easyConnect when connected to a LAN. In this configuration,
IMPORTANT
easyConnect will resend all layer 2 broadcast packets and cause a “broadcast
storm” on the LAN. To perform a loop test to verify the modem or satellite link, do one
of the following:
1. Reconfigure the CDM-IP to CDM-300L Emulation Mode by selecting
Configuration/Interface and then selecting EIA-422/530, V.35, or EIA-232.
2. Set the CDM-IP to Router Mode.
1.3.6 CDM-IP WORKING MODES AND HDLC ADDRESSING MODES
There are two Working Modes of the CDM-IP available: easyConnect and Router
Mode. There are also three HDLC Addressing Modes: Point-to-Point, Small Network,
and Large Network. This section will describe the functionality of these modes in order
to optimize the CDM-IP modems in your network.
The Working Mode and HDLC Address Mode of the CDM-IP modems must be
identical to pass traffic between modems.
IMPORTANT
easyConnect - This is the default Working Mode of the CDM-IP. easyConnect only
operates in Point-to-Point Mode, meaning that it is only communicating with one other
CDM-IP modem. This mode allows the CDM-IP to be setup with minimal configuration
(no specific routes need to be configured). In this mode, the CDM-IP is acting as a “smart
wire” over a satellite link between two CDM-IP modems. This allows the CDM-IP to
simultaneously forward IP traffic and non-IP traffic, such as IPX.
Changing the Working Mode or HDLC address Mode of the CDM-IP modem requires
the CDM-IP module to be rebooted. Before the user can select a different mode, the
CDM-IP will notify the user that changing the mode will require a reboot.
This diagram shows a 256 kbps Point-to-Point duplex link in easyConnect Mode. Note
that both sides of the link are on the same IP subnet - 10.10.0.0/16. There are no routes or
HDLC addresses to configure. When the system is powered-up, all packets from each
subnet (local and remote) will be sent over the satellite interface. Each CDM-IP learns
which devices are attached to their local Ethernet interfaces and will only send packets
over the satellite that are not destined for the locally attached devices.
Router Mode – This mode allows up to 256 static routes to be configured and can
operate in Point-to-Point, Small Network and Large Network Mode. Small and Large
Network Modes allow for multiple CDM-IP modem communication links. A Small
Network is defined as up to 254 separate HDLC addresses and Large is from 255 to
32766 separate HDLC addresses. The reason for the separate HDLC Modes is to allow
the user to minimize the HDLC overhead transmitted over the satellite based upon the
size of their network. In Point-to-Point, no HDLC address is transmitted; Small Network
transmits 1 byte and Large Network transmits 2 bytes as part of HDLC header for each
packet. Non-IP traffic is not supported in Router Mode.
This diagram shows a 256 kbps Point-to-Point duplex link in Router Mode. Note that
each side of the link has different IP subnets – 10.10.0.0/16 and 10.20.0.0/16. Each
CDM-IP has a static route defined for the distant CDM-IP subnet. The Next Hop is
automatically defined as Point-to-Point and there are no HDLC addresses to configure.
All that would be required to send traffic between the PCs on each subnet would be to
define the local CDM-IP as the PC default gateway. The CDM-IP modems will only pass
traffic over the satellite link by the ToSat routes configured in the Route Table.
“Star Network” Point-to-MultiPoint Configuration - Here, Hub CDM-IP 1 is
transmitting a common 2.048 Mbps link to 2 remote CDM-IPs. In turn, Remote CDM-IP
3 is transmitting a 256 kbps link back to Hub CDM-IP 1. Remote CDM-IP 4 is also
transmitting a 256 kbps link back to the Hub, but it is a separate link to Hub CDM-IP 2.
Since this is a Point-to-MultiPoint configuration, HDLC addressing is used so that the
traffic not intended for a particular destination can be filtered. For unicast traffic, it is best
to associate a unique HDLC address for each site in the network. For this case, the Hub
Site is HDLC 0x01, Remote A is HDLC 0x02 and Remote B is 0x03. Each CDM-IP
modem would select the HDLC address associated with its site as a RX HDLC Address,
so both CDM-IP modems at the Hub would have 0x01 as the first RX HDLC Address,
CDM-IP 3 would have 0x02 and CDM-IP 4 would have 0x03.
Hub CDM-IP 1 has static routes defined for both remote CDM-IP subnets with the Next
Hop HDLC address being the HDLC address associated with the remote site. Both
remote CDM-IPs have static routes to the hub with the next Hop being HDLC 0x01. The
Hub RX only CDM-IP 2 has a default route (ToEth) to Hub CDM-IP 1 because all
outbound traffic will go through CDM-IP 1.
Additionally, HDLC addresses can be used to select or filter multicast traffic on the hub
outbound common carrier. Hub CDM-IP 1 has two multicast routes defined with two
Next Hop HDLC addresses, 0x10 and 0x11. Remote CDM-IP 2 has RX HDLC Address
0x10 enabled to receive one of the multicast streams. Remote CDM-IP 3 has RX HDLC
Addresses 0x10 and 0x11 enabled to receive both of the multicast streams.
Additonal remote sites can be added through a dedicated RX Only CDM-IP at the hub for
each remote.
Satellite
2
5
6
k
b
p
s
t
PC
IP 10.10.1.100/16
GW 10.10.1.1
10.10.0.0 /16
10/100 BaseT LAN
b
M
8
4
0
.
2
Satellite dish
RX
TX
Hub CDM-IP 1
(efi0) 10.10.1.1/16
Static Routes
IP DestNext H opT ype
10.20.0.0/16 0x02 T oSat
10.30.0.0/16 0x03 T oSat
RX HDLC Addresses - 0x01
Hub CDM-IP 2 (RX Only)
(efi0) 10.10.1.2/16
IP DestNext Ho pType
0.0.0.0/010 .10.1.1ToEth
RX HDLC Addresses - 0x01
Static Routes
o
H
u
b
C
D
M
-
I
P
s
P
I
-
M
D
C
e
t
o
m
e
R
l
l
a
o
t
s
p
RX
2
5
6
k
b
p
s
t
o
H
u
b
C
D
M
-
I
P
2
Remote B, CDM-IP 4
Static Routes
IP DestNext HopT ype
10.10.0.0/16 0x01 T oSat
10.20.0.0/16 0x01 ToSat
RX HDLC Addresses - 0x03
1
Satellite dish
RX
TX
Remote A, CDM-IP 3
(efi0) 10.20.1.1/16
Static Routes
IP DestNext Ho pT ype
10.10.0.0/16 0x01 ToSat
10.30.0.0/16 0x03 ToSat
RX HDLC Addresses - 0x02
Satellite dish
RX
TX
(efi0) 10.30.1.1/16
Remote B, CDM-IP 5 (RX Only)
(efi0) 10.30.1.2/16
IP DestNext Ho pType
0.0.0.0/010 .30.1.1ToEth
RX HDLC Addresses - 0x03
RX
Static Routes
10/100 BaseT LAN
10.30.0.0 /16
10/100 BaseT LAN
PC
IP 10.20.1.100/16
GW 10.20.1.1
10.20.0.0 /16
PC
IP 10.30.1.100/16
GW 10.30.1.1
Figure 4. Router Mode, Partial Mesh, 1½ Hop Diagram
Full or partial “Mesh Network” Configuration – The “Star Network” configuration
works for a “hub-centric” network, where all traffic is either coming to, or from, one
central hub. There are several ways to send traffic between remote sites.
The first method does not require any additional CDM-IP modems than is described in
Figure 1, Router Mode, Point-to-Multipoint Diagram. Just by adding static routes, traffic
could be sent between Remote Site A and B. Remote site A and B would add a static
route for remote destination subnet, but since the path to the remotes must go through the
Hub, the Next Hop HDLC Address would be 0x01, not the HDLC address of the Remote.
Traffic from Remote B would be transmitted to Hub RX Only CDM-IP 2, forwarded to
Hub CDM-IP 1 and retransmitted to Remote A. With this method, all traffic must go
through a “double hop” in order to arrive at the destination.
To avoid the additional delay of the “double hop” method, an alternative method would
require an additional RX Only CDM-IP modem at remote site for every other remote site
connection needed. In the Figure above, Router Mode, Partial Mesh, 1½ Hop Diagram,
Remote Site B has added a RX Only CDM-IP and a static route to 10.20.0.0/16, Next
Hop 0x01 (through the Hub). Remote Site A has added a static route for 10.30.0.0/16,
Next Hop 0x03. To establish a connection between Remote A and B, Remote A would
reconfigure the TX frequency and data rate to set up a link with the Remote B RX Only
modem. The return path still must go from B to the Hub and then to A, but A has a direct
link to B, thus this is considered a 1½ hop link.
Additional RX Only or full duplex CDM-IPs can be added at Remotes based upon what
1½ hop link or single hop connections are required. Always use the following guidelines:
1) All CDM-IP modems will list the Site HDLC as their first RX HDLC Address.
2) For Satellite routes, the Next Hop is the destination Site HDLC (unless there is not a
direct satellite link, whereas the Next Hop must be the Hub Site).
3) RX Only CDM-IP modems will need a default To Ethernet route to a duplex CDM-IP
at the site in order to forward traffic.
Feature Support - The CDM-IP modem also has several standard and optional features
that can be used to further optimize security, performance and efficiency. The following
table defines how these features are supported in the two different Working Modes:
HDLC Address Mode
10/100BaseT Operation
Traffic
Access Lists
easyConnect Mode
Point-to-Point Only Point-to-Point, Small Network,
Enhancing the CDM-IP’s performance is easy. Additional features can be added quickly
on site, using the FAST access code purchased from Comtech EF Data. To enable these
features, simply enter the code at the front panel.
Option Description Install Option
Single Data/Code Rate User defined data rate FAST
Low Rate Variable 2.4 to < 512 kbps FAST (Standard)
Full Rate Variable 2.4 to < 5.0 Mbps (QPSK Maximum is 4.375 ) FAST
OQPSK FAST
8-PSK Requires Viterbi, Reed-Solomon Codec User
TX/RX L-Band ± 0.02 ppm L-Band modem with high stability reference Factory (Standard)
TX Only, L-Band ± 0.02 ppm Hardware limited with high stability reference Factory
Sequential or Viterbi Codec Modem can be supplied with either Viterbi or
Sequential
TX Reed-Solomon Codec Concatenates with Viterbi User
RX Reed-Solomon Codec Concatenates with Viterbi User
Turbo Codec Full Rate Turbo Codec. Requires Reed-
Solomon Codec removal.
AUPC Requires Reed-Solomon cards User or FAST
3xDES Data Encryption Uses NIST certified 3x core
Software Version 1.1.0 and later
IP Header Compression Software Version 1.1.0 and later FAST
Payload Compression Software Version 1.3.0 and later FAST
Quality of Service (QoS) TX required; Software Version 1.1.0 and later FAST
Primary Power: 48 Vdc Modem only, No BUC Factory
Primary Power: Auto-ranging
AC 90 to 264 Vac
ODU DC Power: 24V or 48V.
Primary Input = AC only
Factory
100W @24V
150W @ 48V
FAST
User
FAST
Factory
Note: Enabling the CDM-IP Demo Mode from the front panel can temporarily enable all
IP FAST Options (except 3xDES Encryption) for evaluation. Once enabled, the IP FAST
Options will be available for a total time period of seven (7) days (168 hours). The 7-day
Demo Mode is a cumulative counter (can be stopped and started at any time).
The optional Turbo Product Coding (TPC) is a recent development in FEC techniques
that delivers significant performance improvements when compared to Viterbi with
concatenated Reed-Solomon. TPC simultaneously offers increased coding gain, markedly
lower decoding delay (leading to improved TCP/IP performance), and bandwidth savings
of up to 40%. The TPC option includes two modes (BPSK 22/44 and BPSK 5/16) that
permit operation from exceptionally small antennas where flux density issues are of
concern.
1.4.2 3XDES ENCRYPTION WITH ABILITY TO CHANGE KEYS
The CDM-IP optionally supports 3xDES-128 encryption and decryption, for the highest
level security for link encryption. Each unit supports eight encryption keys and eight
decryption keys. The keys are user configurable. Each route can be assigned to be
encrypted by any of the eight available keys, random key method, or transmitted in clear.
Header Compression is also an optional feature of the CDM-IP modem. The CDM-IP
supports Header Compression for the following Ethernet and Layer 3 & 4 Headers:
Supported Ethernet Headers
Ethernet 2.0
Ethernet 2.0 + VLAN-tag
Ethernet 2.0 + MPLS
802.3-raw
802.3-raw + VLAN-tag
802.3 + 802.2
802.3 + 802.2 + VLAN-tag
802.3 + 802.2 + SNAP
802.3 + 802.2 + SNAP + VLAN-tag
802.3 + 802.2 + SNAP + MPLS
Supported Layer 3&4 Headers
IP
TCP
UDP
RTP (Codec Independent)
Header Compression reduces the required VoIP bandwidth by 60%. Example: A G.729a
voice codec, operating at 8 kbps, will occupy 32 kbps once encapsulated into IP framing
on a LAN. Using IP/UDP/RTP Header Compression, the same traffic only needs 10.8
kbps total WAN satellite bandwidth to cross the link. A total maximum of 64
simultaneous VoIP calls can be compressed. Normal Web/HTTP traffic can be reduced
an additional 10% via IP/TCP header compression.
Header Compression Configuration – Header Compression is completely independent
from QoS, and there is no configuration required except enabling the Header
Compression feature on both the sending and receiving CDM-IP modem. Packets with a
Header Compression supported header will automatically be identified for compression.
The only configuration consideration is the Header Compression Refresh Rate. This is
how many compressed header packets will be sent before a single full header packet is
sent. Some compressed header traffic could be lost during deteriorated satellite link
conditions. Sending a full header packet will allow the return of the traffic stream. The
Refresh Rate can be increased for poor satellite link conditions or decreased to further
reduce overhead.
Header Compression Statistics - These statistics will display the total bytes of the precompressed and post-compressed traffic and effective compression ratio.
Quality of Service (QoS) is an optional feature of the CDM-IP modem. The user may
select one of three modes of QoS operation:
• Mode 1 – QoS Rules based on Maximum Bandwidth and Priority
• Mode 2 – QoS Rules based on Minimum and Maximum Bandwidth
• Mode 3 – DiffServ
QoS Segmentation and Reassembly (SAR)
Packet Segmentation and Reassembly (SAR) is enabled automatically while QoS is
enabled. However, SAR is an adaptive process; it will trigger only if the packet latency
exceeds the threshold value (default to 20 msec). Latency value is calculated based on the
satellite transmission bandwidth. The minimum segment size was limited to 480 bytes
excluding satellite HDLC header in order to avoid satellite overhead and consumption of
CPU cycles.
1.4.4.1 MAXIMUM BANDWIDTH/PRIORITY MODE
QoS Rules can be assigned to up to 32 different types of flows to be defined by the user.
Flows can be defined by any combination of Protocol (FTP, UDP, RTP, etc.),
Source/Destination IP (specific or range), and/or Layer 3 Source/Destination Port.
Priority - A Priority level from 1 to 8 is assigned for each flow. The CDM-IP module
classifies each packet that is to be forwarded over the satellite. The packet will then have
a Priority assigned according to the defined QoS Rules. Any packet that does not meet a
QoS Rule is assigned to the Default Rule and will be assigned a Priority of 8. Priority 1
packets will be forwarded immediately, Priority 2 packets will be forwarded as soon as
there are no Priority 1 packets in the Queue, and so on. Any latency critical traffic, such
as VoIP/RTP should always be assigned Priority 1.
Maximum Bandwidth - This can also be assigned to a flow to restrict the Maximum
Bandwidth that any particular flow will utilize, or the default of no bandwidth restriction
can be selected.
Filtering - QoS also allows specific flows to be designated as “filtered”, so the CDM-IP
will discard traffic that the user does not want to forward over a satellite link.
QoS Rule Hierarchy - It is quite possible to have traffic that meets the definitions of
several QoS Rules. All traffic will be classified into the first QoS Rule that is a match, or
fall into the Default Rule. The most specific QoS Rule will always be first. For example,
a QoS Rule that identified a Source and Destination IP Address would be assigned ahead
of a rule that just defined RTP protocol. QoS Rules that have the same amount of
variables defined are sorted as follows:
Protocol Priority:
a. VOCE – Voice Real Time Protocol
b. VDEO – Video Real Time Protocol
c. RTPS – Real Time Protocol Signalling
d. RTP – All Real Time Protocol
e. PFTP – Passive File Transfer Protocol
f. HTTP – Hypertext Transfer Protocol
g. TELN – Telnet Protocol
h. SMTP – Simple Mail Transfer Protocol
i. SNMP – Simple Network Management Protocol
j. SQL – Structured Query Language Protocol
k. ORCL – ORACLE Protocol
l. CTRX – CITRIX Protocol
m. SAP – Service Announcement Protocol
n. UDP – User Datagram Protocol
o. TCP – Transmission Control Protocol
p. IP – All Internet Protocol
q. N-IP – All Non-Internet Protocol
2. Source IP Address or subnet defined.
3. Destination IP Address or subnet defined.
4. Source Port defined (lowest Port number first).
5. Destination Port defined (lowest Port number first).
The CDM-IP modem will sort each QoS rule as they are added and the QoS
Configuration display will be updated to reflect the order with which rules are matched.
QoS Statistics - Every QoS Rule defined can be monitored to see the traffic flow for
each Queue. These statistics will display the traffic sent in each Queue, the amount of
dropped traffic, and the number of Active Flows.
Protocol and Port Number Considerations - When defining QoS Rules, it is important
to be aware of specifics of the traffic for which the rule is intended.When selecting a
protocol for a QoS Rule, be aware that the CDM-IP allows for a very abroad selection
(such as IP) or a very specific protocol. For example, RTP traffic can consist of UDP
portion (for voice or video) and a TCP portion (for RTP signaling). These could have
separate QoS Rules created or all be included in a single Rule by selecting RTP as the
protocol. The following diagram illustrates where each protocol selection resides.
16
CDM-IP 300L IP-Centric Satellite Modem Rev. 1
p
CD/CDMIP300L.IOM
UDP
IP
RTP
TCP
Non IP
VOCE
VDEO
RTPS
FTPHTTP
TELNSMTP SAP
ORCLCTRX SQL
Selection of Source/Destination Ports should only be done if the user is aware of the port usage
of the desired protocol or application. There are well known ports for various protocols, but often
only the ‘command’ messaging is transacted on these ports and the ‘data’ is transferred through a
negotiated port.
The following table can be used as a reference for some well known Port numbers:
Port Description Port Description
1 TCP Port Service Multiplexer (TCPMUX) 118 SQL Services
7 ECHO 119 Newsgroup (NNTP)
20 FTP - Data 137 NetBIOS Name Service
21 FTP - Control 139 NetBIOS Datagram Service
22 SSH Remote Login Protocol 150 NetBIOS Session Service
23 Telnet 156 SQL Server
25 Simple Mail Transfer Protocol (SMTP) 161 SNMP
42 Host Name Server (Nameserv) 179 Border Gateway Protocol (BGP)
53 Domain Name System (DNS) 190 Gateway Access Control Protocol (GACP)
69 Trivial File Transfer Protocol (TFTP) 197 Directory Location Service (DLS)
70 Gopher Services 396 Novell Netware over IP
80 HTTP 443 HTTPS
108 SNA Gateway Access Server 444 Simple Network Paging Protocol (SNPP)
109 POP2 546 DHCP Client
110 POP3 547 DHCP Server
115 Simple File Transfer Protocol (SFTP) 1080 Socks
IMPORTANT
Once the QoS Rules are defined, each type of traffic flow should be
isolated and sent to verify that it is being sent in the intended QoS
Rule.
1.4.4.2 MINIMUM/MAXIMUM BANDWIDTH QOS MODE
QoS Rules can be assigned to up to 32 different types of flows to be defined by the user. Flows
can be defined by any combination of Protocol (FTP, UDP, RTP, etc.), Source/Destination IP
(specific or range), and/or Layer 3 Source/Destination Port.
Maximum Bandwidth - This can be assigned to a flow to restrict the Maximum Bandwidth that
any particular flow will utilize, or the default of no bandwidth restriction can be selected.
Minimum Bandwidth - Minimum specification that allows a committed information rate (CIR)
to be applied to user defined classes of traffic, or the default of no minimum bandwidth can be
selected.
Weighted Random Early Detection (WRED) – Without Weighted Random Early Detection
(WRED), output buffers fill during periods of congestion. When the buffers are full, tail drop
occurs; all additional packets are dropped. Since the packets are dropped all at once, global
synchronization of TCP hosts can occur as multiple TCP hosts reduce their transmission rates.
As the congestion clears, the TCP hosts increase their transmissions rates, resulting in waves of
congestion followed by periods where the transmission link is not fully used.
WRED allows for more graceful dropping of packets, as QoS queues get full. In the previous
CDM-IP release, a simple tail drop algorithm was applied to packets as they were being added to
the QoS queues. This can result in large number of contiguous packets being dropped which
causes many protocols such as RTP and TCP to ungracefully degrade performance in a overconsumed or bursty scenario. WRED applies a randomization which means that the percentage
change to drop packets increases as the queue becomes full, and minimizes the chances of global
synchronization. Thus, WRED allows the transmission line to be used fully at all times.
Filtering – Any specific flow can be designated as filtered (see Maximum
Bandwidth/Priority QoS).
QoS Rule Hierarchy – The QoS Rule Hierarchy is the same as Maximum
Bandwidth/Priority QoS.
QoS Statistics - QoS Statistics are displayed as Maximum Bandwidth/Priority QoS.
1.4.4.3 DIFFSERV QOS MODE
The CDM-IP QoS can also be set to DiffServ Mode to make it fully compliant to the Differential
Services QoS standards.
Class Selector DiffServ Code Points (DSCP) – Some implementations of DiffServ will
prioritize traffic by Class Selector assignment. This is defined in the DiffServ Code Points
(DSCP) within the IP header. The first 3 bits of the DSCP define the Class Selector Precedence
(or Priority):
Expedited Forwarding and Assured Forwarding DSCP – Another implementation of
DiffServ uses all 6 bits of the DSCP to define Expedited and Assured Forwarding:
DiffServ Type
Expedited Forwarding
Assured Forwarding – Class 1
Assured Forwarding – Class 2
Assured Forwarding – Class 3
Assured Forwarding – Class 4
Expedited Forwarding (EF) DSCP – This defines premium service and is
recommended for real time traffic applications such as VoIP and video conferencing.
Assured Forwarding (AF) DSCP – This defines 4 service levels and also uses the last 3
bits of the DSCP to define the Drop Precedence (Low, Medium, or High). The Drop
Precedence determines which packets will most likely be dropped during periods of over
congestion, similar to Weighted Random Early Detection (WRED). As a result, each of
the 4 AF service levels also have 3 Drop Precedence levels for which the CDM-IP
provides 12 seperate queues.
Minimum Bandwidth (AF only) - Minimum specification that allows a committed
information rate (CIR) to be applied to user defined classes of traffic, or the default of no
minimum bandwidth can be selected.
Maximum Bandwidth (AF only) - This can be assigned to a flow to restrict the
maximum bandwidth that any particular flow will utilize, or the default of no bandwidth
restriction can be selected.
NOTE: Minimum and maximum bandwidth is only configurable for each of the 4
Assured Forwarding classes.
NOTE: Typically, DiffServ is implemented using exclusively Class Selector DSCP or
exclusively Expedited and Assured Forwarding DSCP. The CDM-IP is fully DiffServ
compliant and will work with either DiffServ implementation or with a combination of
both.
1.4.5 PAYLOA D COMPRESSION
Traffic optimization through Payload Compression is another optional feature of the
CDM-IP modem.
- Framer II required
- FAST feature to upgrade
- Uses AHA chip
- Compression algorithm applied to all data (HDLC header excluded)
- Compression statistics are fed back to QoS in order to maximize WAN utilization
while maintaining priority, jitter and latency.
- 1024 simultaneous compression sessions to maximize compression across
multiple distinct traffic flows.
- Compression algorithm not applied to RTP streams because this traffic is already
compressed and would only INCREASE the sat bandwidth if compressed again.
- Additional statistics have been added to the compression statistics menu in order
to provide feedback on the compression efficiency that has been achieved.
ADLC vs LZS compression comparison
Note: These numbers have been generated by using an internally created test program.
This program takes the target benchmark files and splits the files into payload size chunks
and compresses each chunk in a separate invocation of the compression algorithm. This is
important to note because most compression algorithms are applied to the entire file data
set as a single invocation of the compression algorithm which is easier for other types of
compression algorithms (LZS, GZIP in specific). This, of course, does not apply to
streamed packet data across an IP network (ftp transfer, for example).
The CDM-IP Demo Mode enables the following IP optional features for seven days (168
hours):
IP Header Compression
Payload Compression
Quality of Service
To enable Demo Mode, use the CDM-IP Front Panel to select UTIL\DEMO\ON. The
seven day Demo Mode Timer will start but can be stopped at any time by setting Demo
Mode to OFF.
Operating Frequency Range 950-1750MHz, in100 Hz steps
Data Interface 10/100 BaseT Ethernet RJ45-8
Digital Data Rate 2.4 kbps to 5.000 Mbps, in 1 bit steps
Note: In some applications the practical lower data rate is
typically higher than19.2 kbps, depending upon the performance of
equipment used in conjunction with the CDM-IP 300L. These
applications include the use of a BUC or a LNB.
Sequential 1/2, 3/4, 7/8 rates
Reed-Solomon Concatenated per Intelsat
Reed-Solomon Concatenated per closed network
Trellis 2/3 rate (8-PSK)
Turbo 1/2, 3/4, 21/44, and 5/16 rates
Uncoded
Reed Solomon Interleaver Depth 8, closed network; Depth 4 or 8 per IESS-308, 309, and 310
Data Scrambling IESS-308 (V.35 Intelsat), IESS-309/310, FDC, V.35 (EFD/CSC),
Modified V.35, None
Differential Encoding/Decoding ON/OFF
External Reference Input
Test Modes
IF Loopback
RF Loopback
1, 5, 10, 20 MHz (75Ω 0 to 20 dBm on 50Ω BNC Female)
Note: Only 10 MHz allowed when operating with BUC and LNB
requiring 10 MHz reference from modem.
Available only when TX and RX are both L-band:
Disconnects the IF input from the RX input connector and couples
it to a sample of the TX IF output. The IF output is not affected.
Sets the demodulator frequency to the same value as the
modulator. For the modem to lock, an external IF loop must be
provided.
Note: Do not enable IF Loopback (or link the TX to RX by cable or
satellite link) on a CDM-IP 300L modem operating in
EasyConnect Mode when connected to a LAN. In this
configuration, EasyConnect will resend all layer 2
broadcast packets and cause a “broadcast storm” on the
LAN. To perform a loop test to verify the modem or
satellite link, set the CDM-IP modem to Router Mode.
1 RU1.75H x 19W x 19.18D inches (4.44 x 48.26 x 48.72 cm)
14.5 lbs. Maximum (6.51 kg)
Standard 19-inch (48.62 cm) rack mounts front and rear accepts
standard rack mount slides (no slides with 150W BUC power
supply option)
0 to +50°C (32 to 122°F)
95% non-condensing
from 1 cm onto a hard surface, the modem will not take any errors
or faults.
Table 2. Modulation Specifications
Transmit Specifications
Output Connector Type N Female
Output Frequency 950 to 1750 MHz in 100 Hz steps
Frequency Stability
External Reference Input (Standard) The External frequency reference connector is located
Reference Frequency Output The External frequency reference connector can be
± 0.02 ppm
Optional: ± 1.0 ppm
on the back panel. This allows the Frequency
Reference to be locked to an external reference
frequency standard.
Impedance 75Ω
Frequency 1, 5, 10 or 20 MHz (10 MHz required if
supplying 10 MHz reference to BUC or LNB)
Amplitude ≥ +0 dBm < +20 dBm
DC offset Capacitively coupled
Connector BNC female (50Ω)
used as an output. When selected from the front
panel, this output can be used to lock other equipment
to the Internal High Stability Reference of the selected
modem.
The output is 10 MHz, the level is +5 ± 5 dBm.
2. REF EXT Supplied at 10 MHz
Performance: For phase noise, refer to L-Band
Modulator 10 MHz. Frequency stability is the same
as the modulator.
LNB Voltage On center conductor of L-band input connector,
selectable ON/OFF: 13 and 18 volts per DiSEq 4.2
and 24 VDC at 500 mA, maximum
LNB Current Programmable MIN and MAX current alarms
LNB Band Control 22kHz tone outbound from L-band connector per
DiSEq 4.2.
Monitored Signals Receive signal level
Raw BER
Corrected BER range 10-3 to 10-12
Eb/N0, 2.0 to 16.0 dB
Rx frequency offset –500 kHz to +500 kHz
Table 4. Digital Data Rates
The digital data rate is selectable in 1 bit/s steps. The modem automatically calculates
and sets the symbol rate. Data rates entered that exceed the data rate or symbol rate
specification are rejected at entry. The symbol rate range is 4.8 to 2500 kHz.
The 10/100 BaseT Ethernet connector is a RJ45-8 modular jack located on the rear panel.
This interface is used for data traffic and M & C. This interface is a Network Interface
Card (NIC) pinout.
Table 12. Ethernet Interface Connector
Pin Function
1 Tx+
2 Tx-
3 Rx+
4 N/C
5 N/C
6 Rx-
7 N/C
2.3.1 ASYNC-SERIAL CONSOLE
The Console Connector is a RJ11-6 modular jack located on the rear panel. The AsyncSerial Console interfaces the IP Module Command Line Interface (CLI). This interface is
a RS-232 DCE interface.
The remote connector is a 9-pin subminiature male D connector (J6) located on the rear
panel of the modem. Screw locks are provided for mechanical security of the mating
connector.
The remote connector interfaces the M & C functions to a remote location. The remote
location can be an M&C computer located away from the modem, but attached via cable
to the remote connector. This DCE interface is user selectable for either RS-232 or RS-
The fault connector provides Form C contact closures for fault reporting. The three Form C
summary fault contacts, ratings 1 A maximum at 24 Vdc, 0.5 A at 120 Vac, are Modulator,
Demodulator, and Common Equipment.
The fault interface connection is a 9-pin subminiature female D connector (J7) located on
the rear panel of the modem. Screw locks are provided for mechanical security on the
mating connector.
Table 15. Fault Connector and Pinouts (J7)
Pin # Signal Function Name
1 Common equipment is not faulted NO
2 COM
3 Common equipment is faulted NC
4 Modulator is not faulted NO
5 COM
6 Modulator is faulted NC
7 Demodulator is not faulted NO
8 COM
9 Demodulator is faulted NC
Note:
A connection between the common (COM) and normally open (NO) contacts
indicates no fault.
The faults are open collector levels that indicate a modulator or demodulator failure. A
logic “1” indicates the faulted condition.
AGC_OUT is a programmable voltage, 0 to 10 V, for a receive signal level between
-25 and -60 dBm.
AUX 1 connection is a 9-pin female D connector (J9) located on the rear panel of the
modem. Screw locks are provided for mechanical security on the mating connector.
The alarm connector provides Form C contact closures for alarm reporting. The two
Form C summary fault contacts are Modulator and Demodulator.
The alarm connection is a 9-pin female D connector (J10) located on the rear panel of the
modem. Screw locks are provided for mechanical security on the mating connector.
Table 17. Alarms Connector and Pinouts (J10)
Pin # Signal Function Name
1 Alarm 1 is faulted NO
2 COM
3 Alarm 1 is not faulted NC
4 Alarm 2 is faulted NO
5 COM
6 Alarm 2 is not faulted NC
7 Alarm 3 is faulted NO
8 COM
9 Alarm 3 is not faulted NC
Notes:
2 Alarm 2 = TX
3 Alarm 3 = RX
1 Alarm 1 = Not used
2.3.8 RF OUTPUT CONNECTOR (CP1)
CP1 is a 50 Ω Type N connector for the TX IF signal. In normal operation, the output
will be a QPSK (Optional: OQPSK or 8-PSK) or BPSK modulated result of the Data I/O
connector between 950 to 1750 MHz, in 100 Hz steps
2.3.9 EXTERNAL REFERENCE (CP2)
CP2 is a BNC connector for an EXT REF. The input impedance is 75 Ω. For normal
operation, the desired carrier signal level is ≥ 0 dB.
EXT REF frequencies are EXT 1, EXT 5, EXT 10, and EXT 20 MHz.
2.3.10 RF INPUT CONNECTOR (CP3)
CP3 is a Type N connector for an RX IF signal. The input impedance is 75 Ω (Optional:
50 Ω). The input return loss is ≥ 10 dB from 950 to 1750 MHz.
A standard, detachable, non-locking, 3-prong power cord (IEC plug) supplies the
Alternating Current (AC) power to the modem. Observe the following:
Input Power
Input Voltage
55 W maximum, 40 W typical
90 to 132 or 175 to 264 Vac
Unit switches ranges
automatically.
Connector Type
Fuse Protection
I.E.C
1 A SLO-BLO
Line and neutral fusing
5 mm type fuses
2.3.12 GROUND CONNECTOR (GND)
A #10-32 stud on the rear panel of the modem is used for connecting a common chassis
ground among all equipment.
Note:
The AC power connector provides the safety ground.
45
3 Operation
3.1 METHODS OF OPERATION
The CDM-IP IP-Centric Modem may be setup and operated using any of the following
methods:
User Interface Connection Modem
Front Panel
Serial Remote
Control
Serial Command
Line Interface (CLI)
Telnet
Web Server
SNMP
Keypad ALL IP Address/Subnet
Serial RS-232/RS-485 via
Remote Control Port B
Serial RS-232 via Console
Port
Ethernet via 10/100 BaseT
IP interface
Ethernet via 10/100 BaseT
IP interface
Ethernet via 10/100 BaseT
IP interface
CDM Functions Reference
Functions
Chapter 4
only
ALL IP Address/Subnet
only
ALL ALL Chapter 9
ALL ALL Chapter 9
ALL ALL Chapter 10
ALL ALL Appendix A
Chapter 5
3.1.1 FRONT PANEL OPERATION
The front panel provides a menu driven, easy to operate, user interface that provides
control of all modem parameters plus selection of the IP address and network prefix
length. On the front panel of the unit, there are a keypad, the Liquid Crystal Display
(LCD), and ten LED indicators. The user enters data via the keypad, and messages are
displayed on the LCD. The LEDs indicate, in a summary fashion, the status of the unit.
Refer to Chapter 4 for detailed operations.
The CDM-IP modem provides a standard serial (RS-232, RS-485 4-wire, or RS-485 2wire) interface that can be used only for monitor and control of CDM-IP 300L modem
parameters (Monitor and Control of the CDM-IP 300L IP parameters is provided
separately via the Console Port interface). Access to this application is provided via the
‘Remote Control B’ (DB9) port on the back of the modem. Refer to Chapter 5 for
detailed operations using this interface.
3.1.3 SERIAL COMMAND LINE INTERFACE (CLI) OPERATIONS
The CDM-IP modem provides a serial (RS-232) command line interface that can be used
only for monitor and control of CDM-IP 300L IP parameters (Monitor and Control of the
CDM-IP 300L modem parameters is provided separately via the ‘Remote Control B’
port). Access to this application is provided via the ‘Console Port’ (RJ-11) port on the
back of the modem. Refer to Chapter 9 for detailed operations using this interface.
3.1.4 TELNET OPERATIONS
The CDM-IP modem provides a Telnet interface with an embedded, easy to use, multilevel, menu system that can be used to monitor and control all CDM-IP modem and IP
parameters. Access to this application is provided via the 10/100 BaseT IP interface (RJ-
45). Refer to Chapter 9 for detailed operations using this interface.
3.1.5 WEB SERVER OPERATION
The CDM-IP modem provides an embedded web server application that serves standard
HTML web pages that can be used to monitor and control all CDM-IP modem and IP
parameters. These web pages have been designed for optimal performance when using
Microsoft’s Internet Explorer version 5 or higher. Access to this application is provided
via the 10/100 BaseT IP interface (RJ-45). Refer to Chapter 10 for detailed operations
using this interface.
3.1.6 SNMP OPERATIONS
The CDM-IP modem supports Simple Network Management Protocol (SNMP) interface
that can be used to monitor and control all CDM-IP modem and IP parameters. Access
to this application is provided via the 10/100 BaseT IP interface (RJ-45). Refer to
Chapter 11 for detailed operations using this interface.
The user can control and monitor the base modem operation of the CDM-IP 300L from
the front panel, using the keypad and display. Only the IP module Ethernet IP Address
and IP Subnet can be viewed or changed from the front panel. Nested menus are used,
which display all available options, and prompt the user to carry out a required action.
The display has two lines each of 16 characters. On most menu screens, the user will
observe a flashing solid block cursor, which blinks at a once-per-second rate. This
indicates the currently selected item, digit, or field. Where this solid block cursor would
obscure the item being edited (for example, a numeric field) the cursor will automatically
change to an underline cursor.
If the user were to display the same screen for weeks at a time, the display could become
‘burnt’ with this image. To prevent this, the unit has a ‘screen saver’ feature, which will
activate after 1 hour. The top line of the display will show the Circuit ID (which can be
entered by the user) and the bottom line will show the circuit Eb/No value (if the demod
is locked) followed by ‘Press any key....’. The message moves from right to left across
the screen, then wraps around. Pressing any key will restore the previous screen.
The keypad comprises six individual
key switches, mounted directly behind
a fully sealed membrane overlay.
They have a positive ‘click’ action,
which provides the user with tactile
feedback. These six switches are
identified as UP ARROW, DOWN
ARROW, RIGHT ARROW, and LEFT
ARROW, ENTER and CLEAR.
Key Function
ENTER This key is used to select a displayed function or to execute a
modem configuration change.
ENTER
CLEAR
Figure 9. Keypad
CLEAR This key is used to back out of a selection or to cancel a
configuration change, which has not been executed using
[ENTER]. Pressing [CLEAR] generally returns the display to the
previous selection.
Left and Right
Diamond Keys
Top and Bottom
Diamond Keys
These keys are used to move to the next selection or to move the
cursor functions.
These keys are used primarily to change configuration data
(numbers). At times, they are also used to move from one section
to another.
Notes: 1
2
Throughout this chapter, [←] and [→] are used to indicate left and
right diamond keys.
Throughout this chapter, [↑] and [↓] are used to indicate top and
bottom diamond keys.
The modem responds by beeping whenever a key is pressed:
A single beep indicates a valid entry and the appropriate action was taken.
A double beep indicates an invalid entry or a parameter is not available for
The LCD is an active display showing 2 lines, each of 32 characters. The user can vary
the display contrast of the LCD window to optimize the view ability of the display in
varying lighting conditions.
4.1.3 LED INDICATORS
There are 10 LED indicators. The functions of these indicators are shown in the table
below.
Table 18. Front Panel LED Indicators
LED Color Condition
ALARMS
FAULTS
Yellow A TX function is in an alarm condition TRANSMIT
Off No active TX alarms.
RECEIVE
STORED EVENT
POWER Green Indicates power is supplied to modem.
Off Indicates modem id not receiving power.
Yellow A RX function is in an alarm condition.
Off No active RX alarms.
Red Indicates Tx problem. See Faults section for explanation TRANSMIT
Off Indicates normal functioning for Tx side of the modem.
Red Indicates Rx problem. See Faults section for explanation RECEIVE
Off Indicates normal functioning for Rx side of the modem.
Red A common equipment fault condition exists. COMMON
Off A fault has been logged and stored.
The fault may or may not be active.
Orange There is a Stored Event in the log, which can be viewed
from the front panel, or retrieved via the remote control
interface
Off There are no Stored Events
Green Indicates the modem is transmitting defined carrier. TRANSMITTER
ON
DETECT
TEST MODE
Off Indicates the modem is not transmitting defined carrier.
Green Framing on, EDMAC on, and unit defined as Slave CARRIER
Off Either no EDMAC, EDMAC Master, or Transparent mode
is selected
Green A Test Mode is selected (Example: IF Loopback)
RAW BER
CORRECTED BER
Eb/No
RECEIVE SIGNAL
SWEEP FREQUEN CY
*
BUFFER FILL
LNB CURRENT
ODU CURRENT
2
(1 Of 5)
2
MODULATOR
TX-V OQPSK 1/2
TX-IF FREQUEN CY
TX-IF OUTPUT
TX POWER LEVEL
SCRAMBLER
DIFF. ENCODER
CARRIER MODE
MODEM REFEREN CE
FSK OUTPU T
ODU POWER SUPPLY
ODU OUTPU T DE LAY
ODU 10 MHz REF
RS ENCODER
DEMODULATOR
RX-V OQPSK 1/2
RX-IF FREQUEN CY
DESCRAMBLER
DIFF. DECODER
RF LOOP BACK
IF LOOP BACK
BER THRESHOLD
SWEEP CENTER
SWEEP RANGE
REACQUISITION
LNB POWER
LNB VOLTAGE
LNB 10 MHz REF
RS DECODER
INTERFACE
INTRFC LOOP BACK
*
LOCAL AUPC
AUPC ENABLE
NOMINAL PPOWER
MINIMUM POWER
MAXIMUM POWER
TARGET NOISE
TRACKING RATE
LOCAL CL ACTION
REMOTE CL ACTION
Figure 10. Front Panel Modem Menu Tree (1 of 5)
54
CDM-IP 300L IP-Centric Satellite Modem Rev. 1
e
CD/CDMIP300L.IOM
FUNCTION SELECT
CONFIGURATION
MONITOR
1
FAULTS/ALARMS
STORED/FAULTS ,
1
REMOTE AUPC
UTILITY ,
*
COND ITI ONAL OR
OPTION DEPENDENT
See 1/5
1
See 2/5
2
See 3/5
3
See 4/5
4
See 5/5
5
4
45
34
CDM-IP 300L Front Panel Menu Tre
(2 Of 5)
CONFIGURATION
MODULATOR
DEMODULATOR
INTERFACE
LOCAL A UPC
*
1
1
1
1
SAVE
RECALL
FAULTS/ALAR MS
MODULATOR
DEMODULATOR
TX INTERFACE
RX INTERFACE
COMMON
OUTDOOR UNIT
STO RED FAULTS
MODULATOR
DEMODULATOR
TX INTERFACE
3
3
RX INTERFACE
COMMON
OUTDOOR UNIT
UNAVAL SECONDS
CLEAR ? ?
3
3
3
3
SAVE
CONFIGURATION #1 -5
RECALL
CONFIGURATION #1 - 5
MODULATOR
IF SYNTHESIZER
DATA CLOCK SYN
I CHANNEL
Q CHANNEL
AGC LEVEL
MODEM R EF ACT
MODEM R EF PLL
MODULE
CONFIGURATION
DEMODULATOR
CARRIER DETECT
IF SYNTHESIZER
I CHANNEL
Q CHANNEL
BER THRESHOLD
MODULE
CONFIGURATION
LNB CURRENT
TX INTERFA CE
TX CLK PLL
CONFIGURATION
RX INTERFACE
RX DATA/AIS
BUFFER CLK PLL
CONFIGURATION
COMMON
BATTERY/CLOCK
-12 VOLT SUPPLY
+12 VOLT SUPPLY
+5 VOLT SUPPLY
SELF TEST
CONTROLLER
IP MODULE
OUTDOOR UNIT
CURRENT
VOLTAGE
TEMPERA TUR E
PLL CLO CK
CHECKSU M
MODULATOR
IF SYNTHESIZER
DATA CLOCK SYN
I CHANNEL
Q CHANNRL
AGC LEVEL
MODEM R EF ACT
MODEM R EF PLL
MODULE
CONFIGURATION
ASSIGN TRANSMIT FILTERS
TX TERMINAL LO
MOD POWER OFFSET
ENCODER TYPE
SCRAMBLER
TX BPSK ORDERING
MOD SPECTRUM
TX-RS N/K DEEP
TX IESS-310 MODE
ODU ALARM - LOW
ODU ALARM - HIGH
RF MODE CONTROL
TX SYMBOL RATE
DEMODULATOR
ASSIGN RECEIVE FILTERS
RX TERMINAL LO
DECODER TYPE
DESCRAMBLER TYPE
RX BPSK ORDERING
DEMOD SPECTR UM
RX-RS N/K DEEP
RX IESS-3 10 MODE
LNB ALARM - LOW
LNB ALARM - HIGH
RX SYMBOL RATE
INTERFACE
TX OVERHEAD TYPE
RX OVERHEAD TYPE
OUTDOOR UNIT
ODU FSK A DDR ESS
ODU OUTPU T P OWER
ODU PWR L EVE LING
SYSTEM
TIME/DATE
REMOTE BAUD RATE
REMOTE ADDRESS
REMOTE TYPE
IP.NET PREFIX
OPERATION MODE
YEAR DISPLAY
TEST MODE STATUS
LAMP TEST ??
DISPLAY CONTRAST
M&C FIRMWARE
BOOT FIRMWARE
FPGA FIRMWARE
CIM FIRMWARE
IP DEMO MODE
EXT AGC: MAX PWR
EXT AGC: MIN PWR
MASTER RESET
MODEM TYP E
REV EMULATION
MODEM OPT ION S
CARD #1 TYPE
CARD #2 TYPE
CARD #3 TYPE
CARD #1 OPTIONS
CARD #2 OPTIONS
CARD #3 OPTIONS
LOCAL MOD EM AUP C
MODEM SER IAL #
CARD #1 SERIAL #
CARD #2 SERIAL #
CARD #3 SERIAL #
CONFIGURATION CODE MODEM
CONFIGURATION CODE - CARD #1
CONFIGURATION CODE - CARD #2
CONFIGURATION CODE - CARD #3
Programs the nominal power value of the
AUPC. The nominal power value can
range from -5 to -30 dBm, in 0.5 dBm
steps.
Upon entry, the current nominal power
value is displayed. Press [↑] or [↓] to
increment or decrement the digit at the
flashing cursor. Press [ENTER] to
execute the change.
NOMINAL POWER
Programs the nominal power value of the
AUPC. The nominal power value can
range from -5 to -30 dBm, in 0.5 dBm
steps.
Upon entry, the current nominal power
value is displayed. Press [↑] or [↓] to
increment or decrement the digit at the
flashing cursor. Press [ENTER] to
execute the change.
MINIMUM POWER
Programs the minimum power level of the
AUPC. The minimum power level can
range from -5 to -30 dBm, in 0.5 dBm
steps.
Upon entry, the current minimum power
level is displayed. Press [↑] or [↓] to
increment or decrement the digit at the
flashing cursor. Press [ENTER] to
MAXIMUM POWER
execute the change.
Programs the maximum power level of
the AUPC. The maximum power level
can range from -5 to -30 dBm, in 0.5 dBm
steps.
Upon entry, the current maximum power
level is displayed. Press [↑] or [↓] to
increment or decrement the digit at the
flashing cursor. Press [ENTER] to
execute the change.
TARGET NOISE
Programs the Eb/No target set point. The
Eb/No target set point ranges from 3.2 to
16.0 dB, in 0.1 dB steps.
Upon entry, the current Eb/No target set
point is displayed. Press [↑] or [↓] to
increment or decrement the digit at the
flashing cursor. Press [ENTER] to
execute the change.
Upon entry, the current maximum
tracking rate is displayed. Press [↑] or [↓]
to increment or decrement the digit at the
flashing cursor. Press [ENTER] to
execute the change.
LOCAL CL ACTION
Programs the local carrier loss for HOLD,
NOMINAL, or MAXIMUM.
Upon entry, the status of the local carrier
loss is displayed. Press [↑] or [↓] to make
the selection. Press [ENTER] to execute
the change.
REMOTE CL ACTION
Programs the remote carrier loss for HOLD,
NOMINAL, or MAXIMUM.
Upon entry, the status of the remote carrier
loss is displayed. Press [↑] or [↓] to make the
selection. Press [ENTER] to execute the
change.
4.2.1.1.1.5 Configuration - Save
DISPLAY SELECTIONS/DESCRIPTION
CONFIGURATION
SAVE
CONFIGURATION #1
SAVE
The Configuration Save menu allows
programming of configuration parameters into
memory on the M&C. There are five memory
locations that may be used to store specific
configuration setups that are used frequently.
After changing the configuration parameters
to the desired settings, enter the
Configuration Save menu and select memory
location 1 through 5. Press [ENTER] to
execute the save.
The Configuration Recall menu allows the
user to recall a previously saved configuration
setup. Upon entry, select memory location 1
through 5 by pressing [↑] or [↓]. Press
[ENTER] to execute the recall.
4.2.1.1.2 Function Select – Monitor
DISPLAY SELECTIONS/DESCRIPTION
FUNCTION SELECT
MONITOR
RAW BER
CORRECTED BER
RECEIVE SIGNAL
SWEEP FREQ
BUFFER FILL
TX-RS N/K DEPTH
RX-RS N/K DEPTH
LNB CURRENT
ODU CURRENT
4.2.1.1.2.1 Monitor – Raw BER
DISPLAY SELECTIONS/DESCRIPTION
RAW BER
No Data
4.2.1.1.2.2 Monitor – Corrected BER
DISPLAY SELECTIONS/DESCRIPTION
CORRECTED BER
No Data
Displays the current BER or “No Data” (if
carrier is not locked).
Range: < m.m E-e to > m.m E-e.
Note: Low limit is based on performance.
High limit is based on data/code rate.
Displays the current corrected BER or “No
Data” (if carrier is not locked).
Range: 1.0 E-3 to 1.0 E-12.
“-” indicates status of parameter is OK.
“+” indicates a fault.
Reverse contrast “+” indicates an alarm.
Data or AIS. When data fault is selected in
the Configuration Interface menu (4.2.1.1.1),
the fault indicates a data stable condition.
This indicates the data coming from the
satellite is all 1s or 0s (i.e., data is not
transitioning). When AIS is selected, the
Alarm indicates the data is all 1s from the
satellite. When None is selected in the
Configuration Interface menu, the RX
DATA/AIS Fault/Alarm is not activated.
Note: AIS is an alarm, not a switching fault.
Buffer clock phase-locked loop fault. Indicates
the buffer clock PLL is not locked