Cisco DNCS System Release 2.8.1 3.8.1 4.3.1 User Guide
Basic Parameters - Content MQAM
Use the following fields when you manage the basic parameters for a content MQAM modulator.
Field
Description
Headend Name
The headend associated with this content modulator.
QAM Name
The name of this modulator.
You can use up to 20 alphanumeric characters. Be sure to use a name that is
consistent with the naming scheme used on your network map.
consistent with the naming scheme used on your network map.
Example: A name of VODhub1Q43 could represent a modulator whose IP
address ends in 43 that processes VOD data for Hub 1.
address ends in 43 that processes VOD data for Hub 1.
MAC Address
The MAC address for this content modulator.
IP Address
The IP address for this content modulator.
Be careful to properly place the dots (.) between numbers.
Tip: When entering IP addresses, type a period to move from octet to octet.
Do
Do
not
press the Tab key to move from octet to octet; pressing the Tab key
moves the cursor to the next field on the window.
Subnet Mask
The subnet mask where this modulator resides.
If your system uses a standard network configuration, type 255.255.255.0.
Otherwise, type the subnet mask as assigned by your system administrator.
Otherwise, type the subnet mask as assigned by your system administrator.
Modulation Type
The type of modulation this modulator uses. For example, if this is a 256 QAM
modulator that uses ITU B modulation, you would select ITU J.83 Annex B (6
MHz).
modulator that uses ITU B modulation, you would select ITU J.83 Annex B (6
MHz).
The type of modulation affects the total bandwidth available for setting up
sessions on the modulator:
sessions on the modulator:
Modulators using 64-QAM support a total bandwidth of 26.971 Mbps.
Modulators using 256-QAM support a total bandwidth of 38.811 Mbps.
Default Gateway
The IP address of your default gateway.
Using a default gateway speeds up the reconnection process that occurs after a
QAM is rebooted.
QAM is rebooted.
Administrative State Defines whether or not this modulator is enabled or not.
When Online is selected, the modulator is enabled.
When Offline is selected, the modulator is disabled.
Important: If you are adding a QAM modulator to the DNCS, do not
place the modulator online until you have set up the connections
between the modulator and the MPEG source that feeds the modulator.
For assistance, go to
place the modulator online until you have set up the connections
between the modulator and the MPEG source that feeds the modulator.
For assistance, go to
Allow SI
Defines whether or not this modulator will process system information (SI) and
send the SI to all hubs in the headend. Use the following guidance to set this
option:
send the SI to all hubs in the headend. Use the following guidance to set this
option:
When this option is selected, the modulator can process SI and send
the SI to all hubs in the headend.
When this option is not selected, this modulator cannot process SI.
Important: Select this option only for a distinguished QAM modulator or
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