Cisco Rfgw1d Manual

 
 
 Simulcrypt Scrambling 
 
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Simulcrypt Scrambling 
Simulcrypt scrambling is a scrambling method whereby a single transport stream 
contains ECMs from different CA Systems.  Each CA system uniquely scrambles the 
same CW in the ECM so that elementary stream bandwidth is not increased. This 
enables different CA decoder populations to receive and correctly decode the same 
video and audio streams. 
 
  

 
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Timing Parameters 
When the EIS triggers the SCS to start a new CA event using a SCG (ID 1) 
provisioning message, the SCS requests a CW (CW 1) from the CWG.  Once the SCS 
receives the CW from the CWG, the SCS sends the CW together with the AC and 
ECM ID extracted from the SCG provisioning message to the ECMG.   
The ECMG encrypts the CW and AC and encapsulates this data into an ECM.  The 
ECMG sends this ECM to the SCS.  At a...

 
 
 Timing Parameters 
 
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When the SCS receives an SCG provisioning message update from the EIS indicating 
the end of the running CA event, the synchronizer extends the last Crypto Period 
until the end of the activation time extracted from the SCG provisioning message 
update. 
Once the activation time (tl) is reached, the set top box stops descrambling the 
service.  The SCS stops transmitting ECMs attached to this last Crypto Period at time 
(tl+1). 
 Transition Stop...

 
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Steps To Take 
Before scrambling can be used, the following steps must be completed. 
1 Prerequisite Configurations 
a Configure the GbE input ports, including Video/Data IP address. For 
information regarding GbE Interface Configuration, see the Cisco RF Gateway 
1 Configuration Guide, part number 78-4025112-01. 
b Configure the QAM outputs. For information regarding Enabling QAM 
Ports, see the Cisco RF Gateway 1 Configuration...

 
 
 Steps To Take 
 
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Result: The following page is displayed. 
 
2 Configure Broadcast Scrambling parameter as Enabled/Disabled. 
Result: The following pop-up message is displayed. 
 
3 Configure Dual Encryption Broadcast as Enabled/Disabled. This parameter is 
editable, only if the Broadcast Scrambling parameter is set as Enabled. 
Result: The following pop-up message is displayed. 
 
4 Click Apply to accept or Reset to abort. 
Note: Changing the broadcast scrambling...

 
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Configuring Scrambling General Settings 
General Settings Parameters 
The following table describes the General Settings parameters. 
Parameter Description 
Scramble Video and Audio The RFGW-1 can scramble all components of a service or only 
the video and audio component of a service (in case of service 
level scrambling). 
Check SCG at Provision 
Time 
When this parameter is on and the SCS receives a SCG 
provisioning message...

 
 
 Steps To Take 
 
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Configuring Scrambling Specific Parameters 
About the SCS Configuration GUI 
The SCS allows configuraing the scrambling specific parameters and assigning the 
following CA interfaces: 
 ECMG interfaces 
 EIS interfaces 
Note: The number of CA interfaces that can be assigned to a RF Gateway 1 using the 
SCS configurator is restricted to 40.  
Entitlement Control Message Generators 
To establish communication between the SCS of the RFGW-1 and an ECMG, a...

 
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Whenever the RFGW-1 sets up a new ECM stream, it selects a connected ECMG.  It 
then selects the ECMG connection with the highest priority that has available ECM 
capacity.  If the generators have an equal priority, the one with available ECM 
capacity and the least open streams will be selected.  When the load on an ECMG 
decreases, ECM streams will not automatically spread over equal priority ECMGs. 
As soon as the channel...

 
 
 Steps To Take 
 
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- IP A: streams 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 
- IP B: streams 11 
 Load Sharing and ECMG Backup 
Suppose an application has three ECMGs (IP A, B, and C) with a capacity of 10 
streams. IP A and B have priority 1 and IP C priority 2.  During stream setup, the 
streams are spread over the ECMGs as follows: 
- IP A (prio 1): streams 1, 3, 5, 7, 9, 11 
- IP B (prio 1): streams 2, 4, 6, 8, 10 
- IP C (prio 2): streams 
If IP A fails, the full capacity of IP...

 
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Adding an ECMG 
Follow the instructions below to add an ECMG. 
1 Navigate to the System/Scrambler page. 
Result: The following page is displayed. 
 
2 Click the + to expand the window and select ECMG Configuration. 
Result: The following page is displayed. 
 
3 To add a new ECMG, click Add New ECMG. 
Note: To select an ECMG you have already created, click Edit.