Cisco Rfgw1d Manual
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Steps To Take 78-4025112-01 Rev H0 187 Result: The following page showing the ECMG parameters is displayed. 4 To add ECMG connections, refer to Adding ECMG Connection Entries (on page 188). Removing an ECMG Follow the instructions below to remove an ECMG. 1 Click the box next to the ECMG entry to be removed. Result: The entry is highlighted as shown in the following screen. 2 Click Delete to delete the entry or Reset to abort. Tip: To remove more than one entry, click the check box of the first row, press and hold the SHIFT key, and click the check box of the last row.
Chapter 13 Encryption and Scrambling 188 78-4025112-01 Rev H0 ECMG Parameters The following table describes the ECMG parameters. Parameter Description ECMG Name ECMG name (max 20 characters) acts as a label to facilitate the identification of the ECMG in the CA system. ECMG Type Standard: DVB Simulcrypt. M_Crypt: (DVB Simulcrypt) allows empty ECMs to reset scrambling. Nagra: (DVB Simulcrypt) prefetch less ECMs in advance to enable quicker use of updated AC. CA System ID (Hex) Used to indicate the type of CA system applicable for the associated ECM stream. Contact your CA vendor for more information. CA System identifier is defined in table 3 CA_system_ID of ETR 162. CA Sub System ID (Hex) Used to differentiate multiple ECMGs from the same CA vendor in the CA application. Contact your CA vendor for more information. ECMG PID Source Select the desired ECM PID source. ECM ID: SCG Provisioning message is used to determine the ECM PID. Auto: The multiplexer of the RFGW-1 chooses the ECM PID from the list of free PIDs. Note: The list of free PIDs, determined by the multiplexer can be limited by defining limits (ECM PID Lower Limit, and ECM PID Upper Limit). ECMG PID Lower Limit (Hex) Lower limit for ECMG PID. ECMG PID Upper Limit (Hex) Upper limit for ECMG PID. ECMG Streams/ECMG Number of ECMG streams required. Open ECMG Streams/ECMG Number of open ECMG streams to the ECMG of the CA system. Automatic Channel ID Selection Enable/disable automatic channel ID selection. Enable Hot Backup Not supported at this time (future use). Follow the instructions below to change ECMG parameters. 1 Highlight the parameter to be changed and modify. 2 Click Apply. Changing ECMG Parameters Follow the instructions below to change ECMG parameters. 1 Highlight the parameter to be changed and modify. 2 Click Apply. Adding ECMG Connection Entries Follow the instructions below to add ECMG connection entries.
Steps To Take 78-4025112-01 Rev H0 189 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 Click Add New ECMG.
Chapter 13 Encryption and Scrambling 190 78-4025112-01 Rev H0 Result: The following page is displayed. 4 Click Connection. Result: The Connection table is displayed. 5 Click Add New Connection. Result: A new row is added to the Connection table. 6 In the Priority box of this entry, enter a channel priority number to determine the ECMG working mode. 7 In the IP Address box, enter the IP address of the ECMG. The octets of the IP address must be separated by dots. 8 In the Port box, enter the port number of the ECMG used for this channel. 9 In the ECMG Port Selection box, enter the Ethernet port to use for communication with the ECMG.
Steps To Take 78-4025112-01 Rev H0 191 10 In the Channel Id box, enter the channel Id number. A number between 0 and 65535 is allowed. If Automatic Channel ID Selection is supported, the ID is automatically set. Make sure the check box is selected. Note: All CA vendors do not support Automatic Channel ID Selection. 11 Click Apply to accept change or Reset to abort. Removing ECMG Connection Entires Follow the instructions below to remove ECMG connection entries. 1 In the Connections table, click the check box(es) of the entry that must be removed. Result: The entry is highlighted. 2 Click Apply to remove the entry. Tip: To remove more than one entry, click the check box of the first row, press and hold the [SHIFT] key, and then click the check box of the last row. Overruling ECMG Channel Status Messages Parameter Values In normal circumstances, the values in the Channel Status Message generated by the ECMG are used by the SCS to determine the ECM transmit timings. When particular values are missing, inaccurate, and cannot be changed on the ECMG, these values can be overruled using the SCS Configuration GUI. The table below describes the parameters that can be overruled. Parameter Description Overrule Max. Comp. Time (ms) The worst-case time needed by an ECM Generator to compute an ECM when all the streams in a channel are in use. This parameter determines the ECM Request Interval parameter used by the Simulcrypt Synchronizer. This parameter should be changed if the ECM Generator indicates that the ECMG is out of computational resources. Overrule Min. CP Duration (ms) The minimum amount of time a control word can be active before it can be changed. Note: For normal CVC simulcrypt, this setting should remain at 4 seconds. Overrule Transition Start Delay (ms) The amount of time between the start of the first cryptoperiod following a clear to scrambled transition and the start of the broadcasting of the ECM attached to this period. Overrule Transition Stop Delay (ms) The amount of time between the end of the last cryptoperiod preceding a scrambled to clear transition and the end of broadcasting the ECM attached to this period. Overrule Start Delay (ms) The amount of time between the start of a cryptoperiod and the start of broadcasting the ECM attached to this period. Overrule Stop Delay (ms) The amount of time between the end of a cryptoperiod and the end of broadcasting the ECM attached to this period. Overrule AC Start Delay (ms) The amount of time between the start of the first cryptoperiod following a change in the Access Criteria and the start of broadcasting the ECM attached to this period.
Chapter 13 Encryption and Scrambling 192 78-4025112-01 Rev H0 Overrule AC Stop Delay (ms) The amount of time between the end of the last cryptoperiod preceding a change in Access Criteria and the end of broadcasting the ECM attached to this period. Overrule Repetition Period (ms) The amount of time between two ECM packets at the output of the scrambler. Overrule Max. Streams: The maximum number of simultaneous open streams supported by an ECMG on a channel. If the ECMG returns 0, no maximum is known. The scrambler will not limit the amount of streams on a channel and no ECMs will be requested from the ECMG backup when maximum capacity is reached on the ECMG. To make sure an ECMG is not overloaded, the maximum number of streams can be overruled. Overrule Hint Bit Start Delay (ms) [Visible only for the Internal PowerKEY ECMG] The amount of time before the start of the new cryptoperiod from which the Hint Bit should be set in the PowerKEY ECM’s. Overrule Hint Bit Stop Delay (ms) [Visible only for the Internal PowerKEY ECMG] The amount of time before the start of the new cryptoperiod from which the Hint Bit should be cleared in the PowerKEY ECM’s. The following table shows the minimum, maximum, and default values of these parameters. Parameter Minimum Value Maximum Value Default Value Overrule Max Comp Time (ms) 0 60,000 5,000 Overrule Min CP Duration (ms) 1,000 3,600,000 10,000 Overrule Transition Start Delay (ms) -30,000 0 -2,000 Overrule Transition Stop Delay (ms) 0 30,000 2,000 Overrule Start Delay (ms) -30,000 30,000 -2,000 Overrule Stop Delay (ms) -30,000 30,000 -2,000 Overrule AC Start Delay (ms) -30,000 30,000 -2,000 Overrule AC Stop Delay (ms) -30,000 30,000 -2,100 Overrule Repetition Period (ms) 0 30,000 100 Overrule Max. Streams 0 30,000 512 Independent of the active/inactive state of a RFGW-1 participating in a CA application, the RFGW-1 will be connected to the ECMG by default. Changing Channel Status Message Parameter Values Follow the instructions below to change message parameter values. 1 Click Advanced.
Steps To Take 78-4025112-01 Rev H0 193 Result: The following table is displayed for all the ECMG’s other than the Internal PowerKEY ECMG. 2 Click the check box next to the parameter you want to change. Result: The parameter box becomes active. 3 Modify the setting. 4 Click Apply to accept change or Reset to abort.
Chapter 13 Encryption and Scrambling 194 78-4025112-01 Rev H0 When the ‘Advanced’ radio button is clicked for the Internal PowerKEY ECMG, the following table is displayed. If the encrypted content is to be streamed for the non-Cable Card STB’s running the Rovi Application, the ‘Hint Bit Stop Delay’ parameter must be set as -400 msecs and the Overrule Hint Bit Stop Delay flag must be set to True for the STBs to descramble the content without any issues. ECMG Descriptor Rules CA descriptors are data structures used to carry CA specific information for services or elementary streams. The RFGW-1 is able to update PMTs with CA descriptors according to the user configurable CA descriptor rules. The SCS configurator allows configuring CA descriptor rules and applying these rules to descriptors. Note: When the RFGW-1 scrambles a service or components within a service, CA descriptors in the PMT are sorted using the values of the ECM PIDs to which the CA descriptors apply. CA descriptors with the lowest value appear first. When a scrambled service is passed from input to output of the RFGW-1, the CA descriptor order is not changed. Adding a Descriptor Rule Follow the instructions below to add a descriptor rule. 1 Navigate to the System/Scrambler page.
Steps To Take 78-4025112-01 Rev H0 195 Result: The following page is displayed. 2 Click the + to expand the window and select ECMG Configuration. Result: The following page is displayed. 3 Click Add New ECMG.
Chapter 13 Encryption and Scrambling 196 78-4025112-01 Rev H0 Result: the following page is displayed. 4 Click Descriptor Rules. Result: The Descriptor Rules table is displayed. 5 Click Add New ECMG Descriptor Rule. Result: The rule is added to the table. 6 Click Apply to accept change or Reset to abort. 7 To make changes to any of the parameter settings, highlight and modify. Click Apply to accept changes. Removing a Descriptor Rule Follow the instructions below to remove a descriptor rule. 1 Select the check box next to the rule you want to remove.