Premier Mounts CDM-600 specifications Description of D&I with ESC and Aupc

6.1 Description of D&I with ESC and AUPC

The Drop and Insert (D&I) framing has been extended with the release of firmware version

2.1.0to include the capability of adding high-rate ESC (Engineering Service Channel) and AUPC (Automatic Uplink Power Control). Currently this is available for E1 operation only. Refer to the manual for details of each of these features

The high-rate ESC channel operates the same for D&I as it does for IBS framing, using bytes 16 and 48 of the overhead channel, as well as half of byte 32, to pass the data characters over the satellite link. Because these bits are reserved for signaling, this new feature is not available for E1-CAS mode. The AUPC portion (which is not available with IBS framing) occupies the unused first bit of the unique word (byte 0).

To enable Drop and Insert with ESC and AUPC, the correct sequence of configuration must be followed. This applies when configuring via the front panel, or when using individual remote control commands. Prior to this new firmware version 2.1.0, neither ESC nor AUPC could be combined with D&I.

Configuration sequence:			Detailed in
1	Parameter	Setting	section
	Mode:	D&I	6.3.1.2	(requires D&I FAST option)
2	D&I type:	E1-CCS	6.3.1.6
3	ESC	On	6.3.1.8
4	Power level mode:	AUPC	6.3.1.3

The available ESC baud rates for D&I depend on Tx and Rx datarate. They are the same as those for high-rate IBS ESC. Pin-out information for the Overhead Interface Connector which carries the ESC channel is shown in section 5.3.

The maximum ESC baud rate is limited by the lower of the Tx or Rx data rates. If a data rate is edited so that a baud rate is no longer available, the baud rate will automatically be reduced to the next permitted value. The data-rate breakpoints are:

Data rate	Max ESC baud rate
64 kbps	2400
> = 128 kbps	4800
> = 256 kbps	9600
> = 384 kbps	14400
> = 512 kbps	19200
> = 768 kbps	28800
> =1280 kbps	38400	(Note: breakpoint change)

Note: For AUPC to be effective, it must be enabled on both the local & remote modems.

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