Exhibit 12.1

Supplemental Financial Schedule II

TeleCommunication Systems, Inc.
Valuation and Qualifying Accounts
(amounts in thousands)

Column A	Column B		Column C		Column D			Column E
	Balance		Additions,
	Beginning		Costs, and					Balance End of
Description	of Year		Expenses		Deductions			Year
Year ended December 31, 2007
Allowance for Doubtful Accounts	$	290	$	123	$	(148	)	$	265
Allowance for Inventory Obsolescence	$	616	$	100	$	(71	)	$	645
Year ended December 31, 2006
Allowance for Doubtful Accounts	$	233	$	284	$	(227	)	$	290
Allowance for Inventory Obsolescence	$	533	$	83	$	—		$	616
Year ended December 31, 2005
Allowance for Doubtful Accounts	$	690	$	243	$	(700	)	$	233
Allowance for Inventory Obsolescence	$	—	$	533	$	—		$	533