Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
BCE INC
   2. Issuer Name and Ticker or Trading Symbol
MOTIENT CORP [MNCP] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
1000 DE LA GAUCHETIERE OUEST, BUREAU 4100 MONTREAL		 3. Date of Earliest Transaction (Month/Day/Year)
03/07/2007
(Street)

QUEBEC, CANADA, A8 H3B 4Y7		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 03/07/2007(1)   X   9,031,213 A (1) 9,031,213 D  
Common Stock 03/07/2007(1)   S   4,500,000 D $ 8.15 4,531,213 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Option to acquire (1) (1) 03/07/2007(2)   X     9,031,213 10/05/2006 01/15/2007(2) Common Stock 9,031,213 $ 0 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
BCE INC
1000 DE LA GAUCHETIERE OUEST
BUREAU 4100 MONTREAL
QUEBEC, CANADA, A8 H3B 4Y7		     X    

Signatures

 /s/ L. Scott Thomson   03/08/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) TMI Communications Delaware, Limited Partnership ("TMI Delaware") had a contractual right to exchange 5,073,715 shares of common stock of TerreStar Networks, Inc and 1,887,133.89202 shares of common stock of TerreStar Global Ltd. (formerly known as TerreStar Networks Bermuda Ltd.) (collectively, the "TerreStar Shares") for 9,031,213 shares (the "Initial Motient Shares") of common stock of Motient Corporation ("Motient"). On January 5, 2007 those rights to exchange were transferred to BCE Inc. ("BCE"), then the parent of TMI Delaware. On January 15, 2007, BCE gave notice that it would be acquiring the Initial Motient Shares pursuant to those rights to exchange. On March 7, 2008 the parties definitively scheduled a closing for that exchange and BCE agreed to sell 4,500,000 of the Initial Motient Shares. On March 8, 2007, BCE exchanged the TerreStar Shares for the Initial Motient Shares and sold 4,500,000 of those shares.
(2) The option to acquire was exercised on January 15, 2007 but the parties did not schedule a closing date until March 7, 2007.
 
Remarks:
The original Form 3 filed for the shares covered by this Form 4 was filed jointly by BCE Inc. ("BCE"), TMI Communications
 Inc., 3924505 Canada Inc., TMI Communications and Company, Limited Partnership and TMI Communications Delaware, Limited
 Partnership ("TMI Delaware").  On January 5, 2007, the rights of TMI Delaware under the option to acquire shares covered by
 that original Form 3 were transferred directly to BCE in a transaction exempt from liability under Section 16(b) of the
 Securities Exchange Act of 1934 and as a result only BCE continued to have  beneficial ownership of those shares.
 Accordingly, the persons other than BCE Inc. who had jointly filed the original Form 3 are no longer filing parties under
 this Form 4.

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