UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No. __)*

Tekelec

(Name of Issuer)

Common Stock

(Title of Class of Securities)

879101103

(CUSIP Number)

March 2, 2010

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

     o     Rule 13d-1(b)

     o     Rule 13d-1(c)

     þ     Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosure provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No. 879101103  13G Page 2  of  10 

1	NAME OF REPORTING PERSONS (I.R.S. Identification Nos. of above persons (entities only)
	Dansington Corp.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a)   o
	(b)   o
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION
	Bahamas
		5	SOLE VOTING POWER
NUMBER OF			0 shares
SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY EACH			4,275,650 shares, the voting power of which is shared with The Tango Trust and Pictet Overseas Trust Corporation Limited, as Trustees of The Tango Trust.
REPORTING		7	SOLE DISPOSITIVE POWER
PERSON
WITH			0 shares
		8	SHARED DISPOSITIVE POWER
			4,275,650 shares, the dispositive power of which is shared with The Tango Trust and Pictet Overseas Trust Corporation Limited, as Trustees of The Tango Trust.
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	4,275,650 shares
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
	o
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
	6.3%
12	TYPE OF REPORTING PERSON
	CO

CUSIP No. 879101103  13G Page 3  of  10 

1	NAME OF REPORTING PERSONS (I.R.S. Identification Nos. of above persons (entities only)
	The Tango Trust
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a)   o
	(b)   o
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION
	Bahamas
		5	SOLE VOTING POWER
NUMBER OF			0 shares
SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY EACH			4,275,650 shares, the voting power of which is shared with Dansington Corp. and Pictet Overseas Trust Corporation Limited, as Trustees of The Tango Trust.
REPORTING		7	SOLE DISPOSITIVE POWER
PERSON
WITH			0 shares
		8	SHARED DISPOSITIVE POWER
			4,275,650 shares, the dispositive power of which is shared with Dansington Corp. and Pictet Overseas Trust Corporation Limited, as Trustees of The Tango Trust.
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	4,275,650 shares
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
	o
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
	6.3%
12	TYPE OF REPORTING PERSON
	CO

CUSIP No. 879101103  13G Page 4  of  10 

1	NAME OF REPORTING PERSONS (I.R.S. Identification Nos. of above persons (entities only)
	Pictet Overseas Trust Corporation Limited
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a)   o
	(b)   o
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION
	Bahamas
		5	SOLE VOTING POWER
NUMBER OF			0 shares
SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY EACH			4,275,650 shares, the voting power of which is shared with Dansington Corp. and The Tango Trust.
REPORTING		7	SOLE DISPOSITIVE POWER
PERSON
WITH			0 shares
		8	SHARED DISPOSITIVE POWER
			4,275,650 shares, the dispositive power of which is shared with Dansington Corp. and The Tango Trust.
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	4,275,650 shares
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
	o
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
	6.3%
12	TYPE OF REPORTING PERSON
	CO

CUSIP No. 879101103  13G Page 5  of  10 

TABLE OF CONTENTS

	ITEM 1(a) Name of Issuer
	ITEM 1(b) Address of Issuer’s Principal Executive Offices
	ITEM 2(a) Name of Person Filing
	ITEM 2(b) Address of Principal Business Office or, if none, Residence
	ITEM 2(c) Citizenship
	ITEM 2(d) Title of Class of Securities
	ITEM 2(e) CUSIP Number
	ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO §§240.13D-1(B) OR 240.13D-2(B) OR (C), CHECK WHETHER THE PERSON FILING IS A
	ITEM 4. OWNERSHIP
	ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS
	ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON
	ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY
	ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP
	ITEM 9. NOTICE OF DISSOLUTION OF GROUP
	ITEM 10. CERTIFICATION
SIGNATURE
EXHIBIT INDEX
EX-99.1

ITEM 1(a)	Name of Issuer:
	Tekelec

ITEM 1(b)	Address of Issuer’s Principal Executive Offices:
	5200 Paramount Parkway, Morrisville, NC 27560

ITEM 2(a)

Name of Person Filing:

This Statement is being filed by Dansington Corp., by The Tango Trust (the “Trust”) and by Pictet Overseas Trust Corporation Limited (the “Trustee”), as Trustees of the Trust. The persons filing this Statement are sometimes together referred to as the “Reporting Persons.” Dansington Corp. is the record owner of the shares. The Trust is the principal beneficial owner of the equity interest in Dansington Corp. The Trustee is the trustee of the Trust.

ITEM 2(b)	Address of Principal Business Office or, if none, Residence:
	The address of the principal business office of Dansington Corp., the Trust and the Trustee is Bayside Executive Park, Building No. 1 West Bay Street, P.O. Box N-4837, Nassau, Bahamas.

ITEM 2(c)	Citizenship:
	Dansington Corp. is a company organized under the laws of the Bahamas. The Trust is a trust organized under the laws of the Bahamas. The Trustee is a company organized under the laws of the Bahamas.

ITEM 2(d)	Title of Class of Securities:
	Common Stock

ITEM 2(e)	CUSIP Number:
	879101103

ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO §§240.13D-1(B) OR 240.13D-2(B) OR (C), CHECK WHETHER THE PERSON FILING IS A:

(a)	o	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).
(b)	o	Bank as defined in section 3(a)(6) of the of the Act (15 U.S.C. 78c).
(c)	o	Insurance company as defined in section 3(a)(19) of the of the Act (15 U.S.C. 78c).
(d)	o	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).
(e)	o	An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);
(f)	o	An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);
(g)	o	A parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G).

CUSIP No. 879101103  13G Page 6  of  10 

(h)	o	A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	o	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	o	A non-US institution in accordance with §240.13d-1(b)(1)(ii)(J).
(k)	o	Group, in accordance with §240.13d-1(b)(1)(ii)(K).

Not applicable

ITEM 4. OWNERSHIP

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

(a) Amount beneficially owned:	4,275,650		shares
(b) Percent of class:		6.3	%
(c) Number of shares as to which such person has:
(i) Sole power to vote or to direct the vote	0		shares
(ii) Shared power to vote or to direct the vote	4,275,650		shares
(iii) Sole power to dispose or to direct the disposition of	0		shares
(iv) Shared power to dispose or to direct the disposition of	4,275,650		shares

ITEM 5.	OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS
	If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following: o
	Instruction: Dissolution of a group requires a response to this item.

ITEM 6.	OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON:
	To the best knowledge of each of the Reporting Persons, no person other than each of the Reporting Persons has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the 4,275,650 shares of Tekelec Common Stock beneficially owned by the Reporting Persons.

ITEM 7.	IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY
	Not applicable

ITEM 8.	IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP
	Not applicable

ITEM 9.	NOTICE OF DISSOLUTION OF GROUP
	Not applicable

ITEM 10.	CERTIFICATION
	Not applicable

CUSIP No. 879101103  13G Page 7  of  10 

SIGNATURE

     After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Date: March 2, 2010
DANSINGTON CORP.
By: Nassnom Investments Corp., a Director
	By:	/s/ Roland Aebischer
	Print Name:	Roland Aebischer
	Title:	Duly Authorized
	By:	/s/ E. Cretton Akbari
	Print Name:	Emmanuelle Cretton Akbari
	Title:	Duly Authorized
By: Nomnass Investments Corp., a Director
	By:	/s/ Roland Aebischer
	Print Name:	Roland Aebischer
	Title:	Duly Authorized
	By:	/s/ E. Cretton Akbari
	Print Name:	Emmanuelle Cretton Akbari
	Title:	Duly Authorized

PICTET OVERSEAS TRUST CORPORATION LIMITED, on behalf of itself and as Trustees of The Tango Trust
By:	/s/ Roland Aebischer
Print Name:	Roland Aebischer
Title:	Duly Authorized
By:	/s/ E. Cretton Akbari
Print Name:	Emmanuelle Cretton Akbari
Title:	Duly Authorized

The original statement shall be signed by each person on whose behalf the statement is filed or his authorized representative. If the statement is signed on behalf of a person by his authorized representative other than an executive officer or general partner of the filing person, evidence of the representative’s authority to sign on behalf of such person shall be filed with the statement, provided, however, that a power of attorney for this purpose which is already on file with the Commission may be incorporated by reference. The name and any title of each person who signs the statement shall be typed or printed beneath his signature.

NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See §240.13d-7 for other parties for whom copies are to be sent.

Attention: Intentional misstatements or omissions of fact constitute Federal criminal violations (See 18 U.S.C. 1001)

CUSIP No. 879101103  13G Page 8  of  10 

EXHIBIT INDEX

Exhibit Number	Exhibit	Page
1	Agreement to File Joint Statements on Schedule 13G	Page 9 of 10 pages