CUSIP No. 591689 10 4 SCHEDULE 13G
(Amendment No. 2) Page 1 of 7 Pages

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

SCHEDULE 13G
(Amendment No. 2)

Under the Securities Exchange Act of 1934*

METROMEDIA FIBER NETWORK, INC.

(Name of Issuer)

Class A Common Stock, Par Value $0.01

(Title of Class of Securities)

591689 10 4

(CUSIP Number)

April 22, 2002

(Date of Event Which Requires Filing of this Statement)

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

	Rule 13d-1(b)
	Rule 13d-1(c)
	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 disclosures 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. 591689 10 4 SCHEDULE 13G
(Amendment No. 2) Page 2 of 7 Pages

1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only).
	Nortel Networks Corporation

2. Check the Appropriate Box if a Member of a Group
(See Instructions)

(a)   

(b)   

3. SEC Use Only

4.	Citizenship or Place of Organization
	Canada

	5.	Sole Voting Power
		42,914,884
Number of	6.	Shared Voting Power
Shares
Beneficially		0
Owned By
Each Reporting	7.	Sole Dispositive Power
Person With
		42,914,884
	8.	Shared Dispositive Power
		0

9.	Aggregate Amount Beneficially Owned by Each Reporting Person
	42,914,884

10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions).
	Not Applicable

11.	Percent of Class Represented by Amount In Row (9)
	6.0%

12.	Type of Reporting Person (See Instructions)
	CO

CUSIP No. 591689 10 4 SCHEDULE 13G
(Amendment No. 2) Page 3 of 7 Pages

Item 1.

(a)	Name of Issuer:
	Metromedia Fiber Network, Inc.
(b)	Address of Issuer’s Principal Executive Offices:
	c/o Metromedia Fiber Network Services, Inc. 360 Hamilton Avenue White Plains, New York 10601 U.S.A.

Item 2.

(a)	Name of Person Filing:
	Nortel Networks Corporation
(b)	Address of Principal Business Office or, if none, Residence:
	Nortel Networks Corporation 8200 Dixie Road, Suite 100 Brampton, Ontario L6T 5P6 Canada
	Attention: Corporate Secretary
(c)	Citizenship:
	Nortel Networks Corporation is a Canadian corporation.
(d)	Title of Class of Securities:
	Class A Common Stock, Par Value $0.01
(e)	CUSIP No.:
	591689 10 4

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:
	Not Applicable.

CUSIP No. 591689 10 4 SCHEDULE 13G
(Amendment No. 2) Page 4 of 7 Pages

Item 4. Ownership

(a)	Amount Beneficially Owned:
	42,914,884
(b)	Percent of Class:
	6.0%
(c)	Number of shares as to which the person has:

(i)	sole power to vote or to direct the vote:
	42,914,884
(ii)	shared power to vote or to direct the vote:
	0
(iii)	sole power to dispose or to direct the disposition of:
	42,914,884
(iv)	shared power to dispose or to direct the disposition of:
	0

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 .
Item 6.	Ownership of More than Five Percent on Behalf of Another Person
	Not Applicable.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company
	See Exhibit A.
Item 8.	Identification and Classification of Members of the Group
	Not Applicable.

CUSIP No. 591689 10 4 SCHEDULE 13G
(Amendment No. 2) Page 5 of 7 Pages

Item 9.	Notice of Dissolution of Group
	Not Applicable.
Item 10.	Certification
	By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

CUSIP No. 591689 10 4 SCHEDULE 13G
(Amendment No. 2) Page 6 of 7 Pages

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.

Dated:  April 23, 2002	NORTEL NETWORKS CORPORATION
	By:	/s/ DOUGLAS C. BEATTY
		Douglas C. Beatty Controller
	By:	/s/ BLAIR F. MORRISON
		Blair F. Morrison Assistant Secretary

CUSIP No. 591689 10 4 SCHEDULE 13G
(Amendment No. 2) Page 7 of 7 Pages

EXHIBIT A

The 42,914,884 shares beneficially owned by Nortel Networks Corporation as at April 22, 2002 consist of 42,914,884 shares of Class A Common Stock of Metromedia Fiber Network, Inc. (“MFN”) that are issuable upon the exercise of the remainder of a warrant to purchase shares of Class A Common Stock of MFN issued on October 1, 2001 and exercisable commencing December 20, 2001. The warrant was originally exercisable for 87,143,243 shares of Class A Common Stock of MFN, after giving effect to certain anti-dilution adjustment provisions, which was further adjusted to 85,829,769 shares. The number of shares of Class A Common Stock of MFN that are beneficially owned by Nortel Networks Corporation upon the exercise of the warrant was reduced to 42,914,884 after the sale of part of the warrant to a third-party purchaser on April 22, 2002. The remainder of the warrant is held by Nortel Networks Inc., a wholly-owned subsidiary of Nortel Networks Limited, which in turn is a wholly-owned subsidiary of Nortel Networks Corporation.

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