Schedule 13G

SEC 1745
(6-01)

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

	UNITED STATES	OMB APPROVAL
	SECURITIES AND EXCHANGE COMMISSION	OMB Number: 3235-0145
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	SCHEDULE 13G	Estimated average burden hours per response. . 14.9

Under the Securities Exchange Act of 1934
(Amendment No. 1)*

CoSine Communications, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

221222102

(CUSIP Number)

December 31, 2001

(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)
[X]	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. 221222102

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Communications Ventures II, L.P. (“ComVentures II”)

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

	3.	SEC Use Only

	4.	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 46,962 shares, except that ComVen II, LLC (“CVII”), the general partner of ComVentures II, may be deemed to have sole power to vote these shares, and David P. Helfrich (“Helfrich”), Clifford H. Higgerson (“Higgerson”) and Roland A. Van der Meer (“Van der Meer”), the members of CVII, may be deemed to have shared power to vote these shares.

			6.		Shared Voting Power See response to row 5.

			7.		Sole Dispositive Power 46,962 shares, except that CVII, the general partner of ComVentures II, may be deemed to have sole power to dispose of these shares, and Helfrich, Higgerson and Van der Meer, the members of CVII, may be deemed to have shared power to dispose of these shares.

			8.		Shared Dispositive Power See response to row 7.

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 46,962

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

	11.	Percent of Class Represented by Amount in Row (9) 0.1%

	12.	Type of Reporting Person (See Instructions) PN

',FILE='C:\C2\chanson\2780_3\t_413951\j2780_sc13ga.htm',USER='chanson2',CD='Feb 12 19:12 2002' -->

CUSIP No. 221222102

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Communications Ventures Affiliates Fund II, L.P. (“CVAF”)

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

	3.	SEC Use Only

	4.	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 3,851 shares, except that CVII, the general partner of CVAF, may be deemed to have sole power to vote these shares, and Helfrich, Higgerson and Van der Meer, the members of CVII, may be deemed to have shared power to vote these shares.

			6.		Shared Voting Power See response to row 5.

			7.		Sole Dispositive Power 3,851 shares, except that CVII, the general partner of CVAF, may be deemed to have sole power to dispose of these shares, and Helfrich, Higgerson and Van der Meer, the members of CVII, may be deemed to have shared power to dispose of these shares.

			8.		Shared Dispositive Power See response to row 7.

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 3,851

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

	11.	Percent of Class Represented by Amount in Row (9) 0.0%

	12.	Type of Reporting Person (See Instructions) PN

',FILE='C:\C2\chanson\2780_3\t_413951\j2780_sc13ga.htm',USER='chanson2',CD='Feb 12 19:12 2002' -->

CUSIP No. 221222102

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) ComVen II, LLC

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

	3.	SEC Use Only

	4.	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 50,813 shares, of which 46,962 are directly owned by ComVentures II and 3,851 are directly owned by CVAF. CVII, the general partner of ComVentures II and CVAF, may be deemed to have sole power to vote these shares, and Helfrich, Higgerson and Van der Meer, the members of CVII, may be deemed to have shared power to vote these shares.

			6.		Shared Voting Power See response to row 5.

			7.		Sole Dispositive Power 50,813 shares, of which 46,962 are directly owned by ComVentures II and 3,851 are directly owned by CVAF. CVII, the general partner of ComVentures II and CVAF, may be deemed to have sole power to dispose of these shares, and Helfrich, Higgerson and Van der Meer, the members of CVII, may be deemed to have shared power to dispose of these shares.

			8.		Shared Dispositive Power See response to row 7.

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 50,813

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

	11.	Percent of Class Represented by Amount in Row (9) 0.1%

	12.	Type of Reporting Person (See Instructions) OO

',FILE='C:\C2\chanson\2780_3\t_413951\j2780_sc13ga.htm',USER='chanson2',CD='Feb 12 19:12 2002' -->

CUSIP No. 221222102

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Communications Ventures III, L.P.

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

	3.	SEC Use Only

	4.	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 0 shares.

			6.		Shared Voting Power 0 shares.

			7.		Sole Dispositive Power 0 shares.

			8.		Shared Dispositive Power 0 shares.

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 0

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

	11.	Percent of Class Represented by Amount in Row (9) 0.0%

	12.	Type of Reporting Person (See Instructions) PN

CUSIP No. 221222102

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Communications Ventures III CEO & Entrepreneurs’ Fund, L.P.

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

	3.	SEC Use Only

	4.	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 0 shares.

			6.		Shared Voting Power 0 shares.

			7.		Sole Dispositive Power 0 shares.

			8.		Shared Dispositive Power 0 shares.

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 0

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

	11.	Percent of Class Represented by Amount in Row (9) 0.0%

	12.	Type of Reporting Person (See Instructions) PN

',FILE='C:\C2\chanson\2780_3\t_413951\j2780_sc13ga.htm',USER='chanson2',CD='Feb 12 19:12 2002' -->

CUSIP No. 221222102

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) ComVen III, LLC

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

	3.	SEC Use Only

	4.	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 0 shares.

			6.		Shared Voting Power 0 shares.

			7.		Sole Dispositive Power 0 shares.

			8.		Shared Dispositive Power 0 shares.

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 0

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

	11.	Percent of Class Represented by Amount in Row (9) 0.0%

	12.	Type of Reporting Person (See Instructions) OO

',FILE='C:\C2\chanson\2780_3\t_413951\j2780_sc13ga.htm',USER='chanson2',CD='Feb 12 19:12 2002' -->

CUSIP No. 221222102

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) David P. Helfrich

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

	3.	SEC Use Only

	4.	Citizenship or Place of Organization U.S. Citizen

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 156,276 shares, all of which are owned by the Helfrich Family Trust, and Helfrich, as trustee of the Helfrich Family Trust may be deemed to have sole power to vote these shares.

			6.		Shared Voting Power 50,813 shares, of which 46,962 are directly owned by ComVentures II and 3,851 are directly owned by CVAF. Helfrich is a member of CVII, the general partner of ComVentures II and CVAF, and may be deemed to have shared power to vote these shares.

			7.		Sole Dispositive Power 156,276 shares, all of which are owned by the Helfrich Family Trust, and Helfrich, as trustee of the Helfrich Family Trust may be deemed to have sole power to dispose of these shares.

			8.		Shared Dispositive Power 50,813 shares, of which 46,962 are directly owned by ComVentures II and 3,851 are directly owned by CVAF. Helfrich is a member of CVII, the general partner of ComVentures II and CVAF, and may be deemed to have shared power to dispose of these shares.

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 207,089

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

	11.	Percent of Class Represented by Amount in Row (9) 0.2%

	12.	Type of Reporting Person (See Instructions) IN

',FILE='C:\C2\chanson\2780_3\t_413951\j2780_sc13ga.htm',USER='chanson2',CD='Feb 12 19:12 2002' -->

CUSIP No. 221222102

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Clifford H. Higgerson

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

	3.	SEC Use Only

	4.	Citizenship or Place of Organization U.S. Citizen

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 328,809 shares.

			6.		Shared Voting Power 50,813 shares, of which 46,962 are directly owned by ComVentures II and 3,851 are directly owned by CVAF. Higgerson is a member of CVII, the general partner of ComVentures II and CVAF, and may be deemed to have shared power to vote these shares.

			7.		Sole Dispositive Power 328,809 shares.

			8.		Shared Dispositive Power 50,813 shares, of which 46,962 are directly owned by ComVentures II and 3,851 are directly owned by CVAF. Higgerson is a member of CVII, the general partner of ComVentures II and CVAF, and may be deemed to have shared power to dispose of these shares.

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 379,622

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

	11.	Percent of Class Represented by Amount in Row (9) 0.4%

	12.	Type of Reporting Person (See Instructions) IN

',FILE='C:\C2\chanson\2780_3\t_413951\j2780_sc13ga.htm',USER='chanson2',CD='Feb 12 19:12 2002' -->

CUSIP No. 221222102

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Roland A. Van der Meer

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

	3.	SEC Use Only

	4.	Citizenship or Place of Organization The Netherlands

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 0 shares.

			6.		Shared Voting Power 50,813 shares, of which 46,962 are directly owned by ComVentures II and 3,851 are directly owned by CVAF. Van der Meer is a member of CVII, the general partner of ComVentures II and CVAF, and may be deemed to have shared power to vote these shares.

			7.		Sole Dispositive Power 0 shares.

			8.		Shared Dispositive Power 50,813 shares, of which 46,962 are directly owned by ComVentures II and 3,851 are directly owned by CVAF. Van der Meer is a member of CVII, the general partner of ComVentures II and CVAF, and may be deemed to have shared power to dispose of these shares.

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 50,813

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

	11.	Percent of Class Represented by Amount in Row (9) 0.1%

	12.	Type of Reporting Person (See Instructions) IN

',FILE='C:\C2\chanson\2780_3\t_413951\j2780_sc13ga.htm',USER='chanson2',CD='Feb 12 19:12 2002' -->

CUSIP No. 221222102

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Michael P. Rolnick

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

	3.	SEC Use Only

	4.	Citizenship or Place of Organization U.S. Citizen

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 0 shares.

			6.		Shared Voting Power 0 shares.

			7.		Sole Dispositive Power 0 shares.

			8.		Shared Dispositive Power 0 shares.

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 0

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

	11.	Percent of Class Represented by Amount in Row (9) 0.0%

	12.	Type of Reporting Person (See Instructions) IN

',FILE='C:\C2\chanson\2780_3\t_413951\j2780_sc13ga.htm',USER='chanson2',CD='Feb 12 19:12 2002' -->

Item 1.
	(a)	Name of Issuer CoSine Communications, Inc.
	(b)	Address of Issuer's Principal Executive Offices 3200 Bridge Parkway Redwood City, CA 94065

Item 2.
	(a)	Name of Person Filing This statement is filed by Communications Ventures II, L.P., a Delaware limited partnership (“ComVentures II”), Communications Ventures Affiliates Fund II, L.P., a Delaware limited partnership (“CVAF”), ComVen II, LLC, a Delaware limited liability company (“CVII”), Communications Ventures III, L.P., a Delaware limited partnership (“ComVentures III”), Communications Ventures III CEO & Entrepreneurs’ Fund, L.P., a Delaware limited partnership (“CV3CEF”), ComVen III, LLC, a Delaware limited liability company (“CVIII”), and David P. Helfrich (“Helfrich”), Roland A. Van der Meer (“Van der Meer”) and Clifford H. Higgerson (“Higgerson”), the members of CVII and CVIII, and Michael P. Rolnick (“Rolnick”) a member of CVIII. The foregoing entities and individuals are collectively referred to as the “Reporting Persons.”

		CVII, the general partner of ComVentures II and CVAF, may be deemed to have sole power to vote and sole power to dispose of shares of the issuer directly owned by ComVentures II and CVAF. Helfrich, Higgerson, Rolnick and Van der Meer are members of CVII and may be deemed to have shared power to vote and shared power to dispose of shares of the issuer directly owned by ComVentures II and CVAF.

		CVIII, the general partner of ComVentures III and CV3CEF, may be deemed to have sole power to vote and sole power to dispose of shares of the issuer directly owned by ComVentures III and CV3CEF. Helfrich, Van der Meer and Higgerson are members of CVIII and may be deemed to have shared power to vote and shared power to dispose of shares of the issuer directly owned by ComVentures III and CV3CEF.

	(b)	Address of Principal Business Office or, if none, Residence The address for each of the Reporting Persons is: ComVentures 305 Lytton Avenue Palo Alto, California 94301

	(c)	Citizenship ComVentures III, CV3CEF, ComVentures II and CVAF are Delaware limited partnerships. CVII and CVIII are Delaware limited liability companies. Helfrich, Rolnick and Higgerson are United States citizens. Van der Meer is a citizen of The Netherlands.

	(d)	Title of Class of Securities Common Stock

	(e)	CUSIP Number 221222102


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

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: See Row 9 of cover page for each Reporting Person.
	(b)	Percent of class: See Row 11 of cover page for each Reporting Person.
	(c)	Number of shares as to which the person has:
		(i)	Sole power to vote or to direct the vote See Row 5 of cover page for each Reporting Person.
		(ii)	Shared power to vote or to direct the vote See Row 6 of cover page for each Reporting Person.
		(iii)	Sole power to dispose or to direct the disposition of See Row 7 of cover page for each Reporting Person.
		(iv)	Shared power to dispose or to direct the disposition of See Row 8 of cover page for each Reporting Person.

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 [X].

Item 6.	Ownership of More than Five Percent on Behalf of Another Person.
Under certain circumstances set forth in the limited partnership agreements of ComVentures II, CVAF, ComVentures III and CV3CEF, and the limited liability company agreements of CVII and CVIII, the general and limited partners or members, as the case may be, of each of such entities may be deemed to have the right to receive dividends from, or the proceeds from, the sale of shares of the issuer owned by each such entity of which they are a partner or member.

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.

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: February 11, 2001

		Communications Ventures II, L.P.
		By: COMVEN II, L.L.C., its General Partner

		/s/ Clifford H. Higgerson
		Clifford H. Higgerson
		Member


		Communications Ventures AFFILIATES FUND II, L.P.
		By: COMVEN II, L.L.C., its General Partner

		/s/ Clifford H. Higgerson
		Clifford H. Higgerson
		Member


		comven ii, L.L.C.

		/s/ Clifford H. Higgerson
		Clifford H. Higgerson
		Member


		Communications Ventures III, L.P.
		By: COMVEN III, L.L.C., its General Partner

		/s/ Clifford H. Higgerson
		Clifford H. Higgerson
		Member


		Communications Ventures III CEO & ENTREPRENEURS’ FUND
		By: COMVEN III, L.L.C., its General Partner

		/s/ Clifford H. Higgerson
		Clifford H. Higgerson
		Member

	comven iii, L.L.C.

	/s/ Clifford H. Higgerson
	Clifford H. Higgerson
	Member


	DAVID P. HELFRICH

	/s/ David P. Helfrich
	David P. Helfrich


	MICHAEL P. ROLNICK

	/s/ Micheal P. Rolnick
	Michael P. Rolnick


	ROLAND A. VAN DER MEER

	/s/ Roland A. Van der Meer
	Roland A. Van der Meer


	CLIFFORD H. HIGGERSON

	/s/ Clifford H. Higgerson
	Clifford H. Higgerson

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)

EXHIBIT INDEX

		Found on
		Sequentially
Exhibit		Numbered Page

Exhibit A: Agreement of Joint Filing

exhibit A

Agreement of Joint Filing

The Reporting Persons hereby agree that a single Schedule 13G (or any amendment thereto) relating to the Common Stock of CoSine Communications, Inc. shall be filed on behalf of each of Reporting Persons. Note that copies of the applicable Agreement of Joint Filing are already on file with the appropriate agencies.