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

SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 3)*

Polycom Inc.
(Name of Issuer)
Common Shares
(Title of Class of Securities)
73172K104
(CUSIP Number)
February 28, 2013
(Date of Event Which Requires Filing of this Statement)

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

 
 
Page 1 of 15

CUSIP No. 73172K104

  1. 	 	Names of reporting persons
 
Macquarie Group Limited	
  2.	 	Check the appropriate box if a member of a group (see instructions)
(a)   x         (b)   ¨
 	
  3.	 	SEC use only
 	
  4.	 	Citizenship or place of organization
 
    Sydney, New South Wales Australia	
Number of
shares
beneficially
owned by
each
reporting
person
with	  	5. 	  	Sole voting power
 
    0	
	  	6.	  	Shared voting power
 
    0	
	  	7.	  	Sole dispositive power
 
    0	
	  	8.	  	Shared dispositive power
 
    0	
  9.	 	Aggregate amount beneficially owned by each reporting person

119,110* deemed beneficially owned due to reporting person’s ownership of Macquarie Bank Limited, Delaware Management Holdings Inc. and Delaware Management Business Trust whose individual holdings are shown on the following forms.	
10.	 	Check if the aggregate amount in Row (9) excludes certain shares (see instructions)     ¨
 	
11.	 	Percent of class represented by amount in Row (9)
 
    0.06%	
12.	 	Type of reporting person (see instructions)
 
    HC	
 
*	Position as at March 7, 2013.	

Page 2 of 15

CUSIP No. 73172K104

  1. 	 	Names of reporting persons
 
Macquarie Bank Limited	
  2.	 	Check the appropriate box if a member of a group (see instructions)
(a)   x         (b)   ¨
 	
  3.	 	SEC use only
 	
  4.	 	Citizenship or place of organization
 
    Sydney, New South Wales, Australia	
Number of
shares
beneficially
owned by
each
reporting
person
with	  	5. 	  	Sole voting power
 
    0	
	  	6.	  	Shared voting power
 
    0	
	  	7.	  	Sole dispositive power
 
    0	
	  	8.	  	Shared dispositive power
 
    0	
  9.	 	Aggregate amount beneficially owned by each reporting person
 
119,110 deemed beneficially owned due to reporting person’s ownership of Delaware Management Holdings Inc. and Delaware Management Business Trust whose individual holdings are shown on the following forms.	
10.	 	Check if the aggregate amount in Row (9) excludes certain shares (see instructions)     ¨
 	
11.	 	Percent of class represented by amount in Row (9)
 
    0.06%	
12.	 	Type of reporting person (see instructions)
 
    CO	

Page 3 of 15

CUSIP No. 73172K104

  1. 	 	Names of reporting persons
 
Delaware Management Holdings Inc.	
  2.	 	Check the appropriate box if a member of a group (see instructions)
(a)   x         (b)   ¨
 	
  3.	 	SEC use only
 	
  4.	 	Citizenship or place of organization
 
    State of Delaware	
Number of
shares
beneficially
owned by
each
reporting
person
with	  	5. 	  	Sole voting power
 
    119,110	
	  	6.	  	Shared voting power
 
    0	
	  	7.	  	Sole dispositive power
 
    119,110	
	  	8.	  	Shared dispositive power
 
    0	
  9.	 	Aggregate amount beneficially owned by each reporting person
 
119,100 deemed beneficially owned due to reporting person’s ownership of Delaware Management Business Trust	
10.	 	Check if the aggregate amount in Row (9) excludes certain shares (see instructions)     ¨
 	
11.	 	Percent of class represented by amount in Row (9)
 
    0.06%	
12.	 	Type of reporting person (see instructions)
 
    HC	

Page 4 of 15

CUSIP No. 73172K104

  1. 	 	Names of reporting persons
 
Delaware Management Business Trust	
  2.	 	Check the appropriate box if a member of a group (see instructions)
(a)   x         (b)   ¨
 	
  3.	 	SEC use only
 	
  4.	 	Citizenship or place of organization
 
    State of Delaware	
Number of
shares
beneficially
owned by
each
reporting
person
with	  	5. 	  	Sole voting power
 
    119,110	
	  	6.	  	Shared voting power
 
    0	
	  	7.	  	Sole dispositive power
 
    119,110	
	  	8.	  	Shared dispositive power
 
    0	
  9.	 	Aggregate amount beneficially owned by each reporting person
 
    119,110	
10.	 	Check if the aggregate amount in Row (9) excludes certain shares (see instructions)     ¨
 	
11.	 	Percent of class represented by amount in Row (9)
 
    0.06%	
12.	 	Type of reporting person (see instructions)
 
    IA	

Page 5 of 15

													
Item 1.	 		  		  		  		
					
	 	(a)	  	Name of Issuer	  		  		
	 		  	Polycom Inc.	  		  		
					
	 	(b)	  	Address of Issuer’s Principal Executive Offices	  		  		
	 		  	4750 Willow Road, Pleasanton CA 94588-2708	  		  		
					
Item 2.	 		  		  		  		
					
	 	(a)	  	Name of Person Filing	  		  		
	 		  	This Schedule 13G is jointly filed by Macquarie Group Limited, Macquarie Bank Limited, Delaware Management Holdings, Inc. and Delaware Management Business Trust.	
					
	 	(b)	  	Address of Principal Business Office or, if none, Residence	  		  		
	 		  	The principal business address of Macquarie Group Limited and Macquarie Bank Limited is No.1 Martin Place Sydney, New South Wales, Australia. The principal business address of Delaware Management Holdings Inc, and Delaware Management Business Trust is 2005 Market Street, Philadelphia, PA 19103.	
					
	 	(c)	  	Citizenship	  		  		
	 		  	Macquarie Group Limited and Macquarie Bank Limited- Sydney, New South Wales, Australia Corporation Delaware Management Holdings Inc. and Delaware Management Business Trust – incorporated or formed under the laws of the State of Delaware.	
					
	 	(d)	  	Title of Class of Securities	  		  		
	 		  	Common Stock	  		  		
					
	 	(e)	  	CUSIP Number	  		  		
	 		  	73172K104	  		  		
		
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)	  	¨	  	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);	
				
	 	(b)	  	¨	  	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);	
				
	 	(c)	  	¨	  	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);	
				
	 	(d)	  	¨	  	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);	
				
	 	(e)	  	x	  	An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);	
				
	 	(f)	  	¨	  	An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);	
				
	 	(g)	  	x	  	A parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G);	
				
	 	(h)	  	¨	  	A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);	
				
	 	(i)	  	¨	  	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)	  	¨	  	A non-U.S. institution in accordance with § 240.13d–1(b)(1)(ii)(J);	
				
	 	(k)	  	¨	  	Group, in accordance with § 240.13d–1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with § 240.13d–1(b)(1)(ii)(J), please specify the type of institution:                                         	
 
Page 6 of 15

											
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 responses on the cover page hereto.	  		  		
					
	  	(b)	  	Percent of class:	  		  		
					
	  		  	See responses on the cover page hereto.	  		  		
					
	  	(c)	  	Number of shares as to which the person has:	  		  		
						
	  		  	(i)	  	Sole power to vote or to direct the vote	  		  		
						
	  		  		  	See responses on the cover page hereto.	  		  		
						
	  		  	(ii)	  	Shared power to vote or to direct the vote	  		  		
						
	  		  		  	0	  		  		
						
	  		  	(iii)	  	Sole power to dispose or to direct the disposition of	  		  		
						
	  		  		  	See responses on the cover page hereto.	  		  		
						
	  		  	(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   x .	
				
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 or Control Person	
	
See Exhibit A.	
				
Item 8.	  	Identification and Classification of Members of the Group	  		  		
	
Not applicable.	
				
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 acquired and are held in the ordinary course of business and 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.	
 
Page 7 of 15

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.

Macquarie Group Limited	 		 	March 8, 2013	
	 		 	Date	
			
/s/    Clara Kwan        	 		 	/s/    Heidi Mortensen        	
Signature	 		 	Signature	

Clara Kwan
Associate Director	 		 	Heidi Mortensen
Attorney-in-Fact	
			
Macquarie Bank Limited	 		 	March 8, 2013	
	 		 	Date	
			
/s/    Clara Kwan        	 		 	/s/    Heidi Mortensen        	
Signature	 		 	Signature	

Clara Kwan
Associate Director	 		 	Heidi Mortensen
Attorney-in-Fact	
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.

Delaware Management Holdings, Inc	 		 	March 8, 2013	
	 		 	Date	
			
/s/    Brian L. Murray        	 		 		
Signature	 		 		

Brian L. Murray
Chief Compliance Officer	 		 		
			
Delaware Management Business Trust	 		 	March 8, 2013	
	 		 	Date	
			
/s/    Brian L. Murray        	 		 		
Signature	 		 		

Brian L. Murray
Chief Compliance Officer	 		 		
 
Page 8 of 15

EXHIBIT A
AGREEMENT TO FILE JOINT ACQUISITION STATEMENTS
AGREEMENT made this 6th day of FEBRUARY, 2012 by and between Delaware Investments Family of Funds listed on Annex A hereto, Delaware Management Business Trust, Delaware Management Holdings, Inc, and the Macquarie Parties listed on Annex B hereto (collectively referred to as the “parties”).
WHEREAS, the parties hereto may be deemed to be the direct or indirect beneficial owners of the same equity securities for the purpose of the reporting requirements of Section 13(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and
WHEREAS, the regulations promulgated under Section 13(d) of the Exchange Act permit the joining of such beneficial owners in the filing of a single Joint Acquisition Statement reporting such ownership to the Securities and Exchange Commission.
NOW, THEREFORE, in consideration of the mutual covenants herein contained, and each of the parties hereto intending to be legally bound, it is agreed as follows:
1. In the event that any two or more parties shall be deemed to be the direct or indirect beneficial owners of the same equity security required to be reported to the Securities and Exchange Commission such parties may join together in the filing of a Joint Acquisition Statement with respect to that security. Additional persons who may after the date hereof be deemed to be the direct or indirect beneficial owners of the same equity security as a party hereto and required to be reported to the Securities and Exchange Commission (a “New Party”) may be added as a party this agreement by signing a counterpart hereof. An amendment to this agreement is deemed effective upon the signature of such new party and the amendment of the applicable Annex which may be affixed to this agreement as amended. Each party hereto agrees that this agreement, as it may be amended from time to time as provided herein, is a valid and binding agreement of each such party.
2. With respect to each Joint Acquisition Statement in which a party joins, each party acknowledges that (a) it will be eligible under applicable regulations of the Securities and Exchange Commission to join in the filing and (b) it will be responsible for the timely filing of such statement and any amendments thereto and the completeness and accuracy of the information concerning such party; but each such party shall not be responsible for the completeness and accuracy of the information concerning the other parties making the filing, unless such party knows or has reason to believe that such information with respect to such other parties is inaccurate.
3. The parties consent to the inclusion of a copy of this agreement as an exhibit to any Joint Acquisition Statement filed on behalf of any of them.
 
Page 9 of 15

IN WITNESS WHEREOF, the parties hereto have executed this agreement by their duly authorized officers as of the date set forth above.
DELAWARE INVESTMENTS FAMILY OF FUNDS (listed on Annex A hereto)
ATTEST BY:

/s/    Brian L. Murray        	 		 	/s/    David P. O’Connor        	
Signature	 		 	Signature	

Brian L. Murray
Chief Compliance Officer	 		 	David P/ O’Connor
General Counsel	
DELAWARE MANAGEMENT BUSINESS TRUST

/s/    Brian L. Murray        	 		 	/s/    David P. O’Connor        	
Signature	 		 	Signature	

Brian L. Murray
Chief Compliance Officer	 		 	David P/ O’Connor
General Counsel	
DELAWARE MANAGEMENT HOLDINGS, INC.

/s/    Brian L. Murray        	 		 	/s/    David P. O’Connor        	
Signature	 		 	Signature	

Brian L. Murray
Chief Compliance Officer	 		 	David P/ O’Connor
General Counsel	
THE MACQUARIE PARTIES (LISTED ON ANNEX B HERETO)
ATTEST BY:

/s/    Gus Wong        	 		 	/s/    Heidi Mortensen        	
Signature	 		 	Signature	

Gus Wong
Attorney-in-Fact	 		 	Heidi Mortensen
Attorney-in-Fact	
 
Page 10 of 15

JOINT FILING AGREEMENT AMENDMENT
Macquarie Americas Corp. may be deemed to be a direct or indirect beneficial owner of the same equity securities for the purpose of the reporting requirements of Section 13(d) of the Securities Exchange Act of 1934, as amended, as the parties to the Joint Filing Agreement dated February 6 th , 2012 and hereby agree to become a Macquarie party thereto by execution of the below counterpart to such agreement.
IN WITNESS WHEREOF, the parties hereto have executed this agreement by their duly authorized officers on March 2, 2012.
MACQUARIE AMERICAS CORP.
ATTEST BY:

/s/    Paul Beck        	 		 	/s/    Brian Hughes        	
Signature	 		 	Signature	

Paul Beck
Executive Director	 		 	Brian Hughes
Executive Director	
 
Page 11 of 15

JOINT FILING AGREEMENT AMENDMENT
Macquarie Group (US) Holdings No. 1 Pty Ltd. may be deemed to be a direct or indirect beneficial owner of the same equity securities for the purpose of the reporting requirements of Section 13(d) of the Securities Exchange Act of 1934, as amended, as the parties to the Joint Filing Agreement dated February 6 th , 2012 and hereby agree to become a Macquarie party thereto by execution of the below counterpart to such agreement.
IN WITNESS WHEREOF, the parties hereto have executed this agreement by their duly authorized officers on September 20, 2012.
Macquarie Group (US) Holdings No. 1 Pty Ltd
ATTEST BY:

/s/    Heidi Mortensen        	 		 	/s/    Gus Wong        	
Signature	 		 	Signature	

Heidi Mortensen
Attorney-in-Fact	 		 	Gus Wong
Attorney-in-Fact	
 
Page 12 of 15

Annex A— Delaware Investments Family of Funds
DELAWARE GROUP EQUITY FUNDS I
DELAWARE GROUP EQUITY FUNDS II
DELAWARE GROUP EQUITY FUNDS III
DELAWARE GROUP EQUITY FUNDS IV
DELAWARE GROUP EQUITY FUNDS V
DELAWARE GROUP INCOME FUNDS
DELAWARE GROUP LIMITED-TERM GOVERNMENT FUNDS
DELAWARE GROUP CASH RESERVE
DELAWARE GROUP GOVERNMENT FUND
DELAWARE GROUP STATE TAX-FREE INCOME TRUST
DELAWARE GROUP TAX-FREE FUND
DELAWARE GROUP GLOBAL & INTERNATIONAL FUNDS
DELAWARE GROUP TAX-FREE MONEY FUND
DELAWARE GROUP ADVISER FUNDS
DELAWARE VIP TRUST
DELAWARE POOLED TRUST
DELAWARE GROUP FOUNDATION FUNDS
DELAWARE INVESTMENTS DIVIDEND AND INCOME FUND, INC.
DELAWARE ENHANCED GLOBAL DIVIDEND AND INCOME FUND
VOYAGEUR INSURED FUNDS
VOYAGEUR INTERMEDIATE TAX FREE FUNDS
VOYAGEUR MUTUAL FUNDS
VOYAGEUR MUTUAL FUNDS II
VOYAGEUR MUTUAL FUNDS III
VOYAGEUR TAX FREE FUNDS
DELAWARE INVESTMENTS COLORADO MUNICIPAL INCOME FUND, INC.
DELAWARE INVESTMENTS NATIONAL MUNICIPAL INCOME FUND
DELAWARE INVESTMENTS MINNESOTA MUNICIPAL INCOME FUND II, INC.
 
Page 13 of 15

Annex B — the Macquarie Parties
Macquarie Group Limited
Macquarie Bank Limited
Macquarie Affiliated Managers (USA) Inc.
Macquarie Affiliated Managers Holdings (USA) Inc.
Macquarie Americas Holdings Pty Ltd.
Macquarie B.H. Pty Limited
Macquarie FG Holdings Inc.
Macquarie Funding Holdings Inc.
Macquarie Investment Management Limited
Macquarie Americas Corp.
Macquarie Group (US) Holdings No. 1 Pty Ltd
 
Page 14 of 15

EXHIBIT B
Powers of Attorney for Macquarie Group Limited and Macquarie Bank Limited incorporated by reference to 13G filings made by Macquarie Group Limited and Macquarie Bank Limited on September 9, 2011.
 
Page 15 of 15