SCHEDULE 1.1(E) Existing Letters of Credit

ACS Dataline of the Northwest, Inc., an Oregon corporation

ADS Telecom, Inc., a Florida corporation

B & C Telephone, Inc., a Washington corporation

BBOX Holdings Mexico LLC, a Delaware limited liability company

BBOX Holdings Puebla LLC, a Delaware limited liability company

BCS II, LLC, a Delaware limited liability company

Black Box Ventures Holding Company, a Delaware corporation

CBS Technologies Corp., a New York corporation

LOGOS Communications Systems, Inc., an Ohio corporation

Network Communications Technologies, Inc., a North Carolina corporation

NextiraOne California L.P., a California limited partnership

NextiraOne New York, LLC, a Delaware limited liability company

NXO Installation, LLC, a Delaware limited liability company

PS Tech Video, LLC, a California limited liability company

PS Technologies, LLC, a Maryland limited liability company

Quanta Systems, LLC, a Delaware limited liability company

UCI Communications LLC, a South Carolina limited liability company

Liens represented by that UCC-1 financing statement, filed October 31, 2014 in the office of the Delaware Secretary of State (File # 2014 ###-###-####), as amended on November 12, 2014 (File #2014 ###-###-####, and as further amended on December 31, 2014 (File #2014 ###-###-####) and January 26, 2015 (File # 2015 0328566), in favor of De Lage Landen Financial Services, Inc. with respect to certain leased equipment of Black Box Corporation.

Liens represented by that UCC-1 financing statement, filed May 2, 2012 in the office of the Texas Secretary of State (File # 120013940858), as amended on July 17, 2012 (File #1200226398), and as further amended on July 17, 2012 (File # 1200226401), April 19, 2013 (File # 1300123619), and a collateral change was filed on August 2, 2013 (File # 1300248712) in favor of McGrath RentCorp and TRS-Rentelco with respect to certain leased equipment of ACS Dataline LP.

Liens represented by that UCC-1 financing statement, filed on December 20, 2012 in the office of the Delaware Secretary of State (File #20124980373) in favor of Canon Financial Services with respect to certain equipment of Black Box Corporation of Pennsylvania.

Liens represented by that UCC-1 financing statement, filed on February 6, 2013 in the office of the Delaware Secretary of State (File #20130492760) in favor of Canon Financial Services with respect to certain equipment of Black Box Corporation of Pennsylvania.

Liens represented by that UCC-1 financing statement, filed on February 7, 2013 in the office of the Delaware Secretary of State (File #20130520404) in favor of Canon Financial Services with respect to certain equipment of Black Box Corporation of Pennsylvania.

Liens represented by that UCC-1 financing statement, filed on January 12, 2015 in the office of the Tennessee Secretary of State (File #422665887) in favor of Mitel Networks, Inc. with respect to Proceeds, Accounts Receivable and Contract Rights pertaining to Inventory acquired from Mitel by Black Box Network Services, Inc. – Government Solutions.

Liens represented by that UCC-1 financing statement, filed on April 23, 2015 in the office of the Secretary of the Commonwealth of Massachusetts (File #201519393610) in favor of Mitel Networks, Inc. with respect to Proceeds, Accounts Receivable and Contract Rights pertaining to Inventory acquired from Mitel by Mutual Telecom Services, Inc.

Liens represented by that UCC-1 financing statement, filed on October 3, 2007 in the office of the Minnesota Secretary of State (File #200718450972) and continued on August 6, 2012 (File # 20122917739) in favor of Hewlett Packard Financial Services Company with respect to certain equipment and software leased from Hewlett Packard by Norstan Communications, Inc.

Liens represented by that UCC-1 financing statement, filed on August 19, 2011 in the office of the Minnesota Secretary of State (File #201125283925) in favor of Mitel Networks, Inc. with respect to Proceeds, Accounts Receivable and Contract Rights pertaining to Inventory acquired from Mitel by Norstan Communications, Inc.

Liens represented by that UCC-1 financing statement, filed on December 5, 2011 in the office of the New York Secretary of State (File #201112050646111) in favor of Mitel Networks, Inc. with respect to Proceeds, Accounts Receivable and Contract Rights pertaining to Inventory acquired from Mitel by Nu-Vision Technologies, LLC.

Liens represented by that UCC-1 financing statement, filed on August 8, 2013 in the office of the Tennessee Secretary of State (File #420241194) in favor of Navitas Lease Corp. with respect to certain equipment leased from Navitas by Teldata Corporation.

Liens represented by that UCC-1 financing statement, filed on August 9, 2013 in the office of the Tennessee Secretary of State (File #420251390) in favor of Navitas Lease Corp. with respect to certain equipment leased from Navitas by Teldata Corporation.

Liens represented by the following county tax liens filed in Los Angeles County, CA by the Los Angeles County Tax Collector against Scottel Voice & Data, Inc. Scottel Voice & Data, Inc. is attempting to have the liens released.

Date: February 1, 2012

Date: December 5, 2013

Liens represented by that UCC-1 financing statement, filed on February 28, 2012 in the office of the Minnesota Secretary of State (File #201227374354) in favor of Pioneer Industries, Inc. with respect to certain equipment of Vibes Technologies, Inc.

Liens represented by the following state tax lien filed in Gwinnett County, GA by the Georgia Department of Revenue against Cable Consultants Inc. Cable Consultants Inc. is attempting to have the lien released.

Date: November 25, 2008

Liens represented by that UCC-1 financing statement, filed on April 17, 2006 in the office of the Illinois Secretary of State (File #010863279), assigned to the Secured Party on April 23, 2007 (File #008868422) and continued on April 12, 2011 (File #009104329) in favor of Bank of the West – Equipment Leasing with respect to certain equipment of Nortech Telecommunications Inc.

Liens represented by that UCC-1 financing statement, filed on May 5, 2014 in the office of the Illinois Secretary of State (File #019244954) in favor of Mitel Networks, Inc. with respect to Proceeds, Accounts Receivable and Contract Rights pertaining to Inventory acquired from Mitel by Nortech Telecommunications Inc.