Federal Communications Commission
Washington, D.C. 20554
July 29, 2016
DA 16-867
ET Docket No. 13-49
Mary L. Brown
Sr. Director, Government Affairs
Cisco Systems, Inc.
601 Pennsylvania Ave NW
9th floor North
Washington DC 20005
Dear Ms. Brown: 
The Office of Engineering and Technology (OET) is granting the request of Cisco Systems, Inc. (Cisco) 
for a short extension of the deadline to submit prototype devices operating in the 5.850-5.925 GHz band 
that demonstrate sharing techniques.
In your letter filed July 27, 2016, you state that Cisco continues to “develop and evolve its proposal to 
attempt to find the optimum way in which IEEE 802.11ac radios could share with [Dedicated Short 
Range Communication (DSRC)] radios without causing harmful interference to DSRC....”1 Further, you 
state that due to prototype production timelines and previously-scheduled business travel of Cisco staff 
overseeing the prototype testing, you request a short extension of the submission deadline, from July 30, 
2016 to August 18, 2016, to complete the necessary work on the devices.2
In the Public Notice seeking to update and refresh the record in the Unlicensed National Information 
Infrastructure (U-NII) devices in the 5 GHz proceeding, the Commission set a July 30, 2016 deadline by 
which parties are to submit prototype, unlicensed, interference-avoiding devices to the Commission for 
testing of potential sharing solutions between proposed U-NII devices and DSRC operations in the 5.850-
5.925 GHz band.3 The Commission also delegated authority to OET to grant extensions of the deadline 
for good cause shown. Specifically, the Public Notice states, “[g]iven the importance of this item, parties 
should explain in detail in any waiver or extension request why such request should be granted.”4
We find that the information you provide in your letter, along with the request for a short extension of the 
relevant deadline, satisfies the requirement the Commission outlined in the Public Notice for OET to act 
on your extension request, and we conclude that granting your request is in the public interest. 
Accordingly, pursuant to the delegated authority in Sections 0.31 and 0.241 of the Commission rules, 47 
  
1 Letter from Mary L. Brown, Cisco Systems, Inc., to Julius Knapp, Chief, Office of Engineering and Technology at 
1 (July 27, 2016) (on file in ET Docket No. 13-49). 
2 Id. at 1-2.
3 The Commission Seeks to Update and Refresh the Record in the “Unlicensed National Information Infrastructure 
(U-NII) Devices in the 5 GHz Band” Proceeding, ET Docket No. 13-49, Public Notice, 31 FCC Rcd 6130, 6138 
(2016) (Public Notice).
4 Id.
Mary L. Brown
July 29, 2016
Page 2
CFR §§ 0.31, 0.241, we extend the deadline until August 18, 2016 for Cisco Systems Inc. to submit to the 
Commission prototype devices demonstrating sharing techniques operating in the 5.850-5.925 GHz band.
Sincerely,
Julius P. Knapp
Chief
Office of Engineering and Technology