January 18, 2017

The 5-year anniversary of this weblog



Today is the 5-year anniversary of this weblog, so this time we will look back at the main developments and the highlights from the 108 articles that have been published here so far.

The very first posting was on January 18, 2012, and contained a video about the White House Situation Room, providing a nice look at the telecommunications equipment used at the highest level of the US government.



The first header of this weblog from January 2012, showing communications equipment
in the watch center of the US National Counterterrorism Center (NCTC)


Initially, this weblog was called Top Level Telecommunications, as it was the intention to write about the communications equipment used by high-level government and military officials.

This fills a gap, because about crypto equipment for secure communications, there were already some very good websites, like those from Jerry Proc and the Dutch Crypto Museum, while for example the White House Museum and Cryptome provided great photos of the phones used by the US president, but without a more technical description of their functions.

In this way, a range of articles were written about the various phones used by president Obama. Then in October 2012 there was an extensive piece about the most important and exclusive communications link in the world: the Washington-Moscow Hotline. For many people it was an eye-opener that there were actually no red telephones on this hotline.

Besides the phones of the US president, there were articles describing the telephone equipment used by the Israeli prime minister, by the Dutch queen, by the popes, as well as by North-Korean dictator Kim Jong-un.

Also provided were a list of highly secure mobile phones and a solution by General Dynamics to secure high-end commercial smartphones.



The second header of this weblog from October 2013, showing the NSA's National Security
Operations Center (NSOC), with the old name, but also the new domain name


Then, in June 2013, the Snowden-leaks started, which would result in the largest number of highly secret documents about NSA and GCHQ ever published. For this weblog, they provided a unique opportunity to describe the modern ways of intercepting communications as detailed as the methods to protect them and so the focus shifted from Top Level Telecommunications and Communications Security (COMSEC) to Signals Intelligence (SIGINT).

After for example new insights into the PRISM program and slides about other collection programs, it was described that the NSA tool BOUNDLESSINFORMANT only shows metadata and that the screenshots from BOUNDLESSINFORMANT can be misleading, which was eventually confirmed in February 2014 when it came out that the Dutch government tried to hide the truth about metadata collection as shown in the BOUNDLESSINFORMANT charts.

Carefully studying the original NSA documents made clear that they often did not support the stories in the press or the way they were presented by Snowden himself. The NSA presentations and reports made clear that the agency is extremely capable in intercepting communications, but they show no evidence for global mass surveillance in the sense that all our communications are continuously monitored, stored and analysed.

Other examples: in July 2014, Glenn Greenwald came with a last big story that was intended to prove that NSA was spying on ordinary American citizens, but actually the original document shows that it was not NSA, but FBI that monitored 5 Americans. In February 2015 it was reported that NSA and GCHQ had stolen SIM card keys from companies like Gemalto, but this didn't put "billions of cellphones" at risk as this was clearly an operation for tactical military purposes.


This kind of close and critical examination of the Snowden documents became an almost unique feature of this weblog as only very few other people took the time and effort for similar analysis.

Although sometimes controversial, the articles about the Snowden-revelations became highly appreciated by a very wide range of people, which led to a huge increase of readers and also of followers of the twitter-account @electrospaces.

The name Electrospaces was initially chosen for the URL of this weblog (http://electrospaces.blogspot.com) and is derived from Electrospace Systems Inc. (ESI), a former company that manufactured the sophisticated and futuristic looking telephone devices used for the Defense Red Switch Network (DRSN) and therefore also by the US president and the military leadership.



An Electrospace MLP-2 telephone from the early 1980s


With this weblog now being not only about top level telecommunications equipment anymore, and the need for a short name on twitter, the initial name was replaced by Electrospaces.net, which also became the new and easier-to-use domain name. Accordingly the new name was presented on the header of this weblog as of January 2016.


Fans of top level telecommunications equipment were not forgotten, with articles about State Department red phones, the phones of NSA director Alexander, those of US Director of National Intelligence James Clapper, and of the Dutch prime minister. A final comprehensive overview of the presidential communications equipment under Barack Obama combines the information from earlier postings about Obama's phones.


Meanwhile, this weblog provided the first description of NSA's largest cable tapping program: DANCINGOASIS and identified the DRTBOX and the DRT surveillance systems for collection of wireless signals for tactical military purposes. And there was a detailed overview of FAIRVIEW: Collecting foreign intelligence inside the US.

The Snowden documents also revealed an overwhelming number of NSA codewords, internal organizational designators and the SIGADs which denote collection facilities, for which separate lists were compiled here in order to keep track of them - and they are still the most complete ones available.

Other lists contain codewords from GCHQ, CSE and BND and explain the numerous abbreviations and acronyms found in the disclosed documents. For a better understanding of the context, an overview of the complicated US classification system, as well as of NSA's legal authorities was created.



The current header of this weblog from January 2016, still showing the NSA's National
Security Operations Center (NSOC) but now with the new name Electrospaces.net
and the three topics which are covered here.


A range of articles became dedicated to developments in Germany: starting with how secure the Merkel-Phone is and how NSA targeted her mobile phone to an extensive coverage of the hearings of the parliamentary commission that investigates spying by NSA and the cooperation between NSA and BND (twitter hashtag: #NSAUA).

These seemingly endless hearings are transcribed by volunteers of the German digital rights organization Netzpolitik.org, but as they reveal many interesting details that confirm or complement things from the Snowden-documents, it proved to be worthwhile to summarize them here in English too.

Some notable results from these hearings were many interesting details about the joint NSA-BND operation Eikonal, which was recognized as being part of NSA's RAMPART-A program here for the first time, as well as that BND didn't care much about foreign NSA selectors.


In collaboration with the French weblog about intelligence & defence Zone d'Intérêt, articles were published about what if Google was an intelligence agency, followed by analysis of the new intelligence laws in France and the Netherlands, with articles about similar laws of other countries to follow in the future.


Finally, some numbers: the most popular article on this weblog became the one about how Obama's BlackBerry was secured from April 2013 with over 100.000 pageviews. Second is a piece from July 2014 about the new phones aboard Air Force One with was read about 72.000 times. Third comes a detailed description of INCENSER, or how NSA and GCHQ are tapping internet cables which got some 65.000 pageviews. The overall total of pageviews for this weblog is currently almost 2,3 million!




Links
- Met Nerds om Tafel: S01E14 – Geheime Diensten en Edward Snowden met Peter Koop
- Washingtonian: 5 Questions for a Dutch Blogger Who’s Obsessed With the White House’s Phones

January 14, 2017

The presidential communications equipment under Barack Obama

(Updated: April 30, 2023)

Over the past five years, a range of articles on this weblog covered the secure and non-secure phones used by president Barack Obama, whether in the White House, at his Summer residence or aboard Air Force One.

With Donald Trump taking over the US presidency in a few days, it's a good moment to look back and provide a comprehensive overview of the communications equipment during Obama's time in office.

Additional context for this was provided by a background story from the New York Times from April last year, as well as by several other sources, which show an almost complete overhaul of the communication systems of the Obama White House.





Preparations under George W. Bush

For the communications systems used by the president of the United States it was more important to be reliable, than to be up-to-date, and so the equipment often served decades, almost until the moment that there are few officials left who know how to maintain it.

Modernization started under the presidency of George W. Bush, not directly to keep up with the rapid rise of internet communications, but because the existing system failed during the attacks on September 11, 2001. As the 9/11 Commission report says:
"The President told us he was frustrated with the poor communications that morning. He could not reach key officials, including Secretary Rumsfeld, for a period of time. The line to the White House shelter conference room and the Vice President kept cutting off."



Conference room of the Presidential Emergency Operations Center (PEOC). September 11, 2001
In the drawer there's a small version of the Integrated Services Telephone (IST)
(White House photo - click to enlarge)


These failures led to an overhaul of communications systems and the installment of new equipment. Bush' deputy chief of staff Joe Hagin ordered for example the upgrade of the Intel 486 computers, replacement of the slow and cumbersome Lotus Notes e-mail system, and White House staff members started using the first BlackBerries.

From August 2006 to May 2007 the famous Situation Room in the West Wing basement underwent the biggest renovation since this facility was created under the Kennedy administration. It was transformed from one simple conference room with a small office space into a multi-room facility with high tech communications equipment, much like we got used to from fictional movies and tv-series:



Video about the White House Situation Room. December 2009.
(White House video - click to play)


Simultaneously, a new and highly secure telephone system was established that should prevent failures like on 9/11: the Executive Voice over Secure IP-network, which connects the president with all major decision makers, like the secretaries of State, Defense and Homeland Security and the Director of National Intelligence.

For this network, common Cisco 7975 unified IP phones are used, but instead of the bezel or faceplate being standard silver, it's bright yellow, which is the color code for the highest classification level: Top Secret/SCI. The phones themselves have no encryption capability, there are separate network encryptors, probably from General Dynamics' TACLANE familiy.



Obama calls the French president Hollande using the Cisco IP phone with
yellow faceplate for secure communications. Key Largo, Florida, March 8, 2014
(White House photo by Pete Souza - click to enlarge)


Before this new IP-network was installed, the president's secure phone calls went through the Defense Red Switch Network (DRSN), which is the secure telephone network for the entire US military. In 2001, the DRSN was still circuit-switched, but its special multilevel precedence and preemption (MLPP) functionality couldn't prevent the glitches during the September 11 attacks.

The DRSN uses custom-made telephone devices, the latest model being the Integrated Services Telephone 2 (IST-2), which can be used for both secure and non-secure phone calls. Probably because of this combined functionality, president George W. Bush got an IST-2 in the Oval Office and so this was also the phone that Obama found on his desk when he took over the Presidency in January 2009:



A single IST-2 telephone on Obama's desk, March 29, 2009
(White House photo by Pete Souza)


Although it was useful to have just one phone for secure and non-secure calls, the IST-2 was probably a bit too military-looking, and also a special cover plate had to be made to cover the 50 direct line buttons, to prevent visitors from seeing who Obama's primary phone contacts were:


The IST-2 telephone with cover plate. The wooden box with the presidential
seal and the red button is an emergency call device
(click to enlarge)


In March or early April 2011, the single IST-2 on the president's desk was replaced by two more common phone sets:

- A black Avaya/Lucent 8520T, which is for the internal White House telephone network that was installed in 1996 and can be used for all non-secure phone calls.

- A dark gray Cisco 7975G Unified IP Phone with expansion module 7916, which is for the highly secure Executive Voice over Secure IP-network, but instead of the yellow faceplate, the phone in the Oval Office has the standard silver one, probably to make it not stand out too much. Although this phone came on the president's desk under Obama, the system itself was already operational since 2007.



The Cisco 7975, Lucent 8520 and iPad 2 on Obama's desk, July 31, 2011
(White House photo by Pete Souza)


In the Oval Office, this configuration would stay in use until the Summer of 2015. The same telephone sets could be found in the office of the president's personal assistent, which is right next to the Oval Office, as well as in the West Wing offices of other White House staff members who may need secure voice communications:



Obama in the office of his personal assistent, with a black Avaya/Lucent 8520T
for non-secure and the gray IST-2 for secure phone calls, May 24, 2010.
Left of the television there's a smaller Avaya/Lucent 8410D.
(White House photo by Pete Souze)



President Obama bids farewell to his personal secretary Katie Johnson. June 10, 2011.
(Cisco 7975 IP phone for secure and the Avaya/Lucent 8520T for non-secure calls)
(White House photo by Pete Souza - click to enlarge)



The office of Ben Rhodes, deputy national security adviser for strategic communications,
with a black Avaya/Lucent 8520 and the Cisco IP phone with yellow faceplate.
Also note the white file cabinet with KABA MAS high security lock.
(photo: Doug Mills/The New York Times - click to enlarge)


In March 2011, president Obama received an iPad 2 directly from Apple founder Steve Jobs ahead of the commercial release. As of January 31, 2012, this device was used to provide Obanma with portions of the President's Daily Brief (PDB), a summary of the most important intelligence assessments. This electronic way of delivery allows analysts to add video and audio clips and interactive graphics. For security reasons, the wireless connections of the president's iPad are disabled.





New equipment under Barack Obama

Immediately after becoming the 44th president of the United States in January 2009, a problem arose with the BlackBerry that Barack Obama was almost addicted to before he was elected. The president using a BlackBerry was considered a big security risk, as foreign intelligence agencies could easily track the president's movements and intercept his communications.


Secured BlackBerry

Obama definitely wanted to keep his BlackBerry, so the White House Communications Agency (WHCA) and the National Security Agency (NSA) came up with a solution: in cooperation with engineers from BlackBerry manufacturer Research In Motion (RIM) they secured a set of regular BlackBerries with the SecurVoice application.

Somewhere in May or June 2009, this highly secured BlackBerry was delivered to president Obama as well as to a group of up to twenty people with whom he liked to stay in close contact with. This because it's only possible to have secure communications if both ends are using the same encryption method or device.




President Obama using his secured BlackBerry 8900 in the limousine while
traveling to the airport in Jakarta, Indonesia. November 10, 2010.
(White House Photo by Pete Souza - click to enlarge)



As of 2009, the White House Communications Agency (WHCA) started upgrading its Washington Area System network, modernizing six network switches in Washington, transiting secure telephone units to IP-based phones, purchasing 24 secure deployable voice switches, upgrading narrow and wideband satellite systems, and conversing the radio network used for presidential travels to an IP-based system.

As part of the Senior Leadership Communication System (connecting the president, vice president, Congress, secretary of Defense, chairman of the Joint Chiefs, etc.) the WHCA established a nationwide network that would survive a high-altitude electromagnetic pulse (HEMP) from a nuclear blast. This network would consist of fiber-optic rings with redundant connections with HEMP and non-HEMP networks.

For all this, the WHCA asked an extra $ 24.7 million for its 2009 procurement budget, which also included upgrading the Head of State network to an IP-network. This system is used by the president to communicate with foreign leaders, but unfortunately we have no additional information about it, so it's not clear which heads of state are connected to it and whether and how it is secured.



A small room within the White House Situation Room where the president
"can make a head-of-state phonecall from the Situation Room itself"
(screenshot from a White House video)


Cool phones?

Even though Obama inherited a fully modernized Situation Room and a sophisticated IST-2 phone on his desk, and was also provided with a uniquely secured BlackBerry, he still expressed his disappointment of the communications equipment he found in the White House. During a meeting with fundraisers in April 2011, he said:

"I always thought I was gonna have like really cool phones and stuff," and: "We can't get our phones to work." Acting out his exasperation: "Come on, guys. I'm the president of the United States! Where's the fancy buttons and stuff and the big screen comes up? It doesn't happen."


Although this wasn't really the case for the president's own equipment, it did apply to other White House employees. The New York Times reported that West Wing aides were stuck "in a sad and stunning state of technological inferiority: desktop computers from the last decade, black-and-white printers that could not do double-sided copies, aging BlackBerries (no iPhones), weak wireless Internet" and desktop phones from the mid-1990s.

Part of this problem was that responsibility for White House technology has long been divided between four agencies, each with their own chief information officer:
- the National Security Council (NSC)
- the Executive Office of the President (EOP)
- the US Secret Service (USSS)
- the White House Communications Agency (WHCA)
That led to a series of Band-Aid solutions over the years, as one agency or another has attempted piecemeal upgrades to White House gear.



"Composite of several images of the President and his national security team during meetings
in the Situation Room discussing the mission against Osama bin Laden" - May 2011.
On the table we see the Cisco with yellow faceplate and an STE secure phone.
(White House Photo by Pete Souza - click to enlarge)



Even in March 2016, when a full IT modernization had already started (see below), Obama said that the pop-culture depiction of presidential-grade technology and the real world are far apart: movies and TV shows "make it appear as if I’m in the [Situation] room and moving things. [We] have half a finger print and a half an hour later I’m tracking a guy on streets of Istanbul. Doesn’t work that way, no. Sometimes I’m just trying to get a connection."

After all the system upgrades, trying to get a connection should not be a problem anymore. Real-time monitoring of military of intelligence operations may be different, but the White House was eager to show that at least they were capable of doing so during the moments when US Navy SEALS killed Osama bin Laden on May 1, 2011:



President Obama in one of the small conference rooms of the Situation Room,
following the operation against Osama Bin Laden. May 1, 2011.
(White House Photo by Pete Souza - click to enlarge)


In the air

With quite some improvements of the ground-based communications systems, the equipment aboard Air Force One was still lagging behind. For their modernization, an $ 81 million contract was awarded to L-3 Communications in 2009. This included replacing outdated analog systems, providing fixed bandwidth switching and integrated secure/non-secure video teleconferencing.

By August 2012, all the old phone sets from the 1980s had been replaced by the Airborne Executive Phone (AEP), which is able to make both secure and non-secure calls from a single handset. It also provides Multiple Independent Levels of Security (MILS) for digital voice and internet data access.




President Obama talks on the phone aboard Air Force One. April 10, 2014.
The Airborne Executive Phone has the red light on, which means it's a secure call.
(White House Photo by Pete Souza - Click to see the full version)


After the upgrade of the phone system, administration officials still had to sent e-mails over an air-to-ground internet connection that was often no better than dial-up modems from the mid-1990s.

Current White House deputy chief of staff for operations Anita Decker Breckenridge told The New York Times that this wasn't acceptable anymore and that she has since worked with the Air Force to upgrade the president’s plane to broadband speeds: "This is the Oval Office in the sky. Talk about a network that didn’t work."


On the road

The Airborne Executive Phone was also installed in the presidential limousine: in the next picture we can recognize a dark gray version of the device between the seats, underneath the presidential seal. President Obama seems to be using a Motorola RAZR flip-phone, for which there's a cradle right next to the side-window.

Previously, an earlier Motorola clamshell phone was used inside the limousine, which means that there must also be a picocell inside, as the heavily armored vehicle will act as a Faraday cage that blocks wireless signals. In the picture, Obama also has two BlackBerries and his iPad in a cover:



President Obama talks on the phone with Aurora Mayor Steve Hogan during the
motorcade ride to Palm Beach International Airport. July 20, 2012.
(White House Photo - Click to enlarge)


(The WHCA also provides secure and non-secure telephones at every location the president visits while traveling. These phones are slightly different and will be described in a separate article later on)


On vacation

"Presidents don't get vacations, they just get a change of scenery" - so when president Obama was on Summer vacation at the Blue Heron Farm in Chilmark on the island of Martha's Vineyard, the White House Communications Agency (WHCA) would install all the necessary equipment, especially for secure communications.

In the following picture we see Obama during his vacation in August 2011, with on the table two common white Panasonic KX-TS108W office phones, which the WHCA provides for non-secure calls. For highly secure calls, two Cisco 7975G Unified IP Phones with yellow faceplate were installed:

> Read more: Obama on vacation


President Obama monitoring Hurricane Irene with his assistant John Brennan and
some other officials. Martha's Vineyard, Massachusetts, August 26, 2011
(White House photo by Pete Souza - click to enlarge)



The New York Times reported about a situation during Obama's Summer vacation in 2014: when White House aides accompanying the president struggled with their laptops as they tried to revise a presidential statement, they could not get on-the-road tech support from the WHCA because the agency’s staff members were not authorized to log in to computers issued by the Executive Office of the President.



IT modernization

After this incident in Martha's Vineyard, White House deputy chief of staff for operations Anita Breckenridge was determined to finally fix the mess of the presidential communications systems.

By March 2015 she had hired David Recordon, who designed and maintained the office technology for Mark Zuckerberg and the other employees at Facebook, to modernize the White House IT systems. Just 28 years old, he was appointed as the first Director of White House Information Technology. "It was an interesting challenge and world for me" according to Recordon.

For this overhaul, the White House didn't need to request additional money - it was paid out of the existing technology budgets for the various agencies involved. In some cases, money was saved by eliminating duplications: the four agencies involved no longer negotiate their own contracts with cellphone companies and no longer buy duplicate copies of software licenses.



President Obama in his private study in the Treaty Room of the White House. We see two
black Avaya/Lucent 8410 phones, a computer screen and an HP laser printer. March 2009.
(Callie Shell/Aurora Photos - click to enlarge)


New IP phones

After almost 20 years, the old internal White House telephone network with the black Avaya/Lucent telephones was replaced by a new IP-based system with the latest Cisco IP phones from the 8800-series.

These phones have full-color (video)screens, WiFi and Bluetooth connectivity (although likely disabled for security reasons), and speed-dial buttons that can be configured online - for the old desktop phones only few staff members knew how to program them. Many White House aides now carry the most recent iPhones, but Obama still carries his own specially modified BlackBerry.

The new IP phone system seems to have been first rolled out in the White House staff offices in the Eisenhower Executive Office Building (EEOB) right across the street, where the new phones were first seen in this picture from November 2015:



White House staffers in the social media office of the White House
in the Eisenhower Executive Office Building. November 2015
(photo: Stephen Crowley/New York Times - click to enlarge)


Later, the new phones also made their way to the office of Obama's personal secretary, right next to the Oval Office, where they replaced the old Avaya/Lucent Lucent 8520T and now sit next to the older Cisco IP phone for the highly secure Executive Voice over Secure IP-network (here also with the standard silver instead of the yellow faceplate):



Obama presents a birthday cake to his personal secretary Ferial Govashiri,
in her office just outside the Oval Office. August 30, 2016
(White House photo/Pete Souza - click to enlarge)


Strangely enough, this new Cisco IP phone was not yet installed on the president's desk in the Oval Office. There, a much simpler telephone from a different manufacturer had replaced the old big black Lucent 8520 by May 2015. The new Avaya 9608 IP phone is a very common office phone with just an average monochrome display and only a few direct line buttons:



President Obama talks on his phone for secure calls with Secretary of State
John Kerry. In front of it there's the new Avaya 9608, July 13, 2015.
(White House photo by Pete Souza - Click to enlarge)



This Avaya IP phone was also placed underneath the side-table in the seating area of the Oval Office, as can be seen in the following picture. In the seating area there's always the same set of telephones as on the president's desk, but when the president makes a phone call, he usually uses the ones on his desk. The phones in the seating area can then be used by his aides or advisers to listen in to the call.



President Obama and FBI Director James Comey speak to members of
the media in the Oval Office of the White House, June 13, 2016.
(AP Photo/Pablo Martinez Monsivais - click to enlarge)



However, in November 2016, the Avaya phone underneath the side table had been replaced by the more futuristic looking Cisco IP phone from the 8800-series, but on the president's desk there still seems to be the simpler Avaya device.



Jann Wenner visits president Obama in the Oval Office, the day
after the 2016 presidential election, November 9, 2016.
(White House photo/Pete Souza - click to enlarge)

Updates:

A close look at the high-resolution version of a photo from December 24, 2016, shows that also on the president's desk, the Avaya phone has been replaced by what can be recognized as the new Cisco from the 8800-series, with some kind of module on the back.

Meanwhile, readers of this weblog have recognized that the box on the back is because this Cisco 8841 IP Phone has been modified in order to meet Telephone Security Group (TSG) standards, including on-hook security for the headset and speakerphone, in this case by Advanced Programs, Inc. (API). The modified phones can also be recognized by the bright red secure hold button:


On the very last day of the Obama administration, just hours before Donald Trump was inaugurated, all the offices of the White House West Wing were empty, leaving just the new communications equipment:



Empty desks in the White House press offices, with a new Cisco IP phone, a new computer
screen and keyboard with integrated smartcard reader. January 20, 2017.
(photo: David Nakamura/The Washington Post - click to enlarge)


New computers

Besides the new telephone system, director of White House Information Technology David Recordon also installed a new computer network. The New York Times reported that first he tried to map the miles of Ethernet cables and phone wires inside the walls of the White House. His team of technicians eventually discovered and removed 13,000 pounds of abandoned cables that no longer served any purpose.

"They had been installed over the decades by different organizations using different standards, different techniques, from different eras" Recordon said. "They were finding these pipes that just had bundles of cable that had been cut off over the years, no longer used. So we just started pulling it out."

With the wiring fixed, Recordon started replacing the old computers by new ones with fast, solid-state drives and fast processors, as well as installing color printers. The WiFi is now made strong enough to live-stream for example an event on Facebook from the Roosevelt Room. And finally, the White House has started requiring users to log on to their computers with two-factor authentication using a smartcard and a pincode.



An Avocent KVM-switch and a smartcard-reader with a smart ID card
inserted, as seen in Ben Rhodes' White House office
(photo: Doug Mills/The New York Times)


Update:

On April 30, 2023, The Washington Post published 23 out of 900 photographs that were obtained through a Freedom of Information Act request to the Obama Presidential Library. They show the moments inside the White House during the raid in which Osama bin Laden was killed on May 1, 2011:


Obama and his team during the capture of Osama bin Laden, May 1, 2011
(White House photo by Pete Souza - click to enlarge)



Links and sources
- The New York Times: Obama Boosted White House Technology; Trump Sees Risk (Dec. 2016)
- The White House: How the Presidential Transition Works in the Social Media Age (Oct. 2016)
- The New York Times: Technology Upgrades Get White House Out of the 20th Century (Apr. 2016)
- Comparison of Cisco IP phones: Impressions of the 8861 (Aug. 2015)
- Many more pictures at Cryptome: Obama Phones (Jan. 2012)
- NBC News documentary: Inside the Obama White House (2009)
- See also: The White House Museum