ECCN reference · Category 5: Telecommunications and information security
ECCN 5A991
Telecommunication equipment, not controlled by 5A001
Systems, equipment and components. Reasons for control: AT (Anti-terrorism).
Does 5A991 need a license to your country?
Enter the full classification (for example 5A991.a) and a destination. The check reads the Country Chart, the end-use and embargo rules, and shows the rule and source behind the answer.
License requirements
Each control below comes from the entry’s License Requirements table. Where it names a Country Chart column, the countries with an X in that column need a license for the items the control covers, unless a License Exception applies.
- AT (Anti-terrorism): AT applies to entire entry. No Country Chart country has an X in column AT1; the destinations this control targets are under “Not decided by the Country Chart” below.
Not decided by the Country Chart: Covered Donetsk region of Ukraine (DNR), Covered Luhansk region of Ukraine (LNR), Crimea region of Ukraine, Cuba, Iran, Korea, North, Syria. These destinations are under embargoes or other special controls in 15 CFR Part 746, which require a license for most items whatever the chart shows. Russia and Belarus also have broad Part 746 controls in addition to the chart.
A blank on the Country Chart is not permission to ship. End-use and end-user rules (15 CFR Part 744), embargoes and sanctions (Part 746), and the parties to the transaction still apply. Use the check above for your item and country.
List-based License Exceptions
As the entry lists them. Each exception has its own conditions in 15 CFR Part 740, and § 740.2 bars or limits most of them for Russia, Belarus, Country Group D:5 and embargoed destinations, so an entry’s “Yes” does not mean it is available everywhere.
- LVS: N/A
- GBS: N/A
Items in 5A991
The controls often apply to some paragraphs only, so check the full paragraph, for example 5A991.a.
Show all 42 paragraphs
- 5A991.a Any type of telecommunications equipment, not controlled by 5A001.a, "specially designed" to operate outside the temperature range from 219 K (−54 °C) to 397 K (124 °C).
- 5A991.b Telecommunication transmission equipment and systems, and "specially designed" "parts," "components" and "accessories" therefor, having any of the following characteristics, functions or features:
- 5A991.b.1 Employing digital techniques, including digital processing of analog signals, and designed to operate at a "digital transfer rate" at the highest multiplex level exceeding 45 Mbit/s or a "total digital transfer rate" exceeding 90 Mbit/s;
- 5A991.b.2 Modems using the "bandwidth of one voice channel" with a "data signaling rate" exceeding 9,600 bits per second;
- 5A991.b.3 Being "stored program controlled" digital cross connect equipment with "digital transfer rate" exceeding 8.5 Mbit/s per port.
- 5A991.b.4 Being equipment containing any of the following:
- 5A991.b.4.a "Network access controllers" and their related common medium having a "digital transfer rate" exceeding 33 Mbit/s; or
- 5A991.b.4.b "Communication channel controllers" with a digital output having a "data signaling rate" exceeding 64,000 bit/s per channel;
- 5A991.b.5 Employing a "laser" and having any of the following characteristics:
- 5A991.b.5.a A transmission wavelength exceeding 1,000 nm; or
- 5A991.b.5.b Employing analog techniques and having a bandwidth exceeding 45 MHz;
- 5A991.b.5.c Employing coherent optical transmission or coherent optical detection techniques (also called optical heterodyne or homodyne techniques);
- 5A991.b.5.d Employing wavelength division multiplexing techniques; or
- 5A991.b.5.e Performing "optical amplification";
- 5A991.b.6 Radio equipment operating at input or output frequencies exceeding:
- 5A991.b.6.a 31 GHz for satellite-earth station applications; or
- 5A991.b.6.b 26.5 GHz for other applications;
- 5A991.b.7 Being radio equipment employing any of the following:
- 5A991.b.7.a Quadrature-amplitude-modulation (QAM) techniques above level 4 if the "total digital transfer rate" exceeds 8.5 Mbit/s;
- 5A991.b.7.b QAM techniques above level 16 if the "total digital transfer rate" is equal to or less than 8.5 Mbit/s;
- 5A991.b.7.c Other digital modulation techniques and having a "spectral efficiency" exceeding 3 bit/s/Hz; or
- 5A991.b.7.d Operating in the 1.5 MHz to 87.5 MHz band and incorporating adaptive techniques providing more than 15 dB suppression of an interfering signal.
- 5A991.c "Stored program controlled" switching equipment and related signaling systems, having any of the following characteristics, functions or features, and "specially designed" "parts," "components" and "accessories" therefor:
- 5A991.c.1 "Data (message) switching" equipment or systems designed for "packet-mode operation" and "parts," electronic assemblies and "components" therefor, n.e.s.
- 5A991.c.3 Routing or switching of "datagram" packets;
- 5A991.c.5 Multi-level priority and pre-emption for circuit switching;
- 5A991.c.6 Designed for automatic hand-off of cellular radio calls to other cellular switches or automatic connection to a centralized subscriber data base common to more than one switch;
- 5A991.c.7 Containing "stored program controlled" digital cross connect equipment with "digital transfer rate" exceeding 8.5 Mbit/s per port.
- 5A991.c.8 "Common channel signaling" operating in either non-associated or quasi-associated mode of operation;
- 5A991.c.9 "Dynamic adaptive routing";
- 5A991.c.10 Being packet switches, circuit switches and routers with ports or lines exceeding any of the following:
- 5A991.c.10.a A "data signaling rate" of 64,000 bit/s per channel for a "communications channel controller"; or
- 5A991.c.10.b A "digital transfer rate" of 33 Mbit/s for a "network access controller" and related common media;
- 5A991.c.11 "Optical switching";
- 5A991.c.12 Employing "Asynchronous Transfer Mode" ("ATM") techniques.
- 5A991.d Optical fibers and optical fiber cables of more than 50 m in length designed for single mode operation;
- 5A991.e Centralized network control having all of the following characteristics:
- 5A991.e.1 Receives data from the nodes; and
- 5A991.e.2 Process these data in order to provide control of traffic not requiring operator decisions, and thereby performing "dynamic adaptive routing";
- 5A991.f Phased array antennas, operating above 10.5 GHz, containing active elements and distributed "parts" or "components," and designed to permit electronic control of beam shaping and pointing, except for landing systems with instruments meeting International Civil Aviation Organization (ICAO) standards (microwave landing systems (MLS)).
- 5A991.g Mobile communications equipment, n.e.s., and "parts," electronic assemblies and "components" therefor; or
- 5A991.h Radio relay communications equipment designed for use at frequencies equal to or exceeding 19.7 GHz and "parts" and "components" therefor, n.e.s.
Source
Commerce Control List, 15 CFR Part 774, Supplement No. 1 (official text on eCFR), as of August 21, 2026, 1:45AM EDT. Commerce Country Chart, Supplement No. 1 to Part 738, as of August 21, 2026, 1:45AM EDT.
This page is a preliminary reference, not legal advice, a classification ruling or permission to ship. Confirm the classification against the full official text.