Terminal Attachment Services
UL provides a wide range of terminal attachment testing and certification services. These services are available to assist you in successfully bringing your product to market both domestically and internationally.
United States and Canada
UL is a Telecommunications Certification Body for Scope C under the Federal Communications Commission TCB program. In addition, we are an active member of the Telecommunications Industry Association (TIA) TR41.9 Subcommittee (Technical Regulatory Considerations), the TR41.9.1 Working Group (Industry Version of Part 68), and a member of the Administrative Council for Terminal Attachments (jointly sponsored by the TIA and the Alliance for Telecommunications Industry Solutions - ATIS)
| Service | Title |
| TIA/EIA-968 | Analog and Digital interface testing (Formerly FCC Part 68) |
Industry Canada has approved UL as a Testing Facility for telecommunications terminal equipment.
| Service | Title |
CS-03 | Analog and Digital interface testing |
Europe
UL has been designated as a Conformity Assessment Body (CAB) for radio and telecommunications terminal equipment. As a "Notified Body" under the R&TTE Directive, UL can identify and approve the essential radio test suites applicable to a product (ANNEX III) and review and approve a manufacturer's technical construction file demonstrating compliance with the identified essential requirements (ANNEX IV).
UL is a member and participant in the Radio and Telecommunications Terminal Equipment Compliance Association (R&TTE CA).
Digital testing
| Service | Title |
CTR1 | Terminal equipment connected to circuit switched data networks using an X.21 interface |
CTR2 | Terminal equipment connected to packet switched public data networks using an X.25 interface |
CTR3 | ISDN Basic access terminal Layers 1, 2, and 3 ETS 300 047 |
CTR4
| ISDN Primary access terminal Layers 1, 2, 3 ETS 300 046 |
CTR12 | Digital leased line - unstructured 2048 kbit/s |
CTR13 | Digital leased line - structured 2048 kbits/s |
CTR 24 | Digital leased line - structured or unstructured 34 Mbits |
NTR4 | G.703 2048 kbit/s - 75 ohm unbalanced (PD 7024) |
NTR5 | B.703 8448 kbit/s - 75 ohm unbalanced (PD 7025) |
NTR6 | G.703 34368 kbit/s - 75 ohm unbalanced (PD 7026) |
Analog testing
| Service | Title |
CTR15 | Analog leased line - 2 wire (Excluding acoustic requirements) |
CTR17 | Analog leased line - 4 wire (Excluding acoustic) |
CTR21 | PAN European analog interface testing including ATAAB and National notes |
Australia
Australian communications authority (ACA)
| Service | Title |
TS002 | General telecom requirements |
TS004 | Acoustic requirements |
TS006 | Leased line requirements |
TS016 | Digital interfaces (2 Mb/s only) |
Hong Kong
UL has been appointed a recognized testing agency (RTA) under the HKTEC Scheme to conduct evaluation tests of telecommunications equipment against HKTA specifications issued by the Telecommunications Authority (TA). Under this Scheme, the TA will examine the test reports produced by UL as a RTA and issue certificates for the telecommunications equipment.
| Service | Title |
HKTA 2011-2 | Connection of customer premises equipment to PSTN (e.g. modems, telephones) |
HKTA 2014-1 | ISDN Basic Rate Access based upon ITU-T Recommendations - S/T Interface |
HKTA 2015-1 | ISDN Primary Rate Access based upon ITU-T Recommendations at 1544 kbit/s - T1 Interface |
HKTA 2029-01 | Digital leased circuits at data rate of 2048 kbit/s - E1 |
Japan
| Service | Title |
Blue Book | JATE Analog requirements |
Green Book | JATE Digital requirements |
New Zealand
New Zealand Communications Authority
| Service | Title |
PTC 200 | Analog requirements |
Singapore
| Service | Title |
IDA TS Series | Type Approval Specifications for terminal equipment |






