Cordless Advanced Technology—internet and quality (CAT-iq) is a technology initiative from the

Digital Enhanced Cordless Telecommunications Digital enhanced cordless telecommunications (Digital European cordless telecommunications), usually known by the acronym DECT, is a standard primarily used for creating cordless telephone systems. It originated in Europe, where it is the common ...

(DECT) Forum, based on ETSI TS 102 527 New Generation DECT (NG-DECT) European standard series. NG-DECT contains backward compatible extensions to basic DECT GAP (Generic access profile) functionality which allow bases and handsets from different vendors to work together with full feature richness expected from SIP terminals and VoIP gateways. CAT-iq defines several profiles for high quality wideband voice services with multiple lines, as well as low bit-rate data applications.

Profiles

The CAT-iq profiles are split between voice and data service, with the following mandatory features: ; CAT-iq 1.0 "HD Voice" (ETSI TS 102 527-1): Narrow-band (32 kbit/s

G.726 G.726 is an ITU-T ADPCM speech codec standard covering the transmission of voice at rates of 16, 24, 32, and 40 kbit/s. It was introduced to supersede both G.721, which covered ADPCM at 32 kbit/s, and G.723, which described ADPCM for ...

ADPCM) and wideband (64 kbit/s

G.722 G.722 is an ITU-T standard 7 kHz wideband audio codec operating at 48, 56 and 64 kbit/s. It was approved by ITU-T in November 1988. Technology of the codec is based on sub-band ADPCM (SB-ADPCM). The corresponding narrow-band codec based on ...

sub-band ADPCM) audio, calling party line and name identification (

CLIP Clip or CLIP may refer to: Fasteners * Hair clip, a device used to hold hair together or attaching materials such as caps to the hair * Binder clip, a device used for holding thicker materials (such as large volumes of paper) together ** Bulldog ...

, CNAP) ; CAT-iq 2.0 "Multi Line" (ETSI TS 102 527-3): Adds multiple lines, line name/id,

call waiting Call waiting is a telephone service where a subscriber can accept a second incoming telephone call by placing an in-progress call on hold—and may also switch between calls. With some providers it can be combined with additional features such as ...

, call transfer, phonebook, missed calls list, DTMF signalling, hands-free headset, handset locator, synchronisation of call lists, phonebook, and settings ; CAT-iq 2.1 "Green" (ETSI TS 102 527-5): Adds 3-party conference, call intrusion, caller blocking ( CLIR), answering machine control,

SMS Short Message/Messaging Service, commonly abbreviated as SMS, is a text messaging service component of most telephone, Internet and mobile device systems. It uses standardized communication protocols that let mobile devices exchange short text ...

on handsets, power-saving modes for handset and base ; CAT-iq Data (ETSI TS 102 527-4): Light data services and software upgrade over the air (SUOTA). Previously CAT-iq 3.0 "Internet Ready" ; CAT-iq IOT (ETSI TS 102 939): Smart Home connectivity (IOT) using

DECT Ultra Low Energy DECT Ultra Low Energy (DECT ULE) is a wireless communication standard used to design wireless sensor and actuator networks for smart home applications. DECT ULE originated from the DECT and NG-DECT (Cat-iq) technology. DECT ULE devices are used i ...

on base. Previously CAT-iq 4.0 "Intelligent Networking" The CAT-iq profiles require a stricter set of mandatory features than the relevant ETSI NG-DECT standards, which make many advanced features optional. Optional voice codecs include 64 kbit/s

G.711 G.711 is a narrowband audio codec originally designed for use in telephony that provides toll-quality audio at 64 kbit/s. G.711 passes audio signals in the range of 300–3400 Hz and samples them at the rate of 8,000 samples per second ...

μ-law/A-law PCM (narrow band), 32 kbit/s

G.729.1 G.729.1 is an 8-32 kbit/s embedded speech and audio codec providing bitstream interoperability with G.729, G.729 Annex A and G.729 Annex B. Its official name is ''G.729-based embedded variable bit rate codec: An 8-32 kbit/s scalable wideband cod ...

(wideband), 32 kbit/s

MPEG-4 MPEG-4 is a group of international standards for the compression of digital audio and visual data, multimedia systems, and file storage formats. It was originally introduced in late 1998 as a group of audio and video coding formats and related tec ...

ER AAC-LD (wideband), and 64 kbit/s MPEG-4 ER AAC-LD (super-wideband). Within the voice profiles, the revisions are sequential: CAT-iq 1.0 provides basic wideband voice, while CAT-iq 2.0 and 2.1 add new functions which expand and supersede parts of the lower profiles. The Data and IOT profiles can either be considered in isolation for data only devices or as a complementary service to the voice enabled devices.

Interoperability

CAT-iq allows

IP-DECT IP-DECT is a technology used for on-site wireless communications. It uses the DECT air interface for reliable wireless voice and data communication between handsets and base stations and the well established VoIP technology for the corded voice com ...

gateways with integrated NG-DECT base stations operate in full-feature mode with any certified CAT-iq 2.0/2.1 handset, regardless of different vendors and silicon or software protocol stack implementations. The base stations will also work with GAP handsets, though supporting only the basic GAP features. The DECT Forum maintains CAT-iq 2.0 Certification program, which opened in December 2010 for member companies. Certification ensures feature compatibility between devices from different vendors with specific focus on the over-the-air protocol, RF emissions and wideband audio requirements. Certified products are allowed to carry the CAT-iq logo and the HD Voice logo from the

GSM Association The GSM Association (commonly referred to as 'the GSMA' or ''Global System for Mobile Communications'', originally ''Groupe Spécial Mobile'') is an industry organisation that represents the interests of mobile network operators worldwide. More ...

References

Standards

; ETSI TS 102 527. Digital Enhanced Cordless Telecommunications (DECT) New Generation DECT:
ETSI TS 102 527-1 V1.5.1 (2019-08). Part 1: Wideband speech

ETSI TS 102 527-2 V1.1.1 (2007-06). Part 2: Support of transparent IP packet data

ETSI TS 102 527-3 V1.7.1 (2019-08). Part 3: Extended wideband speech services

ETSI TS 102 527-4 V1.3.1 (2015-11). Part 4: Light Data Services; Software Update Over The Air (SUOTA), content downloading and HTTP based applications

ETSI TS 102 527-5 V1.3.1 (2019-08). Part 5: Additional feature set nr. 1 for extended wideband speech services
;Digital Enhanced Cordless Telecommunications (DECT) New Generation DECT
ETSI TS 102 841 V1.5.1 (2014-01). Extended wideband speech services – Profile Test Specification (PTS) and Test Case Library (TCL)

ETSI TS 102 843 V1.1.1 (2014-01). Additional feature set nr.1 for extended wideband speech services; Profile Test Specification (PTS) and Test Case Library (TCL)

ETSI TS 103 158 V1.1.1 (2014-11). Light Data Services – Software Update Over The Air (SUOTA) – Profile Test Specification (PTS) and Test Case Library (TCL)
;Digital Enhanced Cordless Telecommunications (DECT):
ETSI TS 103 634 V1.3.1 (2021-10). Low Complexity Communication Codec plus (LC3plus)

ETSI TS 103 706 V1.1.1 (2022-01). Advanced Audio Profile

ETSI EN 301 649 V2.3.1 (2015-03). DECT Packet Radio Service (DPRS)

ETSI TR 102 570 V1.1.1 (2007-03). Digital Enhanced Cordless Telecommunications (DECT); New Generation DECT; Overview and Requirements

External links

Official CAT-iq website

Official DECT Forum website

Official ETSI website

Official HGI website

Official ITU website
Broadband Mobile telecommunications standards {{Tech-stub

Profiles

Interoperability

See also

References

Standards

External links