DECT/GAP/CAT-iq Up to 6 handsets | 10–12 h talk time Range up to 300 m |
Cordless Phones DECT
DECT cordless phones (Digital Enhanced Cordless Telecommunications, ETSI EN 300 175) provide wireless mobility in offices and operations without compromising the call quality of landline phones. The GAP protocol (Generic Access Profile) ensures interoperability between handsets and base stations from different manufacturers on the S0 bus. CAT-iq (Cordless Advanced Technology – internet and quality) additionally enables VoIP functions and extended data services over IP. DECT systems in office environments often support multiple handsets (up to 6) on one base and repeater functions (via DECT repeaters) for larger areas. Manufacturers such as Gigaset and Auerswald offer DECT systems specifically designed for PBX integration with ISDN S0 and SIP interfaces. For industrial environments, DECT phones with higher protection class (IP65) and integration in DECT systems for large-scale operations are available (e.g. OpenScape Cordless from Unify). |
Cordless Phones DECT – Technical Background & Applications
DECT cordless phones (Digital Enhanced Cordless Telecommunications, ETSI EN 300 175) provide wireless mobility in offices and operations without compromising the call quality of landline phones. The GAP protocol (Generic Access Profile) ensures interoperability between handsets and base stations from different manufacturers on the S0 bus. CAT-iq (Cordless Advanced Technology – internet and quality) additionally enables VoIP functions and extended data services over IP. DECT systems in office environments often support multiple handsets (up to 6) on one base and repeater functions (via DECT repeaters) for larger areas. Manufacturers such as Gigaset and Auerswald offer DECT systems specifically designed for PBX integration with ISDN S0 and SIP interfaces. For industrial environments, DECT phones with higher protection class (IP65) and integration in DECT systems for large-scale operations are available (e.g. OpenScape Cordless from Unify).
Matching DECT system phones for PBX integration are under DECT System Phones. Telephone systems with DECT interface are listed under Telephone Systems. Corded alternatives: Corded Phones.
Application Areas
| ✓ Business Telephony & Call Centres | ✓ Authorities & Public Institutions |
| ✓ Industrial Environments & Production Halls | ✓ Hotels & Hospitality |
| ✓ Hospitals & Care Facilities | ✓ Data Centres & IT Infrastructure |
Frequently Asked Questions
▶ How large is the range of a DECT phone? DECT operates in the 1.88–1.90 GHz frequency band. Outdoors, the typical range is 300–500 m; indoors depending on building construction (concrete walls, steel beams) 30–60 m per floor. Range can be extended with DECT repeaters. Large-scale operations (warehouses, production) use multi-cell DECT systems with a central DECT controller. |
▶ Can I use a Gigaset handset with an Auerswald base station? Generally yes – provided both devices support the GAP protocol (which is the case for almost all current DECT devices). GAP ensures basic functions (calling, hanging up). Advanced functions (phone book synchronisation, PBX features, speed dial assignment) are usually not available in GAP mode – these require manufacturer-specific protocols (e.g. CAT-iq 2.0). |
▶ What distinguishes a DECT cordless phone from a DECT system phone? A DECT cordless phone (consumer/SOHO) is a standalone device with an integrated base station for direct connection to a phone line/router. A DECT system phone is a handset connected via a professional DECT base station to a PBX and fully utilises its features (transfer, group call, secretary-boss, system phone book). System phones cannot be operated without a compatible PBX. |
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