Suppliers' Information Notes are produced to meet BT's regulatory obligations that relate to the publication of Customer Interface information. To this end, BT has agreed with Ofcom that SINs will be used to provide information about its network offerings. This may be the launch of a completely new service, or it may be the addition of new features within an existing service. Withdrawal of services or facilities will also be announced through SINs.

Enquiries relating to these documents should be directed to: sinet.helpdesk@bt.com

Please note that STINs/SINs for services provided by Openreach can be found on the Openreach site. If you have any questions or comments about Openreach SINs, please email Openreach at orsinsfa@openreach.co.uk

 
No. Title Date
57 KiloStream X21 (2400 to 64k) Service Description Sep-23
133 The BT Cardway Service - Service Description Mar-21
158 BT KiloStream n x 64 kbit/s (X.21 and G.703) Service Description Sep-23
218 MegaStream 34, Service Description Sep-22
223 BT MegaStream 1, BT MegaStream 2 and MegaStream 8 Service Description Oct-23
251 Private Circuit Services. Evolving Network Modernisation and its Effect On Analogue Private Circuits Sep-23
254 KiloStream Aggregate Interface Service Description Sep-23
278 Enhanced Information Service for Emergency Calls, Service Description Mar-24
284 BT Red CARE - Service Description and Technical Information for Suppliers Apr-24
289 BT Megastream 155 & BT Megastream Aggregate - Service Description Sep-22
292 BT National MegaStream 45 - Service Description Sep-22
297 BT Featureline Service. Apr-24
320 Serial Digital Video (SDV) and Associated AES/EBU Digital Audio Circuit Service Description Jul-20
323 Switched Serial Digital Video (SDV) and Associated AES/EBU Digital
Audio Circuit - Service Description		 Jul-20
324 FeatureNet Embark Service Description Sep-20
333 SDH Customer Interfaces at the STM-N Level (where N=1,4,16) Interface Characteristics Oct-23
337 BT MegaStream 622, BT MegaStream Aggregate (STM4) -  Service Description Sep-22
346 BT ADSL Interface Description Jul-20
355 BT Analogue Private Circuits: Technical Characteristics Of 2-Wire And 4-Wire Analogue Interfaces Sep-23
359 Relay UK powered by BT – Service Description (formerly Next Generation Text Relay / NGT) Dec-23
367 Characteristics of the BT Network: Electrical Safety and EMC Mar-24
385 IP Connect UK - Service Description Mar-24
396 BT Dense Wave Division Multiplex Wavelength Services, Service Description Jul-20
408 BT Wi-Fi - Service Description May-21
413 Fixed Line SMS Service - Service Description and Interface Specification Jul-20
453 BT Dense Wave Division Multiplex 10G Wavelength Services, Service & Interface Description Jul-20
471 BT Wholesale Broadband Managed Connect (WBMC), Service Description Jul-23
472 BT Wholesale Broadband Connect (WBC) Products, Service Description Jan-23
476 BT Downstream 21CN Ethernet Services, Service Description Apr-24
482 BT IPstream Connect Service Description Sep-20
485 BT IPstream Connect Office, BT IPstream Connect Home, BT IPstream Connect
Max & BT IPstream Connect Max Premium Products, Service Description and Interface Specification		 Sep-20
488 Synchronisation – Recommended Settings for Customer Premises Equipment Mar-24
495 BT Wholesale Broadband Connect Fibre to the Cabinet Service, Service Description Jul-23
496 BT IPstream Connect SID for Authentication, Service & Interface Description Jul-20
497 BT IPstream Connect SID for Accounting, Service & Interface Description Jul-20
502 BT IPstream Connect Session Steering, Service and Interface Description Jul-20
509 BT Wholesale Broadband Connect (WBC) Fibre to the Premise (FTTP), Service & Interface Description Jun-22
513 BT Dense Wave Division Multiplex 40G Wavelength Services, Service & Interface Description Jul-20
516 21CN Optical Solution, Service & Interface Description Mar-22

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