This register is maintained by the UK Manufacturer Code Registrar, Bill Pechey
(bpechey@cix.co.uk).
The procedure for allocation of UK codes is detailed here.
There are four octets used to select non-standard operation in H.221, H.245 and the T.120 series, as shown in Table 1.
| Octet Function | Value (binary) | Value (hex) |
|---|---|---|
| Country Code - first octet | 1011 0100 | B4h |
| Country Code - second octet | 0000 0000 | 00h |
| Manufacturer code - first octet | xxxx xxxx | - |
| Manufacturer code - second octet | yyyy yyyy | - |
The codes allocated to manufacturers are given in Table 2.
| Manufacturer Name | First Octet (binary) | Second Octet (binary) | Hex Equivalent |
|---|---|---|---|
| British Telecommunications | 0000 0000 | 0000 0000 | 00h 00h |
| British Telecommunications | 0000 0001 | 0000 0000 | 01h 00h |
| British Telecommunications | 0000 0010 | 0000 0000 | 02h 00h |
| British Telecommunications | 0000 0011 | 0000 0000 | 03h 00h |
| British Telecommunications | 0000 0100 | 0000 0000 | 04h 00h |
| British Telecommunications | 0000 0101 | 0000 0000 | 05h 00h |
| British Telecommunications | 0000 0110 | 0000 0000 | 06h 00h |
| British Telecommunications | 0000 0111 | 0000 0000 | 07h 00h |
| British Telecommunications | 0000 1000 | 0000 0000 | 08h 00h |
| British Telecommunications | 0000 1001 | 0000 0000 | 09h 00h |
| British Telecommunications | 0000 1010 | 0000 0000 | 0Ah 00h |
| British Telecommunications | 0000 1011 | 0000 0000 | 0Bh 00h |
| British Telecommunications | 0000 1100 | 0000 0000 | 0Ch 00h |
| British Telecommunications | 0000 1101 | 0000 0000 | 0Dh 00h |
| British Telecommunications | 0000 1110 | 0000 0000 | 0Eh 00h |
| British Telecommunications | 0000 1111 | 0000 0000 | 0Fh 00h |
| GPT Video Systems | 0001 0000 | 0000 0000 | 10h 00h |
| GPT Video Systems | 0001 0001 | 0000 0000 | 11h 00h |
| GPT Video Systems | 0001 0010 | 0000 0000 | 12h 00h |
| GPT Video Systems | 0001 0011 | 0000 0000 | 13h 00h |
| GPT Video Systems | 0001 0100 | 0000 0000 | 14h 00h |
| GPT Video Systems | 0001 0101 | 0000 0000 | 15h 00h |
| GPT Video Systems | 0001 0110 | 0000 0000 | 16h 00h |
| GPT Video Systems | 0001 0111 | 0000 0000 | 17h 00h |
| GPT Video Systems | 0001 1000 | 0000 0000 | 18h 00h |
| GPT Video Systems | 0001 1001 | 0000 0000 | 19h 00h |
| GPT Video Systems | 0001 1010 | 0000 0000 | 1Ah 00h |
| GPT Video Systems | 0001 1011 | 0000 0000 | 1Bh 00h |
| GPT Video Systems | 0001 1100 | 0000 0000 | 1Ch 00h |
| GPT Video Systems | 0001 1101 | 0000 0000 | 1Dh 00h |
| GPT Video Systems | 0001 1110 | 0000 0000 | 1Eh 00h |
| GPT Video Systems | 0001 1111 | 0000 0000 | 1Fh 00h |
| Marconi Communications | 0010 0000 | 0000 0000 | 20h 00h |
| Indigo Active Vision Systems | 0010 0001 | 0000 0000 | 21h 00h |
| LiveWorks Limited | 0010 0010 | 0000 0000 | 22h 00h |
| ATL Telecom Limited | 0010 0011 | 0000 0000 | 23h 00h |
| Comtrend Limited | 0010 0100 | 0000 0000 | 24h 00h |
| Network Alchemy Limited | 0010 1010 | 0000 0000 | 2Ah 00h |
| VMCi Limited | 0011 1000 | 0000 0000 | 38h 00h |
| Motion Media Technology | 0100 0010 | 0000 0000 | 42h 00h |
| Data Connection | 0100 0100 | 0000 0000 | 44h 00h |
| Westbay Engineers | 0100 0101 | 0000 0000 | 45h 00h |
| FarSite Communications | 0100 0110 | 0000 0000 | 46h 00h |
| ImageCom | 0100 1001 | 0000 0000 | 49h 00h |
| Starleaf | 0100 1100 | 0000 0000 | 4Ch 00h |
| Madge Networks | 0100 1101 | 0000 0000 | 4Dh 00h |
| V-Nova | 0101 0010 | 0000 0000 | 50h 00h |
| Ridgeway Systems and Software | 0101 0010 | 0000 0000 | 52h 00h |
| SpliceCom | 0101 0011 | 0000 0000 | 53h 00h |
| TeleWare | 0101 0100 | 0000 0000 | 54h 00h |
| Vegastream | 0101 0110 | 0000 0000 | 56h 00h |
| Selex Communications | 0101 1010 | 0000 0000 | 5Ch 00h |
| Westell | 0110 0110 | 0000 0000 | 66h 00h |
| ISDN Communications | 0110 1001 | 0000 0000 | 69h 00h |
| Acano (UK) Limited | 1010 1100 | 0000 0000 | ACh 00h |
| Codian | 1100 0000 | 0000 0000 | C0h 00h |
| Digitalk | 1101 0001 | 0000 0000 | D1h 00h |
Table 3 contains contact information for the manufacturers listed above (where available). Note that some of this data is very old and it may be difficult to contact the right person even if the company still exists.
| Manufacturer | Address | Company No. and Tel. | Contact Name, Tel. and Email |
|---|---|---|---|
| British Telecommunications | BTexact Technologies Bibb Way Ipswich IP1 2EQ |
1800000 +44 20 7356 5000 |
Joe Pointer +44 1473 348424 Joe.Pointer@bt.com |
| GPT Video Systems now Marconi Communications Limited | New Century Park Coventry CV3 1HJ |
703317 +44 24 7656 2000 |
Nick Winch +44 24 7656 2290 Nicholas.Winch@marconicomms.com |
| Motion Media Technology | Motion Media Technology Centre Severn Bridge Aust Bristol BS35 4BL |
2775242 +44 1454 635400 |
John Martin +44 1454 635545 John.Martin@motion-media.com |
| Data Connection | 100 Church Street Enfield EN2 6BQ |
1578918 +44 20 8366 1177 |
Liz Rice +44 20 8366 1177 iasolutions@dataconnection.com |
| ImageCom Ltd. | Cedars Park Cedars Road Maidenhead Berkshire SL6 1RZ |
2798425 +44 1628 688700 |
Norman Shilston +44 1628 688704 n_shilston@imagecom.co.uk |
| Madge Networks | Wexham Springs Framewood Road Wexham Slough SL3 6PJ |
2011579 +44 1753 661000 |
Andrew Draper +44 1753 661000 adraper@madge.com |
| Ridgeway Systems and Software Limited | 66 Suttons Business Park Reading RG6 1AZ |
3390345 +44 118 938 1111 |
S. Davies +44 118 938 1107 SDavies@ridgeway-sys.com |
| Marconi Communications Limited | New Century Park Coventry CV3 1HJ |
703317 +44 24 7656 2000 |
Nick Winch +44 24 7656 2290 Nicholas.Winch@marconicomms.com |
| Indigo Active Vision Systems Limited | The Edinburgh Technopole Bush Loan Edinburgh EH26 0PJ |
SC150401 +44 131 475 7203 |
Colin Caughie +44 131 475 7203 cfc@indigo-avs.com |
| Network Alchemy Limited | 2 Century Court Tolpits Lane Watford WD1 8RS |
3252533 +44 1923 699000 |
Brian Frampton +44 1923 699015 brianf@networkalchemy.co.uk |
| LiveWorks Limited | Stanthill House Dursley Gloucestershire GL11 4PF |
3645141 +44 1453 541 500 |
Phil Cavanagh +44 1453 541 500 phil.cavanagh@liveworks.co.uk |
| SpliceCom Limited | Little Gillion The Green Croxley Green Rickmansworth WD3 3HY |
4165961 +44 1923 716260 |
Brian Frampton +44 1923 716269 brian.frampton@splicecom.com |
| Westell Limited | Ringway House Bell Road Daneshill Basingstoke Hampshire RG24 8FB |
1907195 +44 1256 843311 |
John Wratten +44 1256 792105 john.wratten@westell.co.uk |
| TeleWare PLC | TeleWare House York Road Thirsk North Yorkshire YO7 3BX |
2567914 +44 1845 526830 |
Dr. David Hodgson +44 1845 521027 David.Hodgson@teleware.co.uk |
| ISDN Communications Ltd | The Stable Block Ronans Chavey Down Road Winkfield Row Bracknell RG42 6LY |
2119310 +44 1344 899 000 |
Chris Purvis +44 1344 899 007 info@isdn-comms.co.uk |
| Vegastream Ltd | Berkshire Court Western Road Bracknell RG12 1RE |
3479914 +44 1344 784900 |
Peter Price +44 1344 784914 peter.price@vegastream.com |
| Westbay Engineers Ltd | 11 Langstone Close Crawley West Sussex RH10 7JR |
2394702 +44 1293 888500 |
Tom Howard +44 1293 888500 tom@erlang.com |
| Codian Ltd | 1 Elder Way Langley Business Park Slough SL3 6EP |
04616240 +44 1753 548333 |
David Holloway +44 1753 548333 +44 7966 634341 David@Codian.com |
| ATL Telecom Limited | Cypress Drive St. Mellons Cardiff CF3 0EG |
4335781 +44 29 2050 0700 |
Nick Lewis +44 29 2050 0700 x4218 nick.lewis@atltelecom.com |
| FarSite Communications Limited | Tempus Business Centre 60 Kingsclere Road Basingstoke RG21 6XG |
3477728 +44 1256 330461 |
Andrew Watson +44 1256 330461 andrew.watson@farsite.co.uk |
| Selex Communications Limited | Lambda House Christopher Martin Road Basildon SS14 3EL |
00964533 +44 1268 823400 |
Phil Clark +44 1202 408215 phil.m.clark@selex-comms.com |
| Starleaf Limited | Langwood House 63-81 High Street Rickmansworth WD3 1EQ |
06621599 | Kevin Bernitz +44 7884 266040 Kevin.bernitz@starleaf.com |
| Digitalk Limited | Radian Court Davy Avenue Knowlhill Milton Keynes MK5 8PJ |
03030801 +44 1908 425000 |
Paul Bardell +44 1908 425159 paul.bardell@digitalk.com |
| Comtrend UK Limited | Building 3 Chiswick Park 566 Chiswick High Road Chiswick LONDON W4 5YA |
06425699 +44 845 370 1031 |
Jonathan Lishawa or Marcos Ostman +44 845 370 1031 jonathan.lishawa@comtrend.com marcos.ostman@comtrend.com |
| VMCi Limited | Science & Technology Centre, UoR Earley Gate Whiteknights Road READING RG6 6BZ |
07120866 +44 118 324 1020 |
Steve Davies +44 118 324 1024 Steve.davies@vmci.net |
| Acano (UK) Limited | Parkview 82 Oxford Road Uxbridge UB8 1UX |
07793971 +1 212 659 2283 |
Ian Bartley N/A Ian.bartley@acano.com |
| V-Nova Limited | One Sheldon Square Paddington LONDON W2 6TT |
08121803 020 7046 6270 |
Russell Trafford-Jones 020 7046 6279 services@v-nova.com |