This register is maintained by the UK Co-ordinator for ITU-T Study Group 16, 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 0010 | 0000 0000 | 23h 00h |
| Network Alchemy Limited | 0010 1010 | 0000 0000 | 2Ah 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 |
| Madge Networks | 0100 1101 | 0000 0000 | 4Dh 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 |
| Codian | 1100 0000 | 0000 0000 | C0h 00h |
Table 3 contains contact information for the manufacturers listed above (where available).
| 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 |