Arca Technologies
Tel: 028 90 845700
2 Trench Road, Mallusk, Belfast, Northern Ireland 
BT36 4TY
Arca Technologies manufactures a range of telecoms test and simulation equipment for ISDN, ADSL, VDSL, SHDSL, POTS, Bluetooth, V5. 1, V5. 2 and Frame Relay. For network access customers and service providers, Arca also supplies ISDN multiplexers and ISDN S-bus extenders. [-10]
Acutest Ltd
Tel: 020 7917 2838
Blackwell House, Guildhall Yard, London EC2V 5AE
Consultancy providing specialist testing services (functional, security, usability, automated & performance testing). [-10]