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Phone:
Within UK:
Phone0800 389 6059

Outside the UK:
Phone+44 (0) 1483 308000
EMAIL:
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MAILING ADDRESS:
Avaya Inc. Headquarters
211 Mt. Airy Road
Basking Ridge, NJ 07920
USA

Avaya House
Cathedral Hill
Guildford, Surrey, GU2 7YL
UK

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