Notices and Periods of Time
Any notice or other communication that may be or is required to be given by a party under these Rules shall be in writing and shall be delivered by registered postal or courier service or transmitted by facsimile, telex, e-mail or any other means of telecommunication that provide a record of its transmission.
A party’s last-known residence or place of business during the arbitration shall be a valid address for the purpose of any notice or other communication in the absence of any notification of a change to such address by that party to the other parties, the Arbitral Tribunal and the Registrar.
For the purpose of determining the date of commencement of a time limit, a notice or other communication shall be treated as having been received on the day it is delivered or, in the case of telecommunications, transmitted in accordance with Articles 4.1 and 4.2.
For the purpose of determining compliance with a time limit, a notice or other communication shall be treated as having been sent, made or transmitted if it is dispatched in accordance with Articles 4.1 and 4.2 prior to or on the date of the expiration of the time-limit.
Notwithstanding the above, any notice or communication by one party may be addressed to another party in the manner agreed in writing between them or, failing such agreement, according to the practice followed in the course of their previous dealings or in whatever manner ordered by the Arbitral Tribunal.
For the purpose of calculating a period of time under these Rules, such period shall begin to run on the day following the day when a notice or other communication is received. If the last day of such period is an official holiday or a non-business day at the residence or place of business of the addressee, the period is extended until the first business day which follows. Official holidays or non-business days occurring during the running of the period of time are included in calculating that period.
The Arbitral Tribunal may at any time extend (even where the period of time has expired) or abridge any period of time prescribed under these Rules or under the Arbitration Agreement for the conduct of the arbitration, including any notice or communication to be served by one party on any other party.