Section 7(3) of the Arbitration and Conciliation Act provides that the arbitration agreement shall be in writing, which is a mandatory requirement. Section 7(4) states that the arbitration agreement shall be in writing, if it is a document signed by all the parties. But a perusal of clauses (b) and (c) of Section 7(4) would show that a written document which may not be signed by the parties even then it can be arbitration agreement. Section 7(4)(b) provides that an arbitration agreement can be culled out from an exchange of letters, telex, telegrams or other means of telecommunication which provide a record of the agreement. Govind Rubber Limited v. Louis Dreyfus Commodities Asia Private Limited, (2015) 13 SCC 477.