Telegraph Act, 1885 Rule 91

When an inland telegram cannot be delivered, the telegraph office of destination shall send with the minimum of delay a service advice to the telegraph office of origin standing the cause of non-delivery and the amount of bearing charges, is any, unpaid at destination and payable by the sender. Such advice shall, where possible, be communicated to the sender by the telegraph office of origin : Provided that no advice shall be sent under this rule in respect of a telegram posted under rule 85 and returned undelivered by the post office to the telegraph office which posted it, or in respect of telegrams addressed to await arrival, "post restante". "telegraph restante", "care of telegraph or post office" or "care of station master", except when a charge has to be collected, in which case a service advice of non-delivery shall be sent by post at the expiration of the period prescribed for the retention of such correspondence in rule 93.