A link, called an X-Link™ and is placed in a message (SMS, MMS, email etc.) that is sent to a user and displayed on their device (e.g. mobile telephone). When the link is selected by the user, it connects the user's device to a conversion system, enabling the user to speak a reply which is then converted to a text based reply message; the reply message is then sent to the original message sender (and/or another appropriate recipient). This approach enables a text message to be responded to by voice: it is an example of an asymmetric communication. There are many circumstances where this approach is very useful—for example if the message is a SMS and the recipient does not know how to respond using SMS, or is in an environment where it is difficult (perhaps when walking or driving).