A method, system, and computer-readable media are provided for converting text-based messages to binary messages when communicating a Voice-Over Internet Protocol call. The method is able to convert unique text-based fields into binary representations in a manner that maintains the global uniqueness of the text-based filed while reducing its size. The method includes identifying a text-based field within a text-based protocol message, such that the text-based field is identified as having to be globally unique; compressing the text-based field into a binary representation using a hashing algorithm, wherein the binary representation is globally unique; and transmitting the binary representation of the text-based field to a recipient.