External Message Type

External Message types

Protocol

The interface to CTMS will be over TCP/IP. The application data will be prefixed by a 2- byte length header field (Binary) indicating the length of the application data to follow.

Bitmap

CTMS supports ASCII ISO bitmap representations. ASCII ISO bitmap representation is either 16 or 32 byte representation of the bitmap in Hex.

Supported Message Type

Message type codes are used to identify the general function of messages, and one Message type code is required in each message. CTMS supports the message types shown in the following table for both inbound and outbound messages. The message types in the table are divided according to the ISO standard message classes.

Message Class	Type	Description
Authorization	0100 & 0110	Authorization Request & Authorization Response
Financial Transaction	0200 & 0210	Financial Transaction Request & Financial Transaction Response
Reversal	0420 ,0421 & 0430	Reversal Advice , Reversal Advice Repeat & Reversal Advice Response
Network Management	0800 & 0810	Network Management Request & Network Management Request Response