Introduction

The HDLC.FRAME Protocol is part of the Advanced Communications Controller (ACC) family of products This manual provides configuration information that is specific to that protocol.

There are differences in the use of the HDLC.FRAME protocol, which depend on the type of physical interface in use. The physical interface types fall into one of two categories. These are "E1/T1" and all other types (for example "RS232" or"X.21"). Throughout this document these categories are referred to as E1/T1 or non-E1/T1.