CMX218 Datasheet, PDF (1/34 Pages) CML Microcircuits – ISDN Data/Telephony Protocol Engine

CMX218
ISDN Data/Telephony
Protocol Engine
D/218/1 October 1999
Features
• Supports Incoming and Outgoing Calls
• Hayes Compatible 'AT' Command Set
• V.120 / PPP Operation
• Supports CTR3 Approval
• Voice and User Data via B-channels
• Full API Available
Advance Information
Applications
• Feature Phones with Data Interfaces
• Pay-Phones and H.320 Video Phones
• PABX Telephones and Data
• EPOS Terminals
• Data Terminal Adapters
• Reference Designs Available
1.1 Brief Description
The CMX218 is an ISDN data and telephony protocol engine which implements the lower level ISDN interface
and communicates with the CMX605 and other standard devices to form a fully integrated ISDN chipset for
both voice and data communications. It puts all the main data processing elements in one device, no ISDN
software has to be written and simple ‘Plug and Play’ design results. The CMX218 supports one voice port,
which can be used to provide ISDN telephony services or a POTS line interface, and one data channel,
capable of operation at 115,200 b/s. It also has a full set of ‘Hayes’ compatible AT command codes on its
asynchronous data interface and keypad-configurable voice telephony services.
The CMX218 is designed to work with the AMD 79C30 S/T bus interface, the Siemens PSB-21525 HDLC
formatter and the CML CMX605 POTS interface circuit, and also comes complete with embedded applications
software. To support the CMX218, CML can also provide licensed reference designs on user request. A
flexible Applications Program Interface (API) allows users to customise the features and operation of their own
design. The CMX218 comes in a compact 80-pin surface mount package.
© 1999 Consumer Microcircuits Limited
© 1999 Chiron Technology Limited