Instruction manual

Chapter 3. Application Configuration
3-10 Express 3010/3110 User Manual 61200239L1-20
Flow Control for Asynchronous Data
Press the number corresponding to
Flow Control
and press
Enter
to
display the
Flow Control
options.
Selecting
Hardware Flow Control
allows RX data to be presented to
the DTE interface only when RTS is asserted.
Software Flow
control
uses XON/XOFF to control data transferred between the DTE and the
Express. Selecting
No Flow Ctrl
disables flow control.
SETTING PROTOCOL OPTIONS
The Express communicates with many different types of telecommu-
nication equipment including other Express units, ISDN terminal
adapters, BONDING mode 1-compatible inverse multiplexers, and
PPP-compatible bridges/routers.
Communicating between such diverse types of equipment requires
the use of various rate adaptation protocols to support various bit
rates and DTE settings. The Express supports the following rate adap-
tation protocols:
1. Clear Channel (no rate adaption protocol)
2. Point-to point protocol (PPP) asynchronous to synchronous con-
version
3. BONDING mode 1 (Bandwidth on Demand Interoperability
Group)
4. CCITT V.120
5. CCITT V.110
6. FALLBACK
7. PPP async-sync
The desired protocol may be selected with AT commands at the DTE
port or from the Express built-in menu system. (With the built-in
menu system, view these protocol choices by press the number corre-
sponding to
Protocol
and pressing
Enter
.) A description of protocols
follows.