AWAN 3883/4/5 Access Server Configuration and Management Manual

Introduction to the AWAN Access Server
AWAN 3883/4/5 Access Server Configuration and Management Manual—424242-001
1-10
AWAN Access Server Limitations
For more information about the SWAN concentrator, refer to the WAN Subsystem
Configuration and Management Manual and SWAN Concentrator Installation and
Support Guide.
AWAN Access Server Limitations
The standard AWAN access server does not support the following features:
•
Host-initiated sessions for terminals. Because of TELNET Server (Telserv)
subsystem limitations, an application cannot send data to a terminal until the
terminal establishes a connection by sending at least one character to the AWAN
access server.
•
Separate monitoring of DSR and DCD input signals.
•
6510 and 6520 terminals in block mode.
•
Support for applications that use the Async Read Continuous (ARC) application
programming interface (API) from CISCORP.
•
Direct application access to printers.
Gateway Access Process (GAP) Product
GAP is a third-party software product available from Gemini Communications, Inc., a
Tandem Alliance Partner. GAP provides additional asynchronous capabilities not
supported by the standard AWAN access server product. These features include the
following:
•
Host-initiated sessions, which are useful for modem control, output-only devices,
and nonstandard devices.
•
Read Continuous, Read Timeout, Write Timeout, true full duplex, and other
advanced features.
•
Support for applications that use the ARC API from CISCORP.
•
Direct control of printers for applications that do not use the Tandem Spooler or
FASTPTCP products.
Supports device type 6,2 Yes No
Provides simple type-ahead No Yes
Supports Asynchronous Read Continuous (ARC)
applications
No Yes
2
1. The TSM workstation can see SNMP trap messages.
2. Requires the Gateway Access Process (GAP) product from Gemini Communications, Inc.
Table 1-1. Comparison of the SWAN Concentrator and AWAN Access
Server (page 2 of 2)
Feature
SWAN
Concentrator
AWAN Access
Server