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4 Configuration and Operation
20
The following abbreviations are used in the table:
MTP2
Message Transfer Part – Level 2
MTP3
Message Transfer Part – Level 3
ISUP
ISDN User Part
TUP
Telephony User Part
In all cases, the process called ssds (SS7 Software Driver) must be run on
the host computer. This handles message transfer between the host and the
board using the device driver.
To define which protocol modules run on the host, edit the text file
system.txt.
Run the program gctload, which reads the system configuration parameters
from the file system.txt and starts up the selected processes bringing the
system into operation.
For further details of gctload, refer to the Software Environment
Programmer’s Manual.
The following processes for use on the host are included in the distribution.
All must be run on the host with the exception of s7_mgt, s7_log, and
s7_play, which are optional:
Table 8: Host Processes and Utilities
Name Description
gctload Process to initialize the system environment and start up all other related
processes running on the host, deriving the configuration from a text file
(system.txt).
ssds Process to interface with the device driver for passing messages to and from
the board(s) and for downloading software to the board(s).
tick_nt
tick_lnx
tick_sol
Protocol timer process to send periodic “tick” notification to the tim_xxx
process which in turn handles protocol timers.
tim_nt
tim_lnx
tim_sol
Process to receive periodic tick notification from tick_xxx and handle protocol
timers for all other processes.
s7_mgt Process to perform single shot protocol configuration for all protocol modules,
deriving the configuration parameters from a text file (config.txt). This process
is optional. As an alternative to using it, the user may elect to perform
protocol configuration by sending messages directly to the other modules in
the system.
s7_log Utility process to allow messages received from the protocol stack to be
logged to a text file. This is useful for diagnostic purposes.
s7_play Utility process used to generate messages from a text file and send them into
the system.