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ESPA Monitor configuration

Configuration file is organized as ini-style key-value sets split into sections.

There are following special sections:

• [logger]: represents logger

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• configuration
• [rule_*]: any section name starts with rule_ is message parse and action rule
• Pager configuration section may have any name which is not conflicting with special sections listed above.

Section [logger]

• log_level=<level> where level is a number between 1 and 5 describing verbosity of logs
• log_type = file | syslog
• log_file = <path to log file> must be set for log type ‘file’

Section [rule_*]

• Rule name must start from rule_ and have unique name
• Rules evaluated from top to bottom according to pattern best match

If some rule has most common pattern then it should be placed at the bottom of the configuration file.

• pattern = <regex>pattern for message to match. Pattern is POSIX extended regular expression

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• action = call|callscript|skipcall - place a call with set parameters into spool_dir configured in pager
• callscript - call the script with command line parameters
• skip - just skip the message
• callerid = lineCallerID parameter to place into call. May contain variables

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• context = linecontext to place the call into. Default is ‘alarm’

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• extension = lineextension. Default is ’s’. May contain variables

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• channel = lineChannel parameter for call file. May contain variables

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• callscript = <comman>script to call for action script. May contain variables

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• value[name]=<regex> set up values to use in parameters. Name is variable name

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• that can be used as $name in configuration lines like callerid etc.

regex is POSIX extended regular expression over incoming message. 

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There are special variables %alarm%, %message% and %number% that can be used in the configuration.

Pager configuration

Section name may be any but different from special names defined above.

• host=<hostname|ip>IP address or host name to connect
• port=<port>TCP port for connection
• protocol=espa|asciidefine protocol to use. ESPA 4.4.4 or ASCII messages. Default is espa
• no_check_bcc=yes|nowhether check or not checksums for ESPA messages.  For most systems 

set to ‘yes’ to skip BCC checking.

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rules are not going to be validated. 

Configuration example:

Let’s review ESPA Televic system at PBX 172.20.15.64

It may receive messages of following types:

• AP CHAMBRE 12
• AT CHAMBRE 14
• PT CHAMBRE 12
• T AP CHAMBRE 12
• R AP CHAMBRE 12

Messages may have leading or trailing whitespaces. Messages AT and PT should have no action.

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The working configuration is as following:

[logger]

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log_level=3

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log_type=file

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log_file=/var/log/espamonitor.log

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[paging_1]

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host=10.135.0.254

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port=4001

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protocol=espa

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no_check_bcc=yes

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spool_dir=/var/spool/callweaver/outgoing/

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default_rule=rule_skip

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rules=rule_call_ap:rule_call_rt

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selection=bestmatch ;chain|firstmatch

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; message processing rules

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; patterns are POSIX extended RE 

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; action: call|none|path where path is command line with arguments for shell script

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; for ESPA there is special variable %number% exists

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; rules

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[rule_call_ap]

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pattern=^[ ]*AP[ ]+[^ ]+[ ]+[0-9]+[ ]*$

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action=call

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value[room]=^[ ]*[^ ]+[ ]+CHAMBRE[ ]+([0-9]+)[ ]*$

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value[addr]=^[ ]*[^ ]+[ ]+([^ ]{2})[^ ]*[ ]+[0-9]+[ ]*

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value[alarm]=^[ ]*([^ ]+)[ ]+.*$

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callerid='"$alarm $addr" <$room>'

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extension=$alarm

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channel=Local/1234@users

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context=alarm

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[rule_call_rt]

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pattern=^[ ]*(R)|(T)[ ]+[^ ]+[ ]+[^ ]+[ ]+[0-9]+[ ]*$

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action=call

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value[num]=^[ ]*[^ ]+[ ]+[^ ]+[ ]+[^ ]+[ ]+([0-9]+)[ ]*$

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value[addr]=^[ ]*[^ ]+[ ]+[^ ]+[ ]+([^ ]{2})[^ ]*[ ]+[0-9]+[ ]*

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value[alarm]=^[ ]*([^ ]+[ ]+[^ ]+)[ ]+.*$

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callerid='"$alarm $addr" <$room>'

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extension=$alarm

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channel=Local/1234@users

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context=alarm

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[rule_skip]

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action=none

Common configuration for ESPA Televic system. Example for PBX 172.16.35.91:

[logger]

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log_level=3

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log_type=file

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log_file=/var/log/espamonitor.log

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[paging_1]

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host=10.135.0.254

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port=4001

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protocol=espa

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no_check_bcc=yes

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spool_dir=/var/spool/callweaver/outgoing/

...

default_rule=rule_makecall

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; message processing rules

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; patterns are POSIX extended RE 

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; action: call|none|path where path is command line with arguments for shell script

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; for ESPA there are special variables %number% and %message% 

...

;

...

; rules

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[rule_makecall]

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action=call

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callerid=\"%message%\" <%number%>

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value[ext]="^([^ ]{3}).*$/\1

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extension=$ext

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channel=Local/1000@users

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context=alarm

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