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| − | = MPC (TouchLine) Data Protocol =
| + | The AlphaCom supports a subset of the MPC data protocol used with the classic Stentofon [[TouchLine]] exchanges. As it allows control of the AlphaCom exchange by mapping MPC commands to AlphaCom commands one-to-one it can be thought of as a variant of the [[Data link layer#Stentofon Simple Link Layer|simple link layer]], but only for single-exchange (not AlphaNet) applications. |
| − | The AlphaCom supports a subset of the MPC data protocol used with the classic Stentofon [[TouchLine]] exchanges. As it allows control of the AlphaCom exchange by mapping MPC commands to AlphaCom commands one-to-one it can be thought of as a variant of the simple link layer, but only for single-exchange (not AlphaNet) applications. | |
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| − | The output is broadcast of exchange events like dialled digits, station busy/free, connection and transfers. Note that it’s possible to send additional data strings from the AlphaCom’s Event Handler on this port also. | + | The output is broadcast of exchange events like dialled digits, station busy/free, connection and transfers. Note that it’s possible to send additional data strings from the AlphaCom’s [[Event Handler]] on this port also. |
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| − | The AlphaCom supports a subset of the MPC Data Protocol for backward compatibility. This allowed some TouchLine generation equipment like [[PNCI]], [[MLH]] and [[CRM]] to be used with the AlphaCom. | + | The AlphaCom supports a subset of the MPC Data Protocol for backward compatibility. This allowed some TouchLine generation equipment like PNCI, MLH and CRMIII/IV to be used with the AlphaCom. |
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| − | == Availability ==
| + | As from software 11.2.3.5 the MPC input commands also support global numbers, i.e. the command will be routed to the correct node. |
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| − | AlphaCom has supported a serial data port which outputs TouchLine formatted output messages since AMC 03.00.
| + | '''See also:''' [[MPC data trace]] |
| − | From software AMC 07.60, a limited subset of TouchLine input commands are supported also.
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| − | == Disclaimer ==
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| − | The TouchLine input commands have been implemented by translating them to existing AlphaCom data protocol commands. This means that the commands may not behave 100% identical compared to a TouchLine exchange in all possible situations. You should think of it as a simple ASCII link layer protocol to AlphaCom functionality.
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| − | == Tips for use ==
| + | [[Category:Protocols]] |
| − | Many AlphaCom features require additional parameters, which can not be supplied when using TouchLine message format. A possible workaround is to use the Event Handling, where you can set up action commands with many parameters.
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| − | * Create a directory number bbbb with feature 85, "Event trigger"
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| − | * In the Event Handler, add an "Event Trigger Feature" event on station aaaa.
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| − | This occurs when bbbb is dialed on station aaaa.
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| − | * Configure the desired action commands for the event. The action can be as complex as you like.
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| − | Now you can use the “H aaaa bbbb” TouchLine command to execute the configured action.
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| − | == Data Port ==
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| − | The physical data port where the TouchLine compatible data appears is programmable using AlphaPro.
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| − | (The default port is Port 1).
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| − | The data port is an EISA RS232C compatible interface.
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| − | The format for data transmission is programmable. The default format is:
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| − | * 9600 baud
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| − | * 7 bits ASCII characters
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| − | * even parity
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| − | * 1 stop bit
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| − | == Protocol Output Format ==
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| − | The protocol format is equal to the format used by the TouchLine Exchange, each data message consists of a variable number of data records consisting of 4 hexadecimal digits (ASCII) each. In addition there are control characters in between:
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| − | <NUL> <head> <SP> <data record> <SP> (<data record> <SP> .....) <CR LF>
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| − | <NUL> ASCII NUL character
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| − | <head> number of records - head inclusive (2 hex digits), message code (2 hex digits)
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| − | <SP> ASCII space
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| − | <data record> Four hexadecimal digits
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| − | <CR LF> ASCII Carriage Return, Line Feed.
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| − | == Message filtering ==
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| − | There is a data filtering system in AlphaCom to prevent that all reportable events in a high traffic situation are reported when it is not necessary. As default all stations in the system belongs to the report group called "[[MONITOR_ST_GROUP]]".
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| − | Not all the supported events are among the subset of events comprising the "MONITOR_ST_GROUP". Through special programming of the AlphaCom, events may be added or taken out of the reporting group (not supported by [[AlphaPro]], use [[TST]]).
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| − | | |
| − | == Additional output messages==
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| − | From AMC 07.60 it’s possible to generate messages on the MPC output port from the Event Handler.
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| − | Use the action $MPC 2 “xxxx xxxx xxxx ” Observe the extra SPACE at the end which is required by some subsystems. The format’s leading NUL and trailing CR/LF are added automatically by the exchange.
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| − | This functionality can be used for several purposes:
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| − | * Generate additional (missing standard) messages
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| − | * Send MPC data to another exchange in AlphaNet
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| − | = TouchLine Output Messages =
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| − | {| border="1"
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| − | ! style="background:#ffdead;" width="170" |Message format
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| − | ! style="background:#ffdead;" width="650" |Description
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| − | |-
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| − | | 0200 aaaa || '''Station becomes Busy'''
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| − | aaaa = Directory number for busy station.
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| − | |-
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| − | | 0201 aaaa || '''Station becomes Free'''
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| − | aaaa = Directory number for free station.
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| − | |-
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| − | |}
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| − | <br>
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| − | <br>
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| − | = TouchLine Input Messages =
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| − | The protocol input format is equal to the format used by the TouchLine Exchange.
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| − | *All characters used in the messages are ASCII characters.
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| − | *The input messages consist of a command character followed by one or more parameters. The termination of the message is a <carriage return> character.
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| − | *The parameters are 4 digits consisting of hexadecimal characters in ASCII representation.
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| − | *Input messages may or may not include spaces between the different records of the protocol.
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| − | Spaces are shown below for clarity only.
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| − | | |
| − | {| border="1"
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| − | ! style="background:#ffdead;" width="170" |Message format
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| − | ! style="background:#ffdead;" width="650" |Description
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| − | |-
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| − | | H aaaa bbbb || '''Station aaaa dials digits bbbb''' in sequence.
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| − | Handled as '''$[[DIAL_DIGITS]] L101 L123''' in AlphaCom.<br>
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| − | Notes:
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| − | *The aaaa station is NOT forced idle before dialing takes place.
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| − | *The H command is NOT able to connect to directory numbers which are hidden by shorter numbers (e.g. it can not reach 4011 hidden by 401).
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| − | *If you send 4 digits to a 3-digit exchange, i.e. dial a station number followed by a digit during connection, we do NOT guarantee that the last digit is handled correctly as it’s received during conversation setup, not conversation itself.
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| − | | I aaaa bbbb || '''Sets up a conversation''' between aaaa and bbbb with '''low priority'''
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| − | Handled as $[[CONN_REQUEST|CONN]] L101 L102 in AlphaCom
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| − | |-
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| − | | J aaaa bbbb || '''Sets up a conversation''' between aaaa and bbbb with '''high priority'''
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| − | Handled as $[[CONN_REQUEST|CONN]] L101 L102 2 2 2 in AlphaCom
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| − | |-
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| − | | Q aaaa || '''aaaa presses C-key'''
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| − | Cancels the call where aaaa is involved.<br> This means that Q-commands in idle will cancel audio program
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| − | |-
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| − | | > aaaa || '''aaaa presses M-key'''
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| − | |-
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| − | | < aaaa || '''aaaa releases M-key'''
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| − | |-
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| − | | - aaaa || '''aaaa goes Off-hook''' (handset off)
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| − | |-
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| − | | _ aaaa || '''aaaa goes On-hook''' (replaces handset)
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| − | |-
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| − | | X xxxx xxxx … || '''Retransmit data'''
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| − | Sends out anything between X and <CR> up to a certain limit included spaces. Each 4th character are followed by a space character. <br>
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| − | Character limit for AMC 07.10 is 61 characters.
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| − | |-
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| − | | ? || AMC '''software version''' is sent out.
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| − | (often used as data line check)
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| − | |-
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| − | |}
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| − | *Illegal commands or commands not supported are discarded without notice or error messages.
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| − | *Parameters that are interpreted as subscriber numbers are tested for validity. Messages with invalid subscriber numbers are discarded without notice. In AlphaCom only digits 0-9 are used in subscriber and feature numbers. Hexadecimal digits A-F are not handled.
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| − | *Leading F`s are legal (and necessary when numbers are less than 4 digits), but discarded.
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| − | *Example: '''H F101 FF84<CR>''' will start a group call.
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| − | [[Category:AlphaCom E Software]] | |
