Message Formats - Grouped by Function

See also

• Explanation of message format
• Message Formats (Sortable)

Station Connect Operations

Message	Short name	Message no, Hex	Description
CALL_SETUP	CALL	0x0008	Sets up a conversation between two users
CONN_REQUEST	CONN	0x000A	Sets up a conversation between two users
CONN_REFERENCE		0x000B	Positive response from the exchange to CONN_REQUEST
CONN_REF_ACK		0x000E	The external application acknowledges the CONN_REFERENCE
STATION_BUSY		0x000D	Negative response to CONN_REQUEST
RESOURCE_BUSY		0x003E	Negative response to CONN_REQUEST
NO_ACCESS		0x003F	Negative response to CONN_REQUEST
STATION_DOWN		0x000C	Negative response to CONN_REQUEST
DISCON_ST		0x008E	Disconnect station from ongoing feature
DISC_REQ		0x0011	Conversation established with CONN_REQUEST: The external application disconnects a conversation.
DISC_REQ_ACK		0x0012	Conversation established with CONN_REQUEST: The AlphaCom acknowledges the DISC_REQ message
DISCONNECTED		0x000F	Conversation established with CONN_REQUEST: Conversation was disconnected, e.g. the user pressed C-key
DISCONNECTED_ACK		0x0010	Conversation established with CONN_REQUEST: Acknowledge of the DISCONNECTED message
CALL_STATUS_BC		0x0040	Broadcast message telling the status of a call
CONN_STATUS_BC		0x0041	Broadcast message telling that a connection is established
DISCON_STATUS_BC		0x0042	Broadcast message telling that a connection is disconnected
PARK_INQ_BROKER	INQ	0x0086	Park station from conversation, enter Inquiry call state
UNPARK		0x0087	Unpark station from Inquiry call state station, return to conversation
REQ_TRANSF_CALL	TRFC	0x0088	Transfer call in an Inquiry Call situation.
PAR_RING		0x0098	Add a Parallel Ringer station to a call in ringing state
SET_SIMPLEX	SIMP	0x00A3	Set conversation in simplex
ST_AUDIO_OPT		0x00AB	Control audio options of station in connection.

Station Keyboard & Display emulation

Note that the exchange remembers the M-key state and the handset state forever (it’s not “cleared” e.g. by conversation cancel).

Message	Short name	Message no, Hex	Description
DIAL_DIGITS	DD	0x0050	Simulate digit dialing from a station
DIAL_DAK		0x0094	Dial DAK on a station
PLAY_DAK	PD	0x009C	"Dial sequence" for playback.
SINGLE_DIGIT	DIG	0x0051	Dial one digit on a station
DIGIT_RELEASE	DREL	0x0052	The station has released a digit press
M_KEY	M	0x0054	Order station to press M-key
M_KEY_RELEASE	MREL	0x0055	Order station to release M-key
HANDSET_OFF	HOFF	0x0056	Order station to lift handset
HANDSET_ON	HON	0x0057	Order station to replace handset
R_KEY		0x00A4	R_KEY signal
HS_SIDE		0x00A2	Turn handset sidetone on/off
C_KEY	C	0x0058	Order station to press C-key
DISPLAY_TEXT	DSPL	0x005A	Send text and control characters to a station
DIP_FWD	DIP	0x00A0	Send DIP messages to IP stations
ST_BUSY_BC		0x0036	Broadcast message: Intercom station is busy
ST_FREE_BC		0x0037	Broadcast message: Intercom station is free

Station Features and Status

Message	Short name	Message no, Hex	Description
PROGRAM	PROG	0x0001	Set audio program for single station or a predefined group of stations
PROGRAM_ACK		0x0003	Positive response to PROGRAM
PROGRAM_NAK		0x004D	Negative response to PROGRAM
PROG_CONF	CONF	0x0004	Set Simplex conference for predefined group of stations or a single station
PROG_CONF_ACK		0x0006	Positive response to PROG_CONF
PROG_CONF_NAK		0x004E	Negative response to PROG_CONF
CONF_TALK		0x008B	Set Simplex conference speaker
CONF_TALK_STOP		0x008C	Stop station form feeding Simplex conference
AUDIO_DETECT	VOX	0x0053	Triggers the event Simplex_Conference_Audio
O_DUPL_CONF	ODC	0x006F	Include/exclude a station or a group into/from an Open Duplex Conference
OD_CONF_ENTERED		0x0076	The participant has entered an Open Duplex Conference
OD_CONF_LEAVE		0x0071	The participant has left the Open Duplex Conference
ALARM_MSG	ALRM	0x0007	Set up (or disconnect) an ASVP Alarm message to a single station or a predefined group of stations
ALARM_MSG_ACK		0x0009	Positive response to ALARM_MSG
ST_GROUP_DISCON	SGD	0x0074	Switch off Group Call audio at a station that receives Group Call audio at the moment
SET_CALL_REQ_MODE	SCRM	0x006C	Turn on/off message “your call is registered, please wait”, then ringing/flashing at a station
CALL_TRANSFER	TRF	0x0044	Set or remove call transfer for a station
CALL_TRANSFER_OK		0x0045	Positive response to CALL_TRANSFER
CALL_TRANSFER_NOK		0x0046	Negative response to CALL_TRANSFER
SET_REQ_TRANSF	SCRT	0x002B	Set transfer of Call Request for an intercom station
GET_REQ_TRANSF		0x002C	Get the Call Request Transfer status for an intercom station
REQ_TRANSF		0x002D	Response to the SET_REQ_TRANSF and GET_REQ_TRANSF messages
SET_ABSENCE	SABS	0x0028	Set absence status for an intercom station
GET_ABSENCE	GABS	0x0029	Get absence status for an intercom station
ABSENCE_STATUS		0x002A	Response to SET_ABSENCE and GET_ABSENCE messages
WAKE_UP		0x0047	Register or remove wake­up request
WAKE_UP_ACK		0x0048	Positive response to WAKE_UP
WAKE_UP_NAK		0x0049	Negative response to WAKE_UP
SET_GRP_FILT	GFLT	0x007D	Set group call filter for a station
GROUP_MEMBERSHIP	GRM	0x0081	Set group membership in NVRAM for a station
EXT_FEATURE_BC		0x0043	Broadcast message when a directory number (feature 50) is dialed on a station
SET_STATION_COS	SSC	0x0090	Set COS membership in NVRAM for a station
MODIFY_COS_CONTENTS	MCC	0x0091	Modify feature membership in COS in NVRAM
DTMF_CONN		0x0097	Generate DTMF tone during conversation (Only during conversation with RingMaster)
SVP_ST		0x00AC	Start playback of a message during conversation
TEMP_PROG	TPROG	0x0096	Temporarily "mute" program distribution to a station
VOL		0x009B	Set station volume
HS_SIDE		0x00A2	Turn station handset overhearing ON/OFF
MVO		0x00A8	Mask volume and handset override ON/OFF
VOIP_AUDIO_CONFIG	VAC	0x00AF	Configure the RTP stream station
CONN_2_GROUP	C2G	0x00B0	Connect the audio from a group to the speaker of the group
PA_CMD		0x00AE	Acknowledge and remove IP-ARIO PA failure states.

Station Mail Operations

Message	Short name	Message no, Hex	Description
SEND_MAIL	SM	0x0031	Send a mail message to an intercom station
SEND_TXT_MAIL	STM	0x0032	Send a mail message with free text to an intercom station
SEND_MAIL_ACK		0x0033	Response to the SEND_MAIL and SEND_TEXT_MAIL messages
CANCEL_MAIL	CANM	0x0065	Delete one or more mail/call request/alarm messages queued at a station
SET_MAIL_TIMEOUT	SMT	0x0082	Set the timer of a mail queue entry
COPY_MAIL	CPYM	0x0083	Send a copy of a mail in own queue to a new destination (station or group)
MAILQ_NAVIG		0x008D	Do operation on mail queue, or step current mail in mail queue
DELETE_MAIL	DELM	0x0034	Delete a mail entry in the queue for an intercom station
DELETE_MAIL_ACK		0x0035	Response to the DELETE_MAIL message
GET_FIRST_MAIL		0x002E	Get the first mail entry in the queue for an intercom station
GET_LAST_MAIL		0x0064	Get the last mail entry in the queue for an intercom station
GET_NEXT_MAIL		0x002F	Get the next mail entry in the queue for an intercom station
GET_PREV_MAIL		0x0063	Get the previous mail entry in the queue for an intercom station
GET_THIS_MAIL		0x004A	Get the identified mail entry in the queue for an intercom station
EXT_MAIL		0x0030	Response to the GET_x_MAIL messages
Q_ELEM_ADDED		0x004B	Broadcast message. Reports that a mail message has been added to a station’s mail queue
Q_ELEM_REMOVED		0x004C	Broadcast message. Reports that a mail message has been removed from a station’s mail queue
UPD_MAIL_TIMEOUT		0x009D	Used for Ringing Group to update mail timeout in AlphaNet

General Exchange Control

Message	Short name	Message no, Hex	Description
SET_SYSTEM_TIME	SST	0x0027	Set the internal clock to the given date and time
GET_SYSTEM_TIME	GST	0x0025	Ask a device (AlphaCom) for date and time
SYSTEM_TIME		0x0026	Response to the GET_SYSTEM_TIME and SET_SYSTEM_TIME message
PUT_STRING	PUT	0x0073	Output String to Exchange serial port after adding appropriate framing depending on selected port
LOG_STRING	LOG	0x0075	Output String to System Log
EXECUTE_COMMAND	X	0x004F	Send a command string to the exchange to be executed there
EVENT_REPORT	ER	0x0067	Report an event to the event/action system
SET_TIMER	ST	0x008F	Start or stop a timer
WRITE_USER_DEF_DATA	WUDD	0x008A	Write User Defined Data (UDD)
SET_DIRNO_TXT	SDT	0x0077	Change the display text of a directory number (station or feature)
NAME_EXTENSION		0x0080	Special exchange mode using two line names: Send the second line through AlphaNet
SNV	SNV	0x0095	Update specific system settings (NVRAM) values
SYNC_FLASH		0x00A5	Dump local database to flash file system
STATUS_REPORT		0x0072	Report equipment Presence and Error/OK status
GROUP_MSG	GM	0x00A6	Start SVP message playback to group
GROUP_MSG_STOP	GMS	0x00A7	Stop SVP message playback to group
COMMAND_RESPONSE		0x0066	General response message to messages
ILLEGAL_PARAM		0x0023	Negative response
DPMT_INVALID		0x0000	Reserved value for internal use
CAC		0x00A9	Cancel All Conversations
DUMMY		0xFFFE	Test message: Should be routed, accepted and ignored
SMALL_RESET		0x00BC	Simulates Small Reset sent from ICX-AlphaCom web interface
CHILLY_RESET		0x0039	Simulates Chilly Reset sent from ICX-AlphaCom web interface

Device Control and Status

A device shall not respond to any message before it’s operative except RESET_DEVICE and GET_DEVICE.

Message	Short name	Message no, Hex	Description
RESET_TAKEN	RSTT	0x0038	A device reports that it has done an internal reset
RESET_DEVICE	RESET	0x0039	Reset a device
GET_DEVICE	GDEV	0x003A	Get information from an external device
DEVICE_INFO		0x003B	Response to the GET_DEVICE message
PING		0x003C	Test device: “Are you there?”
PONG		0x003D	Response to the PING message. “Yes, I’m here.”

Remote Control

Message	Short name	Message no, Hex	Description
SET_LOGICAL_RCO	SLRC	0x006B	Set or clear a logical RCO
RCO_CHANGED	RCOC	0x0085	New RCO state reported from the exchange
RCI_CHANGED	RCIC	0x0084	New RCI state reported from the exchange
SET_IPRCO		0x00AD	Set a physical RCO on IP station or IP-ARIO

RIO Protocol

There are a number of messages for RIO control. The message sequences, timing and error procedures are described in a separate document. Note that all inputs or outputs “owned” by the exchange can NOT be controlled in parallel by an external computer. Responses are always returned to the device that controls a pin.

Message	Short name	Message no, Hex	Description
GET_PIN_COUNTS	GPC	0x0013	Query a RIO about number of output and input pins and support for non mandatory features
PIN_COUNTS		0x0014	Response to the GET_PIN_COUNTS message
SET_RCO	SET	0x0018	Turn the given remote control output on
SET_RCO_OK		0x0019	Positive response to the SET_RCO message
SET_RCO_FAILED		0x001A	Negative response to the SET_RCO message
CLEAR_RCO	CLR	0x0015	Turn the given remote control output off
CLEAR_RCO_OK		0x0016	Positive response to the CLEAR_RCO message
CLEAR_RCO_FAILED		0x0017	Negative response to the CLEAR_RCO message
PULSE_RCO	PULS	0x001B	Generate a pulse with the defined length
PULSE_RCO_OK		0x001C	Positive response to the PULSE_RCO message
PULSE_RCO_FAILED		0x0022	Negative response to the PULSE_RCO message
POLL_RCI	POLL	0x001D	Poll the given remote control input once
SCAN_RCI_ONCE	SCAN	0x0020	Scan input until defined condition is met, then report to exchange
SCAN_RCI_ACK		0x0021	Positive response to the SCAN_RCI_ONCE message
RCI_IS_ON		0x001F	Response to the POLL_RCI and SCAN_RCI_ONCE messages, input pin is on
RCI_IS_OFF		0x001E	Response to the POLL_RCI and SCAN_RCI_ONCE messages, input pin is off
SCAN_END_ACK		0x0024	Acknowledgment to the RCI_IS_OFF and RCI_IS_ON messages

AlphaNet

This is messages related to audio control between exchanges.
AlphaNet also uses other messages like station emulation, mails, and system maintenance.

Message	Short name	Message no, Hex	Description
AUDIO_PATH_SETUP		0x8001	Set up audio path between a source node and a destination node (possibly via transit nodes)
AUDIO_CODEC		0x801D	Message sent in the direction of start node, from end node or trans-coding nodes along the path
AUDIO_PATH_OK		0x8002	End to end message: Audio path is ready
AUDIO_LINK_OK		0x8003	Response to AUDIO_PATH_SETUP. Channel number is OK
AUDIO_PATH_STATE		0x801E	SIP Response to AUDIO_PATH_SETUP
STATION_INFO		0x801F	SIP update of number and display text
EC_STATE		0x0093	Update remote node of the Echo Canceler state of station.
AUDIO_LINK_NOT_AVAILABLE		0x8004	Response to AUDIO_PATH_SETUP from next node: Channel not granted
AUDIO_PATH_DISCONNECT		0x8006	Release the end­to­end audio path. Normal disconnect from source or destination
AUDIO_LINK_RELEASE		0x8005	Used to release audio path backwards stepwise from node to node when setup meets busy or faulty link
STATION_LISTEN		0x0061	Message from remote exchange. Set station in listen mode. Shut mic
STATION_CONVERSATION		0x0060	Message from remote exchange. Set station in conversation mode. Stop tone and open mic.
STATION_TRANSFER		0x0062	Message from remote exchange: Transfer of B subscriber.
CHECK_AUDIO_PATH		0x800E	Check of established audio path at regular intervals
AUDIO_PATH_CHECK_OK		0x800F	Positive response to CHECK_AUDIO_PATH
AUDIO_CH_LOOPBACK_REQ		0x8010	Request for loopback audio connection. Used by the Audio Channel Testing process
AUDIO_CH_LOOPBACK_ACK		0x8011	Positive acknowledge of AUDIO_CH_LOOPBACK_REQ
AUDIO_CH_FAULTY		0x8013	Response to AUDIO_CH_LOOPBACK_REQ: Requested channel was faulty
LOOPBACK_IMPOSSIBLE		0x8014	Response to AUDIO_CH_LOOPBACK_REQ
AUDIO_CH_DISCON		0x8012	Disconnect a audio channel after loopback test
AUDIO_CH_TONE_REQ		0x8015	Request a peer exchange to put a 500Hz tone on a audio channel
AUDIO_M_PATH_SETUP		0x8016	Communication in a multi-node network
AUDIO_M_PATH_OK		0x8017	Contains statuses for an AUDIO_M_PATH_SETUP from one or more destination exchanges
AUDIO_M_LINK_OK		0x8019	Per­ hop positive response to AUDIO_M_PATH_SETUP
AUDIO_M_PATH_BACKTRACK		0x8018	AUDIO_M_PATH_SETUP failed
VCP_MEET_REQ		0x0069	Request answer to global group call
BUILD_GLOB_GRP		0x0070	Broadcast message to all exchanges to make them rebuild global group indexes
GLOB_GRP_MEMB		0x006A	A exchange tells which global groups this exchange is member of by broadcasting this to all exchanges
RESET_AUDIO_LINK		0x8000	Reset audio link between nodes. Message not used in current AlphaCom version
CONF_JOIN		0x0078	Exchange wants to join conference, asks root-exchange to setup connection back to sender
CONF_MEMB_CHK		0x0079	Ask whether any neighbor exchange has any ordinary member left in conference
CONF_ORD_MEMB		0x007A	An exchange tells its neighbors that it has ordinary member left in conference
CONF_IS_ROOT		0x007B	Broadcast message. Sender informs that it is root of conference
CONF_NOT_ROOT		0x007C	Broadcast message. Sender informs that it is no longer root of conference
AUDIO_M_FEED_REQ		0x801A	Global Simplex Conference: Some station is pressing the M-key when participating in a conference
AUDIO_M_FEED_STOP		0x801B	Global Simplex Conference: The station is releasing the M-key
AUDIO_PATH_DELAY		0x8007	Set Duplex switch delay
AUDIO_RTP_DTMF_DIGIT		0x8021	Rfc4733 RTP digit event send or receive
AUDIO_RTP_DTMF_SETUP		0x8020	Set up reception of rfc4733 digit events in RTP.

System Maintenance

Message	Short name	Message no, Hex	Description
SET_NODE_NUMBER		0x006D	Change the node number of an exchange
ROUTE_ALPHAPRO_MSG		0x006E	Send AlphaPro message via AlphaNet to/from a remote node
CONSOLE_REQ		0x007E	Log on to system debug console (TST)
CONSOLE_DISC		0x007F	Log off from system debug console (TST)
CFG_UPD		0x00A1	Signal update of configuration tables.

Billing

Message	Short name	Message no, Hex	Description
CDC_STATE		0x009E	Used for Billing AMCD->ABSD
CDC_CMD		0x009F	Used for Billing ABSD->AMCD

Common notes

• Over time, more parameters will be added to existing messages. These parameters are often marked “(optional)”, and the AMC version which introduced them is shown to the right in the explanation of each parameter.

- Note that it’s the exchange that processes the DP message that adds default values when it creates an internal representation of the message. If you send a “short” message to a remote node in AlphaNet, all default fields will be filled in in that exchange. Example: SEND_MAIL without A station name will get the name from the same dir.no in the remote exchange (if existing). See comment under Simple Link Layer.

• In general, NULL is not allowed as NET_OBJ_REF parameter.

It’s described explicitly when it can be used, e.g. to switch call forwarding OFF. Hint: Some DP messages works correctly only if you leave the NET_OBJ_REF parameter out, rather than supplying an explicit NULL field.

• Note that all messages may cause the response message ILLEGAL_PARAM, indicating that the exchange has problems recognizing either the message number, or a parameter value of a message. In these cases the documented response message will NOT be returned.

- ILLEGAL_PARAM refers to the problem parameter using a number from 1 and up. This is the number you will find in to the left of each parameter in the table.

- In AlphaNet, if you get an ILLEGAL_PARAM from a remote node indicating that an optional parameter is required, remember that the AMC versions indicated for optional parameters refers to the receiving node, not the local node generating the message.

• Some messages may seem to have too few parameters. Keep in mind that:

- the network layer header contains node and device address for both a source and a destination

- the reference field is always identical in a “command” and the returned “response”.

• AlphaNet: To control a station in a network you must address the DP message to that station’s node. Messages are in general ONLY routed according to the network layer header. If you send a message to an exchange, and use a node number as part of the (A) Subscriber field which is different from the addressed node, the command will be ignored or cause an error response. The messages which deviates from this rule is documented explicitly!