State

The state of the endpoint is examined by requesting the path /state.

This returns a JSON object containing one or more subobjects corresponding to each section requested.

Sections

Specific sections can be requested via the filter parameter. This takes a comma-separated list of section names to examine, or the special value all, which requests all sections. If no filter is provided, then a default set of sections is returned (not necessarily all).

Some examples:

• state
  Fetch default state sections (time, locale, network, endpoint, line, calls, scheduled conferences, audio, video)
• state?filter=line,calls
  Fetch the state sections line and calls.
• state?filter=all
  Fetch all state sections.
• state?filter=all&pretty
  Fetch all state sections, and pretty-print the output to be more human-readable.

Version

The version section returns version information about the endpoint.

Parameter	Data type	Description
version_string	string	String form of the version number.

Time

The time section shows the current time in universal (UNIX / UTC), local (configured timezone) and system (monotonic) clocks. It pushes an update when the minute changes (sufficient for rendering a HH:MM clock).

Parameter	Data type	Description
system_clock	integer	Current system clock time (often seconds since boot).
unix_clock	integer	Current UNIX time (milliseconds since the start of 1970).
date_time	object	Current local time, made up of the following fields:
year	integer	Year.
month	integer	Month of year (one indexed).
day	integer	Day of month (one indexed).
hour	integer	Hours (24-hour).
minute	integer	Minutes
second	integer	Seconds.
dst	boolean	Whether DST is currently in effect.
day_of_week	integer	Day of week (Sunday as zero to Saturday as six).
day_of_year	integer	Day of year (zero indexed).

Line

The line section contains details about the current line.

Parameter	Data type	Description
id	integer	Line ID.
name	string	Display name.
number	string	Number.
uri	string	Global URI.
legacy_uri	string	Global URI usable with legacy H.323 devices.

Calls

The calls section contains details of all calls.

The top level object contains the element list, which is an array of call objects. Each call object has fields:

Parameter	Data type	Description
id	integer	Unique ID of this call (pass as callid to call-related actions).
state	integer	API call state.
call_time	integer	Time since the call was connected, in seconds.
participants	array	If this is a multiparty call, the array of participant details.
recording	integer	The recording state of the call. This is only present for organizations that have recording enabled.
remote_camera_controllable	boolean	Whether the remote / far-end camera is controllable.
can_start_content_sharing	boolean	Whether content can be shared in the call.
can_transfer	boolean	Whether the call can be transferred.
can_add_participant	boolean	Whether a participant can be added to the call.
audio_muted	boolean	Whether the participant’s audio is muted.
can_toggle_audio_mute	boolean	Whether using the action “mute_participant” or “umute_participant” on this participant will currently work.
can_toggle_mute	boolean	Whether using the action “audio_mute” will currently work.
raised_hand_seq	integer	Self raised hand sequence number. 0 if hand is lowered, non-zero if raised. Only present in Spotlight conference calls.
can_raise_or_lower_hand	boolean	Whether you are allowed to raise or lower your own hand using the action “raise_hand” in a Spotlight conference call.
can_participate_in_conference	boolean	Whether a 1-1 call can be escalated into a conference. If true then you must use the action “create_conference” before you can add other people to the conference.
can_lock_unlock_conference	boolean	Whether you have permission to lock or unlock a conference.

Updates are pushed on changes to everything except the call_time field.

Each participant object has fields:

Parameter	Data type	Description
id	integer	Unique ID of this participant(pass as partid to conference-related actions).
state	integer	API participant call state.
name	string	Display name.
number	string	Number (or URI).

Basic call states are as follows:

	Call state	Description
0	INACTIVE	Inactive call (ignore, should never be seen).
1	DIALING	Call is currently dialing, or offhook about to dial.
2	WAITING	Outgoing call is placed and waiting for the far end.
3	RINGING	Incoming call is ringing.
4	IN_CALL	In call.
5	ON_HOLD	On hold, at the near end.
6	ENDED	Call ended.

Recording state of a call is as follows:

	Recording state	Description
0	UNAVAILABLE	Recording is not available for this call (for example, recording is not available for point-to-point calls).
1	DISABLED	This call is not currently being recorded.
2	ENABLED	This call is currently being recorded.

For information about the recording action, refer to the Call action section of Endpoint Control API actions .

Scheduled conferences

The scheduled_conferences section contains details of current and future scheduled conferences. The top level object contains the element list, which is an array of objects:

Parameter	Data type	Description
id	integer	Unique ID (pass as scheduled_conference to action dial).
state	integer	Scheduled conference state.
name	string	Display name.
start_time	integer	Conference start time, as UNIX time (may be in the past).
end_time	integer	Conference end time, as UNIX time.

Scheduled conference states are as follows:

	Schedule conference state	Description
1	NORMAL	The conference has been created, but is not in any of the other states.
2	SOON	The conference can now be called and joined. For example, on the StarLeaf touchscreen controller, the Join Now button displays green.
3	NOW	The conference start time has been reached. For example, on the StarLeaf touchscreen controller, the Join Now button flashes green. On the StarLeaf Phone 2120 and StarLeaf Touch 2020, the message indicator light flashes red. The NOW state continues for five minutes from the start of the conference
4	NOW QUIET	The conference has not reached its end time. For example, on the StarLeaf touchscreen controller, the Join Now button displays green, but does not flash.

Endpoint

The endpoint section details miscellaneous endpoint state.

Parameter	Data type	Description
id	integer	Endpoint ID.
dnd	boolean	Whether Do-Not-Disturb is enabled.
forwarding_availability	integer	Forwarding availability states are listed below.
forwarding_state	integer	Forwarding states are listed below.
forwarding_number	string	Number or URI forwarded to.
missed_calls	integer	Number of missed calls (cleared when recent calls are opened).
message_count	integer	Number of messages that have not been listened to.
standby	boolean	Whether the endpoint is currently in standby. This field is only present where a touchscreen controller is connected to a PT Monitor, PT Mini codec, or a room system codec such as Group Telepresence 3330 or 3351.
serial	string	The serial number of the touchscreen controller.

Forwarding availability value is a bitmask of the following (for example, 3 means that calls could be forwarded to either a mobile number or to another number):

	Forwarding number	Description
0	NONE	Calls cannot be forwarded.
1	MOBILE	Calls can be forwarded to a mobile number.
2	NUMBER	Calls can be forwarded to another number.

Forwarding state values are as follows:

	Forwarding state	Description
0	OFF	Calls are not forwarded.
1	VOICEMAIL	Calls are forwarded to voicemail.
2	MOBILE	Calls are forwarded to a mobile number.
3	NUMBER	Calls are forwarded to another number.

Audio

The audio section details mute state and volume levels.

Parameter	Data type	Description
mute	boolean	Whether audio mute is enabled.
ringer_volume	integer	Volume of the ringer.
adjunct_volume	integer	Volume of the adjunct processing audio.
incall_volume	integer	Volume of the HDMI or line-out audio. This is the volume of whichever audio device is in-use for the call.
can_toggle_mute	boolean	Whether using the action “audio_mute” will currently work.

Video

The video section details mute state, the state of PC sharing, and video settings.

Parameter	Data type	Description
mute	boolean	Whether video mute is enabled.
power_line_frequency	integer	Configured power line frequency, in Hz (50 or 60).
screens	integer	Number of screens attached.
pc_status	integer	PC input status (see below).
active_camera	integer	Index of the currently-active camera.
cameras	array	Array of objects each describing the state of each camera input.
status	integer	Camera input status (see below).
pc_share_status	integer	PC sharing status (see below).
self_view	integer	Self_view display mode status (see below).
conf_layout	string	Name of the current conference layout.
active	boolean	Whether the current camera preset is active.
name	string	Name of the current camera preset.

Video preset status is as follows:

Parameter	Data type	Description
active	boolean	Status of the current camera preset
name	string	Name of the current camera preset

PC or camera input status is as follows:

	Input status	Description
0	DISCONNECTED	Nothing is connected to the input
1	ACTIVE	Input is connected, active and working.
2	ASLEEP	Input is connected, but the source device is asleep or otherwise inactive.
3	INVALID	Input is connected and active, but the video mode being used could not be determined or is not supported.

Self-view display mode status is as follows:

	Input status	Description
0	AUTO	Self view is set to automatic mode.
1	ALWAYS OFF	Self view is set to always off.
2	ALWAYS ON	Self view is set to always on.

PC sharing status is as follows:

	Sharing status	Description
0	PC_SHARE_STATUS_NONE	There is no shared PC.
1	PC_SHARE_STATUS_LOCAL	A PC is shared at the local end of the call.
2	PC_SHARE_STATUS_REMOTE	A PC is shared from the remote end of the call

Favorites

The favorites section details calling and presence details of the first few favorite contacts.

Parameter	Data type	Description
id	integer	Favorite ID (pass as favorite to action dial).
display_name	string	Display name.
type	integer	Number type (see Contacts, under contact number types).
number	string	Number (or URI).
presence	integer	API presence state.

The presence states for favorites is as follows:

	Presence state	Description
0	UNKNOWN	Presence state is unknown.
1	AVAILABLE	The favorite is available.
2	IN CALL	The favorite is currently in a call.
3	DO NOT DISTURB	The favorite has set presence to do not disturb.
4	CALLS FORWARDED	The favorite has forwarded calls.
5	NOT AVAILABLE	The favorite is offline, or the endpoint is not connected.
6	MOBILE	The favorite is a signed in iPad user who is not currently looking at StarLeaf. This user can receive notifications of incoming calls and conferences.

Locale

The locale section contains the current localization settings.

Parameter	Data type	Description
lang	string	Language setting, as IETF language tag.

Network

The network section contains the current IP address and routing settings.

Parameter	Data type	Description
ip	string	IPv4 address of the endpoint.
hostname	string	Hostname of the endpoint.
netmask	string	Netmask of the local IPv4 subnet.
gateway	string	Default gateway for IPv4.
nameserver	string	IPv4 address of the DNS server.

Immediate and delayed state requests

There are two types of state request:

1. State requests that always return immediately with the current state.
2. State requests that delay feedback until the state changes from a particular point in time.

In the response to any state request, within each state section, a counter field can be found. The counter is an integer value, which identifies that particular state snapshot. The counter is incremented whenever any change to the state occurs (Note. there is no maximum value for the counter and it does not return to zero). If you include this counter in a subsequent state request, the codec only returns the state response when the counter has changed. (HTTP: In this case, the HTTP connection is held open until a relevant change occurs, and then the whole state as requested is returned. SERIAL: No response is given until this counter changes, at which point the whole state as requested is returned.)

Note that state can be returned as if changed without any differences being visible in the response (for example the state may change from A to B and back to A), and that some state differences do not result in a response being pushed (for example, the call timer). Additionally, every section has a local counter for that section (the field counter inside that section object), which is incremented when something in that section changes. There is no way for it to be waited-for directly, but it can be used to determine whether any detail in that section has changed between consecutive requests.

Examples:

1. Without the counter field, you immediately receive the response.

For example, request:

{"id":1,"request":{"action":"state","filter":"endpoint"}}

The response is:

{"id":1,"response":{"counter":33170,"endpoint":{"counter":54,"id":406,
"serial":"SLP1409040","dnd":false,"forwarding_availability"
:2,"forwarding_state":0,"missed_calls":0,"message_count"
:0,"standby":true}}}

2. You can use this feature to wait for an incoming call without repeatedly polling the server.
For example, request:

{"id":2,"request":{"action":"state","filter":"calls","counter":33170}}

There may be no immediate response at this point, but when an incoming call arrives, the response is:

{"id":2,"response":{"counter":33173,"calls":{"counter":95,"list":
[{"id":644,"state":3,"call_time":0,"start_time":0,"participants"
:[{"id":643,"state":2,"name":"John Smith","number":"john.smith
@starleaf.com"}]}]}}}

Requesters

Any state request can specify a requester name with the additional string argument requester. When this is made, all previous outstanding requests from the same requester are canceled and return immediately (with an error message). The intent of this feature is to allow purging of old requests from devices that know they will only ever have one outstanding state request but could be restarted for whatever reason.

If requester is not specified, then multiple outstanding requests are allowed. There is a global limit on the total number of state requests (both anonymous and named) against any API instance (currently 32) – if this is exceeded, the oldest request (the one made earliest in time) is canceled and returns an error message to the user.