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Requirement title

Functionality

Importance

Notes

1

D8XX_BLF-XML_FR-1

On D8xx IP phones, any PFK (programmable function key - physical or virtual) can be assigned to a function, which allows monitoring state changes of the configured SIP extension on another IP phone. This function shall be called "BLF-XML". The following state changes shall be visualized:

monitored SIP extension is in idle mode => idle
monitored SIP extension seizes a line => busy
monitored SIP extension receives an incoming call => ringing
monitored SIP extension places an outgoing call => busy
monitored SIP extension dials or accepts an incoming call => busy

Must Have

This means, that the D8xx phone acts as a User Agent Client (UAC) and the IP phone of the monitored extension acts as User Agent Server (UAS).

2

D8XX_BLF-XML_FR-2

On Snom IP phones acting as UAS, any SIP extension having an active subscription of its state changes, shall sent a notification SIP message (NOTIFY) to the UAC, at least when one of the following state changes occur:

from any state => idle
from any state => trying
from any state => early
from any state => busy

Must Have

Fully implemented

3

D8XX_BLF-XML_FR-3

The assignment shall be configured either manually via web user interface (WUI) and/or phone user interface (PUI), and automatically via auto-provisioning (HTTP/TFTP setting server), SRAPS, or remote management (TR-069).

Must Have

Fully implemented

4

D8XX_BLF-XML_FR-1-1

On D8xx series, during an active subscription, state changes of the monitored SIP extension shall be visualized on both, PFK LED and PFK label.

Must Have

Fully implemented

5

D8XX_BLF-XML_FR-1-1-1

The PFK LED behaviour and colour shall be according to this table

state	idle	ringing	busy
LED behaviour	off	blinking	on
LED colour	-	red	red

Must Have

Fully implemented

6

D8XX_BLF-XML_FR-1-1-2

The PFK label shall be composed of 3 areas:

(A) icon area	(B) name area
	(C) state area

Must Have

Fully implemented

7

D8XX_BLF-XML_FR-1-1-2-1

The label icon area (A) shall contain the following distinguishable graphical symbol, representing the state

State	idle	ringing	busy
Description	person with a handset	person with a handset plus an arrow (pointing towards the handset)	person with a handset and 2 sound waves (heading away from the handset)
Graphical symbol
Colour	white	red	red

Must Have

Fully implemented

8

D8XX_BLF-XML_FR-1-1-2-2

The label name area (B) shall contain the following text representing the display name or number (configurable) of the monitored / calling party

state	idle	ringing	busy
roles	Monitored party	Calling party > monitored party	Calling party <> monitored party
text	101 or Alex	102 > 101 or Alice > Alex	102 <> 101 or Alice <> Alex
text colour	white	white	white

Must Have

Partly implemented

9

D8XX_BLF-XML_FR-1-1-2-3

The label state area (C) shall contain the following text representing the state

state	idle	ringing	busy
text	idle	ringing	busy
colour	white	white	white

Must Have

Fully implemented

...

User interaction

Protocols

Design reference

UAS

UAC

State

UAS => UAC

UAC

Figma

Screenshot

does nothing

Idle

seizes a line

does nothing

trying

Code Block

language	xml
title	NOTIFY
linenumbers	true
collapse	true

NOTIFY
...
<?xml version="1.0"?>
<dialog-info
	xmlns="urn:ietf:params:xml:ns:dialog-info"
	version="..."
	state="full"
	entity="sip:101@...">
	<dialog id="..." >
		<state>trying</state>
	</dialog>
</dialog-info>

Code Block

language	xml
theme	Confluence
title	XML definition
linenumbers	true
collapse	true

NOTIFY
...
<?xml version="1.0"?>
<dialog-info
	xmlns="urn:ietf:params:xml:ns:dialog-info"
	version="..."
	state="full"
	entity="sip:101@...">
	<dialog id="..." >
		<state>trying</state>
	</dialog>
</dialog-info>

hangs up

does nothing

terminated

Code Block

language	xml
title	NOTIFY
linenumbers	true
collapse	true

NOTIFY
...
<?xml version="1.0"?>
<dialog-info
	xmlns="urn:ietf:params:xml:ns:dialog-info"
	version="..."
	state="full"
	entity="sip:101@192.168.245.1">
	<dialog id="..."
		direction='initiator'
		call-id='...'
		local-tag=""
		remote-tag="">
		<state>terminated</state>
		<local>
			<identity display="B">sip:101@...</identity>
			<target uri="sip:101@...;line=...">
				<param pname="x-line-id" pval="0" />
			</target>
		</local>
	</dialog>
</dialog-info>

incoming call ringing

does nothing

early

Code Block

language	xml
title	NOTIFY
linenumbers	true
collapse	true

NOTIFY
...
<?xml version="1.0"?>
<dialog-info
	xmlns="urn:ietf:params:xml:ns:dialog-info"
	version="..."
	state="full" entity="...">
	<dialog
		id="..."
		direction='recipient'
		call-id='...'
		local-tag="..."
		remote-tag="...">
		<state>early</state>
		<local>
			<identity display="B">
				sip:101@...
			</identity>
			<target uri="sip:101@...;line=...">
				<param pname="x-line-id" pval="0" />
			</target>
		</local>
		<remote>
			<identity display="C">
				sip:102@...
			</identity>
			<target uri="sip:102@..."/>
		</remote>
	</dialog>
</dialog-info>

incoming call accepted

does nothing

confirmed

Code Block

language	xml
title	NOTIFY
linenumbers	true
collapse	true

NOTIFY
...
<?xml version="1.0"?>
<dialog-info
	xmlns="urn:ietf:params:xml:ns:dialog-info"
	version="..."
	state="full"
	entity="sip:101@...">
	<dialog
		id="..."
		direction='recipient'
		call-id='...'
		local-tag="..."
		remote-tag="...">
		<state>confirmed</state>
		<local>
			<identity display="B">sip:101@...</identity>
			<target uri="sip:101@...;line=...">
				<param pname="x-line-id" pval="0" />
				<param pname="+sip.rendering" pval='yes' />
			</target>
		</local>
			<remote>
				<identity display="C">sip:102@...</identity>
				<target uri="sip:102@..."/>
			</remote>
	</dialog>
</dialog-info>

call terminated

does nothing

terminated

Code Block

language	xml
title	NOTIFY
linenumbers	true
collapse	true

NOTIFY
...
<?xml version="1.0"?>
<dialog-info
	xmlns="urn:ietf:params:xml:ns:dialog-info"
	version="8"
	state="full"
	entity="sip:101@192.168.245.1">
	<dialog id="ef358a486677031ad4ecaac68710cef9"
		direction='recipient'
		call-id='b5c0006472bc-8x9sdw8f8qdr'
		local-tag="7196pmgjev"
		remote-tag="nyeqpi7kqy">
		<state>terminated</state>
		<local>
			<identity display="B">sip:101@192.168.245.1</identity>
			<target uri="sip:101@192.168.245.251:60158;line=caioqij3">
				<param pname="x-line-id" pval="0" />
			</target>
		</local>
		<remote>
			<identity display="C">sip:102@192.168.245.1</identity>
			<target uri="sip:102@192.168.245.1"/>
		</remote>
	</dialog>
</dialog-info>

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Below is a list of questions to be addressed as a result of this requirements document:

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