Howto:FMC

This article outlines the desirable features of an FMC (Fixed to Mobile Conversion) solution. FMC is a buzz term that refers to the ability to use a standard mobile phone just like a PBX telephone set. Other terms (e.g. Mobile integration) are used though too.

In reality, FMC users mostly have 2 or more phones (a PBX telephone set, a mobile, a soft client, ...), creating need for coordination of all these devices.

The table lists some of the desirable features and shows how various solutions we have looked at perform. Not all of them are mandatory though.

• CFU refers to the trivial implementation (setting a call forwarding unconditional to your mobile)
• poor mans FMC is what can be done today with innovaphone PBX standard features
• VoWLAN means using a standard SIP WLAN / UMTS phone
• Quescom refers to the Quescom FMC Solution
• 2N refers to the 2N FMC solution (not yet tested)

Note that Vierling, Boomering, Counterpath or Optimobile (and probably lots of others) could be added here.

Feature Group	Feature	Description	CFU	poor mans FMC	VoWLAN	Quescom w/ mobile client	Quescom w/o mobile client	2N	Speech Design
one number	all devices of a single PBX user share the same extension
	incoming	user is always called with one extension, free choice of device to answer call	No	Yes	Yes	Yes	Yes		Yes
	outgoing	always the same extension is signaled for outbound calls, regardless of the device the used has chosen to call	No	Yes	Yes	Yes	Yes		Yes
	busy on busy	user is considered busy if any of his devices is busy	No	Yes	Yes	Yes	Yes		Yes
	parallel ringing	all devices are signaled in parallel for incoming calls	No	Yes	Yes	Yes	Yes		Yes
	offset ringing	some devices ring first, others later (e.g. mobile is called only after a few seconds)	No	No (not when parallel ringing is configured)	No (not when parallel ringing is configured)	Yes	Yes
	conditional ringing	some devices ring only if others (e.g. softphone, SIP client) are not registered	Yes	No (not when parallel ringing is configured)	No (not when parallel ringing is configured)	No (not when parallel ringing is configured)	No (not when parallel ringing is configured)		No (not when parallel ringing is configured)
	correct CLI	incoming calls calling party number are correctly shown on all devices (e.g. mobile) if its an internal call (call from the pbx)	No	Yes (on mobile it shows Trunk number+ extension)	Yes	Yes (on mobile it shows Trunk number+ extension)	Yes (on mobile it shows Trunk number+ extension)
	correct CLI	incoming calls calling party number are correctly shown on all devices (e.g. mobile)if its an external call	No	Yes	Yes	Yes	Yes
journal	all devices share the same call journal
	incoming	incoming calls are shown on all devices	No	No	No	No	No
	missed	missed calls are correctly shown (no missed calls if call is taken on another phone)	No	No	No	No	No
	outgoing	outgoing calls are shown on all devices	No	No	No	No	No
	completion	outgoing call completion (no anser, busy, wrong number, ...) is shown correctly	No	No	No	No	No
CTI	CTI works
	busys status	user (not device) busy status is shown correctly	No	Yes	Yes	Yes	Yes		Yes
	presence status	presence status of user is shown correctly	No	No	No	No	No		No
	presence update	presence status can be set by all devices	No	No	No	No	No		No
	place calls	CTI can place/accept/transfer calls on the "active" device
	group functions	CTI can do group pickup / partner groups (e.g. mobile rings, secretary picks call)
basic call	Basic telephony features do work for all devices
	CF*	Set/clear/show call forwarding
	Hold / Retrieve
	3PTY	3 way conference
	Consultation	Consultation call can be done, setting current call on hold
	Transfer
VM	Voice Mail
	MWI	Message waiting indication is shown
	shared box	all devices share the same voice mail box
Supplementary Features
	Park	Calls can be parked from any device and unparked from another (of this user)
	Call Completion	CC on busy, on no response can be requested
	Join	User can join / unjoin a PBX group
	Lock	Lock / unlock phones with PIN
	DND	Set / unset / show do not disturb (internal / external)
	CW	Set / unset / signal call waiting
	CLIR	set / unset / set-next-call CLIR
Directory
	personal	use / maintain personal (not device local) directory from all devices
	enterprise	use shared enterprise directory from all devices
	reverse	resolve incoming number
	display	show display name (sent by caller or from directory) on all devices
VCC	Voice call continuity
	pick from mobile	Voice call can be taken from mobile phone to pbx telephone set
	pick from set	Voice call can be taken from pbx telephone set to mobile phone
	seamless	seamless take over, no putting on hold while taking the call to another device
GSM	GSM gateway functions
	outgoing	mobile phones can be called via GSM gateway
	outgoing CLI	outgoing call to mobile shows correct CLI
	incoming	mobile phone can call in via GSM gateway via 2-stage dialing
	DDI	mobile phone can call in via GSM gateway via DDI, no 2-stage dialing required