Supported desk phone features

The following table provides the list of features available on certified desk phones. This article does not apply to certified gateways and analog telephone adapters.

Zoom Phone supports secure voice calls for connections between the Zoom Cloud and the Zoom desktop app, mobile app, web browser/app, and supported SIP devices. During call setup, Zoom Phone uses SIP over TLS 1.2 with Advanced Encryption Standard (AES) 256-bit algorithm for these connections. The Zoom desktop app, mobile app, and web browser/appconnections encrypt call media to the Zoom Cloud using SRTP with AES 256-bit encryption algorithm. SIP devices configured with SRTP use AES-128 or AES-256 bit algorithm to encrypt call media for connections to the Zoom Cloud; otherwise, unencrypted RTP is used as a fallback.

Requirements for using supported desk phone features

Note: If you have a provisioned desk phone set up as a common area phone, some desk phone features will be limited.

Cloud Failover

Failover support allows Zoom Phone devices to register automatically to an alternate Zoom Phone data center when the primary data center becomes unavailable through planned or unplanned downtime. During the failover process, the devices may experience a brief service interruption and missed call notifications. Devices will initiate a failback process and return to the primary data center once the service is resumed.

Comparison of supported desk phone features by brand

Feature	Poly	Yealink	Cisco	AudioCodes	Grandstream	Avaya	Mitel
Basic features
Basic calling features Make and receive calls View and delete voicemail Hold/resume calls Set outbound caller ID Note: You must set your outbound caller ID using keys and positions settings in the Zoom web portal. Do not set your outbound caller ID using the phone's interface. Transfer Start three-way call For Grandstream use the *86 DTMF code to access voicemail.	All certified AudioCodes, Avaya, Cisco, Grandstream, Mitel, Poly, and Yealink models
Basic admin features Custom time format and zone Enable or disable phone web admin portal Sync time with NTP server TLS and SRTP	All certified AudioCodes, Avaya, Cisco, Grandstream, Mitel, Poly, and Yealink models
In-call controls
Aim call park (park using line key)		Partial		445HD 450HD C450HD
Audio intercom	✔	✔		✔
Call control from Zoom desktop client	VVX (partial) Edge E	T2 T3 T4 T5 (partial) VP		445HD 450HD C450HD
Companion mode	VVX (partial) Edge E	CP (partial) T2 T3 T4 T5 VP		(pending confirmation)
Call flip (see note)	CCX DECT VVX Edge E	T2 T3 T4 T5 VP		445HD 450HD C450HD
Call forwarding Settings sync with client		T31G, T31P, T31W, T33G, T34W T43U, T44U, T46U, T48U T44W, T53, T53W, T54W, T57W, T58W VP59
Call monitoring (listen, whisper, barge, take over) - see note	VVX (partial) Edge E	CP (partial) T2 T3 T4 T5 VP		445HD 450HD C450HD
Call monitoring for call queues (listen, whisper, barge, take over)	CCX (pending confirmation) VVX(partial) Edge E	Partial		445HD 450HD C450HD
Call monitoring for shared line appearance (listen, whisper, barge, take over)	Edge E	Partial		445HD 450HD C450HD
Call monitoring for shared line groups (listen, whisper, barge, take over, conference barge)	VVX(partial) Edge E (conference barge only)	Partial		445HD 450HD C450HD
Call park (see note)	CCX Edge B, E VVX	CP (partial) T2 T3 T4 T5 VP	✔	445HD 450HD C450HD RX50		✔
Sync in-call status with Zoom desktop client and mobile app	✔	✔	✔
Transfer to voicemail (see note)	✔	✔	with DTMF code	✔	with DTMF code
Additional features
Background image	Partial	Partial	6871 8811 8841 8845 8851 8861 8865	(pending confirmation)			6915 6920 6920w 6930 6930w 6940 6940w 6970
Clear previous user's call history for signed user via hotdesking	Partial	✔	✔				Mitel OpenScape CP series only
Company directory search (search phone users in the account) - see note	Edge B, E VVX CCX DECT Trio	✔	✔	✔	GRP2601 GRP2602 GRP2603 GRP2604 WP810 WP822 WP825
Conference call (see note)	Edge E	CP925 T31G/T31P T31W T33G T34W T43U T44U T44W T46U T48U T53/T53W T54W T57W T58W VP59		C445HD C450HD
Cloud Paging (see note)	Edge E	T31P T31G T33G T43U T44U T44W T46U T48U T58W T53 T54 T57W		C450HD 450HD 445HD
DND (do not disturb) status (see note for limitations)	✔	✔	✔	✔	✔	✔	✔
DND presence status sync	Edge E CCX400 CCX500 CCX505 CCX600 CCX700 VVX150 VVX250 VVX350 VVX450	T31G/T31P T31W T33G T31W T42S T43U T44U T44W T46S/T46U T48S/T48U T53/T53W T54W T56A T57W T58A T58W VP59		445HD 450HD C450HD RX50
Emergency services location reporting	VVX (partial) Edge B, E Trio C60 Trio 8500 Trio 8800	Partial		405HD 445HD C450HD
Group call pickup	VVX (partial) Edge E CCX (pending confirmation)	Partial		445HD 450HD C450HD
Hot desking (see note)	✔	✔	✔	445HD 450HD C450HD		✔	✔
Local survivability	VVX CCX Trio Edge E series	CP920 CP925 T31G T31P T31W T33G T34W T42S T43U T44U T44W T46S T48S T46U T48U T53 T53W T54W T57W T58W W60P W70B W80DM W90DM	6800 series 7800 series 8800 series	405HD 445HD 450HD C450HD RX50 MP-1xx MP-5xx MP-1288(*)
Message waiting indicator for SLG/SLA	✔	✔	✔	✔	✔
Multiple line keys assigned to direct phone numbers (see note)	✔	✔	✔	445HD 450HD C450HD	GRP260x GRP2612, GRP2613, GRP2614, GRP2615, GRP2616 GRP2624, GRP2634, GRP2670		✔
Multiple Line Appearance	Edge E series (partial) VVX (partial) Trio C60 CCX series	T31G, T31P, T31W T33G T34W T43U T44U T44W T46U T48U T53, T53W T54W T57W		445HD 450HD C450HD RX50		J139 J159 J179	✔
Opt in/out of Shared Line Groups from IP Phone	CCX (partial) VVX (partial) Edge E (partial)	CP (partial) T2 T3 T4 T5 VP		445HD 450HD C450HD
Privacy mode	VVX (partial) Poly Edge E	Partial		445HD 450HD C450HD
Set up call forwarding	✔	✔	✔	✔	✔
Screen lock (see note)	VVX CCX Edge E	CP T2 T3 T4 T5 VP
Shared directory of external contacts	✔	✔	✔	✔	260x
Shared lines (Call delegation and shared line groups)	CCX (partial) VVX (partial) Edge E (partial)	CP (partial) T2 T3 T4 T5 VP		445HD 450HD C450HD
Speed dial and busy lamp field	Trio (pending confirmation) VVX (partial) CCX Edge B, E	Partial	✔	Partial	GRP260x GRP2612 GRP2613 GRP2614 GRP2615 GRP2616 GRP2624 GRP2634 GRP2670	✔	✔
Send and receive fax (see the notes for ATA limitations)	OBi30X OBi508			MP1288, MediaPack MP504/508 (formally M500Li) MP1XX	HT8XX ATA
Tap to Hot desk	Edge E
Administration
Assisted provisioning	✔	✔	✔	✔ (see note)	✔	✔ (see note)	✔
Auto firmware upgrade	✔	✔	✔	✔	✔	✔	✔
Custom admin password set in web portal and custom language	✔	✔	✔	Partial	(pending confirmation)		Custom admin password set in web portal: Both Mitel OpenScape CP and 6900 series. Custom language: Mitel OpenScape CP series only.
Custom firmware rule	✔	✔	✔	✔
Custom firmware required		✔		✔
Custom time format and zone	✔	✔	✔	✔	(pending confirmation)		✔
Enable or disable phone web admin portal	✔	✔	✔	✔		✔	✔
Multiple phone users per device (see note)	D230 ATAs ROVE B2, B4	W series	ATA191 ATA192	MP
Provision templates (see note)	✔	✔	✔	✔	✔	✔
Sync time with NTP server	✔	✔	✔	✔	✔	✔	✔
TLS and SRTP	✔	✔	✔	✔	✔	✔	✔
Zero touch provisioning	✔	✔	✔	Partial		✔	✔

Notes for features with partial support

Admin password

The firmware requirements of AudioCodes 445HD, 450HD, C450HD to support admin password:

The Admin Password setting located in the account-level desk phone settings doesn't apply to these models:

Aim call park (park using line key)

Audio intercom

Assisted provisioning

Background image

Cloud Paging

Call control from Zoom desktop client

Call delegation and shared line groups

The following phone models support call delegation and shared line groups. Models not on this list might support some features like making and receiving calls using a shared line, but won’t show the status of shared lines.

Call forwarding Setting sync with client

You can submit a request to Zoom Support to enable this feature for your account.

Call forwarding sync with the Zoom app is supported on these models:
Note: For users with multiple DIDs, enabling the Call forward settings sync with client feature, ensures incoming calls are forwarded. However, for non-primary lines, the forward indicator or destination number won't synchronize on the IP phone. This limitation will be addressed in an enhancement scheduled for early Q2 deployment.

Call flip

Call park

Call monitoring (listen, whisper, barge, take over)

Call monitoring for call queues (listen, whisper, barge, take over)

Call monitoring for shared line appearance (listen, whisper, barge, take over)

Call monitoring for shared line groups (listen, whisper, barge, take over, conference barge)

Clear previous user's call history for signed user via hotdesking

Companion mode

Company directory search

Conference call

Conference call for 3 or more participants with the associated firmware versions is supported on these models:
Note: Zoom Phone multi-party conference calls allow up to 10 participants to join the same phone call simultaneously. Contact Zoom Support to enable this feature for your account.

Custom firmware rules

A custom firmware that includes the vendor, model, and firmware version that can be applied in the firmware management of those devices.

Custom firmware required

Yealink phone models require a custom firmware that is built specifically for Zoom Phone, while certified IP phones from other manufacturers use the firmware that comes from those vendors and isn't specific to Zoom Phone.

Do not disturb (DND) status

Note: A physical or manual reboot of your desk phones is required after enabling the DND feature for the first time.

DND presence status sync

Setting DND on the following certified IP Phones will sync the presence state to your desktop and/or mobile client:

Emergency services location reporting

Group call pickup

Hot desking

Tap to Hot desk

If you're using the Zoom client on your Android or iOS device, you can automatically sign into those devices by using the Tap to Hotdesk feature. This is supported on Android/iOS Zoom client version 5.14.0 or higher.

Local survivability

Message waiting indicator for SLG/SLA

When enabled, IP phones display against the line key of an extension a message waiting indicator to let members of a Shared Line Group or Shared Line Appearance know a message was left on the line.

Multiple Line Appearance

Multiple Line Appearance with separate outbound caller ID is ONLY supported on these models:

Multiple line keys

Multiple phone users per device

You can assign multiple phone users to these models. This feature is also known as
multi-SIP extension registry.

Privacy mode

Provision templates

Quality of Service (QoS)

Set up call forwarding

Screen lock

Note: Screen lock is only supported on desk phones assigned to one phone user. Screen lock is not supported on common area phones and phones with multiple phone users.

Speed dial and busy lamp field

Transfer to voicemail

Zero touch provisioning (ZTP)

For supported features on the Zoom app and Zoom Phone Appliances, see the Zoom Phone client features comparison article.