Zoom Knowledge Article

The table below provides the list of supported phone devices for Zoom Phone. You can also see a list of supported features. Before you add devices to Zoom Phone, see an overview of the provisioning process.

Prerequisites to using Zoom Phone Certified Hardware

Encryption

Zoom Phone supports secure voice calls for connections between the Zoom Cloud and the Zoom desktop client, mobile app, web browser/client, 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 client, mobile app, and web browser/client connections 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.

Desk phones

Zoom Phone Appliances

AudioCodes

Model name	Call media (SRTP)	Firmware supported	Firmware date	Mutual TLS with AES-256 encryption	ZTP	EOL
405HD	AES-128	2.2.16.689	4/14/2024	✔	✔
445HD	AES-128 (default) AES-256 (optional)	3.4.10.94.1 generic SIP	5/19/2024	✔	✔
450HD* (Also see notes above)	AES-128	3.4.10.94.1 generic SIP	5/19/2024	✔	✔	✔
C450HD	AES-128 (default) AES-256 (optional)	3.4.10.94.1 generic SIP	5/19/2024	✔	✔
RX50 Conference Phone	AES-128 (default) AES-256 (optional)	3.4.10.94.1	5/19/2024	✔	✔

Avaya

Note: The assisted provisioning using the Zoom provisioning URL is not available for Avaya J100 series, so you must use the enrollment code.

Model name	Call media (SRTP)	Firmware supported	Firmware date	Mutual TLS with AES-256 encryption	ZTP
J139	AES-128	4.1.3.0.6	NA	✔	✔
J159	AES-128	4.1.3.0.6	NA	✔	✔
J179	AES-128	4.1.3.0.6	NA	✔	✔
J189	AES-128	4.1.3.0.6	NA	✔	✔

Cisco

Notes:

Only Cisco multi-platform (MPP) phones are supported by Zoom Phone. This is indicated by 3PCC, 3PC, or 3PW after the model number.
Please carefully review Cisco's documentation for compatible models and firmware conversion from Enterprise to MPP to ensure that the devices are compatible with the required firmware and services.

Model name	Call media (SRTP)	Firmware supported	Firmware date	Mutual TLS with AES-256 encryption	ZTP
6821 (multi-platform versions)	AES-128 (default) AES-256 (optional)	12.0(5)	9/15/2024	✔	✔
6851 (multi-platform versions)	AES-128 (default) AES-256 (optional)	12.0(5)	9/15/2024	✔	✔
6861 (multi-platform versions)	AES-128 (default) AES-256 (optional)	12.0(5)	9/15/2024	✔	✔
6871 (multi-platform versions)	AES-128 (default) AES-256 (optional)	12.0(5)	9/15/2024	✔	✔
7811 (multi-platform versions)	AES-128 (default) AES-256 (optional)	12.0(5)	9/15/2024	✔	✔
7821 (multi-platform versions)	AES-128 (default) AES-256 (optional)	12.0(5)	9/15/2024	✔	✔
7841 (multi-platform versions)	AES-128 (default) AES-256 (optional)	12.0(5)	9/15/2024	✔	✔
7832 (multi-platform versions)	AES-128 (default) AES-256 (optional)	12.0(5)	9/15/2024	✔	✔
7861 (multi-platform versions)	AES-128 (default) AES-256 (optional)	12.0(5)	9/15/2024	✔	✔
8811 (multi-platform versions)	AES-128 (default) AES-256 (optional)	12.0(5)	9/15/2024	✔	✔
8832 (multi-platform versions)	AES-128 (default) AES-256 (optional)	12.0(5)	9/15/2024	✔	✔
8841 (multi-platform versions)	AES-128 (default) AES-256 (optional)	12.0(5)	9/15/2024	✔	✔
8851 (multi-platform versions)	AES-128 (default) AES-256 (optional)	12.0(5)	9/15/2024	✔	✔
8861 (multi-platform versions)	AES-128 (default) AES-256 (optional)	12.0(5)	9/15/2024	✔	✔
8845 (multi-platform versions)	AES-128 (default) AES-256 (optional)	12.0(5)	9/15/2024	✔	✔
8865 (multi-platform versions)	AES-128 (default) AES-256 (optional)	12.0(5)	9/15/2024	✔	✔

Grandstream

Due to the enhanced security requirement, the Zoom Phone provision server does not support any endpoints factory certificates with MD5 along with some other limitations. Hence there are older hardware versions of the listed Grandstream models that might not support Zoom Phone-assisted provisioning.

The following Grandstream devices have been verified to support the required certificates and encryption for Zoom Phone service:

Model name	Call media (SRTP)	Firmware supported	Firmware date	Hardware version supported	Mutual TLS with AES-256 encryption	ZTP
GRP2601	AES-128	1.0.5.54	7/21/2024	V1.7, V1.8, V2.5, V2.6, V4.6	✔	✔
GRP2601P	AES-128	1.0.5.54	7/21/2024	V1.7, V1.8, V2.5, V2.6, V4.6	✔	✔
GRP2602	AES-128	1.0.5.54	7/21/2024	V1.7, V1.8, V2.5, V2.6, V4.6	✔	✔
GRP2602P	AES-128	1.0.5.54	7/21/2024	V1.7, V1.8, V2.5, V2.6, V4.6	✔	✔
GRP2602W	AES-128	1.0.5.54	7/21/2024	V1.5, V1.6, V2.5	✔	✔
GRP2603	AES-128	1.0.5.54	7/21/2024	V1.5, V1.6	✔	✔
GRP2603P	AES-128	1.0.5.54	7/21/2024	V1.5, V1.6	✔	✔
GRP2604	AES-128	1.0.5.54	7/21/2024	V1.5, V1.6	✔	✔
GRP2604P	AES-128	1.0.5.54	7/21/2024	V1.5, V1.6	✔	✔
GRP2612	AES-128	1.0.11.15	7/21/2024	*(see note)	✔	✔
GRP2613	AES-128	1.0.11.15	7/21/2024	*(see note)	✔	✔
GRP2614	AES-128	1.0.11.15	7/21/2024	*(see note)	✔	✔
GRP2615	AES-128	1.0.11.15	7/21/2024	*(see note)	✔	✔
GRP2616	AES-128	1.0.11.15	7/21/2024	*(see note)	✔	✔
GRP2624	AES-128	1.0.11.15	7/21/2024	*(see note)	✔	✔
GRP2634	AES-128	1.0.11.15	7/21/2024	*(see note)	✔	✔
GRP2670	AES-128	1.0.11.15	7/21/2024	*(see note)	✔	✔
WP810	AES-128	1.0.11.60	6/16/2024	*(see note)	✔	✔
WP822	AES-128	1.0.11.60	6/16/2024	*(see note)	✔	✔
WP825	AES-128	1.0.11.60	6/16/2024	*(see note)	✔	✔

Notes:

Refer to the Check the hardware version number section to make sure your device is supported.
The P within the model name stands for PoE (Power over Ethernet) which does not require a power adaptor.
Contact Grandstream directly if your device model is not listed in this table and if it failed the assisted provisioning process.
See the Grandstream GRP260x Configuration Guide for more information
* Please check the official Grandstream certificate verification website before provisioning, and check quick guidance on how to use the website.

Check the hardware version number of your Grandstream desk phone

On the back of your device, identify the barcode on the label of the device.
In the P/N number, identify the last 6-digit number.
The first 3 digits of that number will be the hardware version number. For example, if the P/N is 962-00113-15A001, then the 15A will be the hardware version and stands for V1.5.

Poly

Notes:

Provisioned Poly devices will automatically upgrade to the latest supported firmware version. Set up firmware update rules if you don't want Poly devices to automatically upgrade.
Zoom only works with Polycom devices that are running at least version 4.0.0 of the UCS firmware. In previous versions (Polycom SIP software 3.x or earlier), upgrading from the phone's web interface, registration, and provisioning will not work with Zoom. This restriction does not apply to OBi Analog Telephone Adapters (ATA).
Polycom VVX OBi edition phones are not supported. The only exception is the VVX D230, which has OBi firmware but is still supported by Zoom Phone.
VVX 250/350/450 come with two firmware versions depending on the hardware revision (Old or New). Please review the Poly Product Shipping Configuration Change Notice for more detailed information about new hardware revisions.
The USB port for storage is disabled by default on Poly Edge E series devices to prevent inadvertent misuse.

Model name	Call media (SRTP)	Firmware supported	Firmware date	Mutual TLS with AES-256 encryption	ZTP	EOL
CCX400 Business Media Phone	AES-128 (default) AES-256 (optional)	9.0.0.10315	8/24/2024	✔	✔
CCX500 Business Media Phone	AES-128 (default) AES-256 (optional)	9.0.0.10315	8/24/2024	✔	✔
CCX505 Business Media Phone	AES-128 (default) AES-256 (optional)	9.0.0.10315	8/24/2024	✔	✔
CCX600 Business Media Phone (note B)	AES-128 (default) AES-256 (optional)	9.0.0.10315	8/24/2024	✔	✔
CCX700 Business Media Phone (note B)	AES-128 (default) AES-256 (optional)	9.0.0.10315	8/24/2024	✔	✔
Edge B10	AES-128	1.1.0.6726	7/21/2024	✔	✔
Edge B20	AES-128	1.1.0.6726	7/21/2024	✔	✔
Edge B30	AES-128	1.1.0.6726	7/21/2024	✔	✔
Edge E100	AES-128 (default) AES-256 (optional)	8.2.2.1176	9/15/2024	✔	✔
Edge E220	AES-128 (default) AES-256 (optional)	8.2.2.1176	9/15/2024	✔	✔
Edge E300	AES-128 (default) AES-256 (optional)	8.2.2.1176	9/15/2024	✔	✔
Edge E320	AES-128 (default) AES-256 (optional)	8.2.2.1176	9/15/2024	✔	✔
Edge E350	AES-128 (default) AES-256 (optional)	8.2.2.1176	9/15/2024	✔	✔
Edge E400 (Note D)	AES-128 (default) AES-256 (optional)	8.2.2.1176	9/15/2024	✔	✔
Edge E450 (Note D)	AES-128 (default) AES-256 (optional)	8.2.2.1176	9/15/2024	✔	✔
Edge E500 (Note D)	AES-128 (default) AES-256 (optional)	8.2.2.1176	9/15/2024	✔	✔
Edge E550 (Note D)	AES-128 (default) AES-256 (optional)	8.2.2.1176	9/15/2024	✔	✔
Rove B1 DECT base station	AES-128	8.0.6	7/16/2023	✔	✔
Rove B2 DECT base station	AES-128	8.0.6	7/16/2023	✔	✔
Rove B4 DECT base station	AES-128	8.0.6	7/16/2023	✔	✔
SoundPoint IP 335 (note A)	AES-128	4.0.14.1580	NA	✔		✔
SoundPoint IP 550 (note A)	AES-128	4.0.14.1580	NA	✔		✔
SoundPoint IP 650 (note A)	AES-128	4.0.14.1580	NA	✔		✔
SoundPoint IP 5000 (note A)	AES-128	4.0.14.1580	NA	✔		✔
SoundPoint IP 6000 (note A)	AES-128	4.0.14.1580G (displayed as 4.0.14.1580 after upgrade)	NA	✔		✔
Trio 8500	AES-128 (default) AES-256 (optional)	7.2.8.0031	8/24/2024	✔	✔	✔
Trio 8800	AES-128 (default) AES-256 (optional)	7.2.8.0031	8/24/2024	✔	✔
Trio C60 (note E)	AES-128 (default) AES-256 (optional)	9.0.0.10315	8/24/2024	✔	✔
VVX D230 DECT Phone	AES-128	7.1.3	2/26/2023	✔	✔
VVX 101 Business Media Phone	AES-128 (default) AES-256 (optional)	6.4.6.3284	8/24/2024	✔	✔	✔
VVX 150 Business IP Phone	AES-128 (default) AES-256 (optional)	6.4.6.3284	8/24/2024	✔	✔
VVX 201 Business Media Phone	AES-128 (default) AES-256 (optional)	6.4.6.3284	8/24/2024	✔	✔	✔
VVX 250 Business IP Phone	AES-128 (default) AES-256 (optional)	6.4.6.3284 (Old hardware rev) 6.4.6.3283 (New hardware rev)	8/24/2024 (see Note)	✔	✔
VVX 300 Business Media Phone	AES-128	5.9.3.9694	NA	✔	✔	✔
VVX 301 Business Media Phone	AES-128 (default) AES-256 (optional)	6.4.6.3284	8/24/2024	✔	✔	✔
VVX 310 Business Media Phone	AES-128	5.9.3.9694	NA	✔	✔	✔
VVX 311 Business Media Phone	AES-128 (default) AES-256 (optional)	6.4.6.3284	8/24/2024	✔	✔	✔
VVX 350 Business IP Phone	AES-128 (default) AES-256 (optional)	6.4.6.3284 (Old hardware rev) 6.4.6.3283 (New hardware rev)	8/24/2024 (see Note)	✔	✔
VVX 400 Business Media Phone	AES-128	5.9.3.9694	NA	✔	✔	✔
VVX 401 Business Media Phone	AES-128 (default) AES-256 (optional)	6.4.6.3284	8/24/2024	✔	✔	✔
VVX 410 Business Media Phone	AES-128	5.9.3.9694	NA	✔	✔	✔
VVX 411 Business Media Phone	AES-128 (default) AES-256 (optional)	6.4.6.3284	8/24/2024	✔	✔	✔
VVX 450 Business IP Phone	AES-128 (default) AES-256 (optional)	6.4.6.3284 (Old hardware rev) 6.4.6.3283 (New hardware rev)	8/24/2024 (see Note)	✔	✔
VVX 500 Business Media Phone (note A, B)	AES-128	5.9.3.9694	NA	✔	✔	✔
VVX 501 Business Media Phone (note B)	AES-128 (default) AES-256 (optional)	6.4.6.3284	8/24/2024	✔	✔	✔
VVX 600 Business Media Phone (note B)	AES-128	5.9.3.9694	NA	✔	✔	✔
VVX 601 Business Media Phone (note B)	AES-128 (default) AES-256 (optional)	6.4.6.3284	8/24/2024	✔	✔	✔

Notes (A):

These are Poly end-of-sale models. Zoom will be removing support for these models in the near future.
Currently, Poly end-of-sale models with a date of manufacture that is older than the date noted are unable to support Zoom's security requirements and cannot be used with Zoom Phone. The manufacturing date is usually identified by a sticker on the bottom of the phone.

Note (B): These models do not support SIP video.

Notes (D):

One expansion module can be attached to a Poly Edge E400 or E450.
Up to two expansion modules can be attached to a Poly E500 or E550.

Note (E): To downgrade Poly CCX series or Poly Trio C60 devices from firmware version PVOS 9.x.x to any earlier version, you must follow a specific process documented by Poly. Poly requires this process and the details and instructions can be found in the following resources:

Yealink

Notes:

Provisioned Yealink devices will automatically upgrade to the latest supported firmware version. Set up firmware update rules if you don't want Yealink devices to automatically upgrade.
After the June 14, 2020 firmware upgrade, the following end-of-life (EOL) models are only allowed to use ZTP once: T29G, T41P, T42G, T46G, T48G, and W56P.
The USB ports for storage are disabled by default on Yealink devices to prevent inadvertent misuse.

Model name	Call media (SRTP)	Firmware supported	Firmware date	Mutual TLS with AES-256 encryption	ZTP	EOL
CP920 (note C)	AES-128 (default) AES-256 (optional)	78.85.3.19	3/26/2023	✔	✔
CP925	AES-128 (default) AES-256 (optional)	148.86.3.10	3/26/2023	✔	✔
CP935W	AES-128 (default) AES-256 (optional)	149.86.3.1	3/26/2023	✔	✔
CP960 (note C)	AES-128 (default) AES-256 (optional)	73.85.3.13	3/26/2023	✔	✔
CP965	AES-128 (default) AES-256 (optional)	143.86.3.6	3/17/2024	✔	✔
T21P E2 Entry Level IP Phone (note C)	AES-128	52.84.3.19	3/26/2023	✔	✔	✔
T23G (note C)	AES-128	44.84.3.20	11/19/2023	✔	✔	✔
T27G (note C)	AES-128	69.85.3.16	3/26/2023	✔	✔	✔
T29G (note C)	AES-128	46.83.3.10	3/26/2023	✔	✔	✔
T31G	AES-128 (default) AES-256 (optional)	124.86.3.8	7/21/2024	✔	✔
T31P	AES-128 (default) AES-256 (optional)	124.86.3.8	7/21/2024	✔	✔
T31W	AES-128 (default) AES-256 (optional)	124.86.3.8	7/21/2024	✔	✔
T33G	AES-128 (default) AES-256 (optional)	124.86.3.8	7/21/2024	✔	✔
T34W	AES-128 (default) AES-256 (optional)	124.86.3.8	7/21/2024	✔	✔
T40G (note C)	AES-128	76.84.3.13	3/26/2023	✔	✔	✔
T41P (note C)	AES-128	36.83.3.10	3/26/2023	✔	✔	✔
T42G (note C)	AES-128	29.83.3.10	8/21/2022	✔	✔	✔
T42S (note C)	AES-128 (default) AES-256 (optional)	66.85.3.20	8/21/2022	✔	✔
T43U	AES-128 (default) AES-256 (optional)	108.86.3.4	3/17/2024	✔	✔
T44U	AES-128 (default) AES-256 (optional)	108.86.3.4	3/17/2024	✔	✔
T44W	AES-128 (default) AES-256 (optional)	108.86.3.4	4/14/2024	✔	✔
T46G	AES-128	28.83.3.10	NA	✔	✔
T46S (note C)	AES-128 (default) AES-256 (optional)	66.85.3.20	12/18/2022	✔	✔
T46U	AES-128 (default) AES-256 (optional)	108.86.3.4	3/17/2024	✔	✔
T48G (note C)	AES-128	35.83.3.10	NA	✔	✔	✔
T48S (note C)	AES-128 (default) AES-256 (optional)	66.85.3.20	12/18/2022	✔	✔
T48U	AES-128 (default) AES-256 (optional)	108.86.3.4	3/17/2024	✔	✔
T53	AES-128 (default) AES-256 (optional)	96.86.3.13	3/17/2024	✔	✔
T53W	AES-128 (default) AES-256 (optional)	96.86.3.13	3/17/2024	✔	✔
T54W	AES-128 (default) AES-256 (optional)	96.86.3.13	3/17/2024	✔	✔
T56A Smart Media Phone (note C)	AES-128 (default) AES-256 (optional)	58.85.3.16	6/19/2022	✔	✔
T57W (note B)	AES-128 (default) AES-256 (optional)	96.86.3.13	3/17/2024	✔	✔
T58A Smart Media Phone (note B)	AES-128 (default) AES-256 (optional)	58.85.3.16	6/19/2022	✔	✔
T58W (note B)	AES-128 (default) AES-256 (optional)	150.86.3.10	7/21/2024	✔	✔
VP59 Video IP Phone (note B)	AES-128 (default) AES-256 (optional)	91.86.3.2	3/17/2024	✔	✔
W56P DECT Phone	AES-128 (default) AES-256 (optional)	25.81.3.6	NA	✔	✔
W57R DECT Phone	AES-128 (default) AES-256 (optional)	118.85.3.1	4/16/2023	✔	✔
W60P DECT Phone	AES-128 (default) AES-256 (optional)	77.85.3.10	10/23/2022	✔	✔
W70B DECT Base Station	AES-128 (default) AES-256 (optional)	146.85.3.8	3/17/2024	✔	✔
W78H DECT Base Station	AES-128 (default) AES-256 (optional)	16.85.3.1	4/16/2023	✔	✔
W80 DECT IP Multi-cell System	AES-128 (default) AES-256 (optional)	103.85.3.3	3/17/2024	✔	✔
W90 DECT IP Multi-cell System	AES-128 (default) AES-256 (optional)	130.85.3.13	3/17/2024	✔	✔

Note (B): These models do not support SIP video.
Note (C): Yealink devices manufactured before 2019 are not compatible with Zoom Phone encryption and certificate security requirements. The device will fail Zoom Phone provisioning, even if it was added to the account manually or in bulk.

Check the manufacturing date of a Yealink phone

Some models of Yealink devices manufactured before 2019 will not be compatible with Zoom. By following these steps, you can easily determine the manufacturing date of your Yealink phone.

Locate the serial number. You can find the serial number on the label, box, or within the user interface of the device.
Determine the manufacturing year:
- For phones manufactured before or during 2021:
  1. Look at the 6th and 7th digits of the serial number. These two digits represent the last two digits of the manufacturing year.
  2. For example, for the serial number 312921805020XXXX, the 6th and 7th digits are 18, indicating the phone was manufactured in 2018.
- For phones manufactured in 2021 or later:
  1. Look for a letter in the serial number. This letter represents the manufacturing year.
  2. For example, for the serial number 808040D04000XXXX, the letter D indicates the phone was manufactured in 2021.
    - D stands for 2021. E stands for 2022. F stands for 2023. G stands for 2024.

Analog gateways

Notes for ATAs:

Only FXS ports can be used on ATAs.
Only these ATA devices support fax. See the following fax setup guides for more information:
- Poly OBi series
- AudioCodes MP1XX series
- AudioCodes MP1288, MP504/508(formally M500Li)
- Grandstream HT8XX ATA series, GXW42XX ATA series
ATA devices often support multiple ports. After performing assisted provisioning, you can assign multiple phone users to a single ATA device based on the port capacity available.

AudioCodes

Notes:

For setup instructions, see the provisioning guide for AudioCodes MP series gateways.
Some models with certain revision numbers are not supported. Refer to the AudioCodes website for more information.
For assisting provisioning on the MP504/508 (formally M500Li) Analog Gateway, follow these instructions.
When you enabled SRTP for these models, there is a reduction in the available channels. Only the following channels have SRTP enabled and are available for use:
- MP-124 - 17 channels from 24
  Note: Follow this link to differentiate if you are using MP-124E or MP-124D
- MP-118 - 6 channels from 8
- MP-114 - 3 channels from 4
- MP-1288:
  - The new firmware 7.40A.500 version will support both new and old hardware component blade. You can review the AudioCodes product notice #0491 component replacement for detailed information about new hardware revision.
- (MP-1288, MP-112, and MP504/508 (formally M500Li) don't have a reduction in available channels)

Model name	Mutual TLS with AES-256 encryption	Call media (SRTP)	Firmware supported
MP504/508 (formally M500Li) Analog Gateway	✔	AES-256	7.26A.356.630 (Manual upgrade only) (3/17/2024)
MP-112 (/CER) Analog Gateway	✔	AES-128	6.60A.368.005 (Manual upgrade only) (7/21/2023)
MP-114 (/CER) Analog Gateway	✔	AES-128	6.60A.368.005 (Manual upgrade only) (7/21/2023)
MP-118 (/CER) Analog Gateway*	✔	AES-128	6.60A.368.005 (Manual upgrade only) (7/21/2023)
MediaPack MP-124E (MP-124D not supported) analog gateway (see note)	✔	AES-128	6.60A.368.005 (Manual upgrade only) (7/21/2023)
MediaPack MP-1288 analog gateway (see note)	✔	AES-256	7.40A.500.775 (LR) (3/17/2024) 7.40A.500.781 (LTS) (3/17/2024) (Manual upgrade only)

**Announced as EoL from 1 June 2022.*

Cisco

Model name	Mutual TLS with AES-256 encryption	Call media (SRTP)	Firmware supported	ZTP
ATA191-MPP (Multiplaform)	✔	AES-128	11.2.3 (1/14/2023)	✔
ATA192-MPP (Multiplatform)	✔	AES-128	11.2.3 (1/14/2023)	✔

Model name

Mutual TLS with AES-256 encryption

Call media (SRTP)

Firmware supported

ZTP

ATA191-MPP (Multiplaform)

✔

AES-128

11.2.3

(1/14/2023)

✔

ATA192-MPP (Multiplatform)

✔

AES-128

11.2.3

(1/14/2023)

✔

Grandstream

Notes:

Check the firmware and device certificate versions before proceeding to device provisioning.
Check the ATA has the latest supported firmware version below, by following the upgrade process.
Due to the enhanced security requirement, the Zoom Phone provision server requires the HT8xx to support Generation 2 (Gen 2) certificate using ECDSA + SHA 384. Verify your ATA unit has the updated Gen 2 device factory certificate installed.
HT812/814/818 have 2 ethernet ports (WAN and LAN). For device provisioning under Zoom Phone web portal page, be sure to specify the MAC address value by using the LAN MAC address value (not the WAN MAC address) from the unit.
When entering the provision/config server URL path under ADVANCE SETTINGS>Firmware Upgrade and Provisioning>Config Server Path, make sure to specify the URL WITHOUT the https:// on the front.

Upgrade an ATA Grandstream firmware

Log in to the ATA web page.
Under the STATUS page, select Software Version, then Prog.
Download the firmware below if you have an older version.
Select the ADVANCE SETTINGS page, Upload Firmware, then Upload from local directory.
Follow the remaining steps to complete the upgrade process.

Verify Grandstream unit has the updated Gen 2 device factory certificate installed

Log in to the device web page.
Under the STATUS page, select Individual Certificate Generation.
Verify the certificate name is GEN 2 (SHA-384 + ECDSA).
- If it isn't the correct name, proceed to the Grandstream guide.
- If it's the correct name, proceed to the Zoom Phone device provisioning.

Find an ATA Grandstream LAN MAC address value

Log in to the ATA web page.
Select the STATUS page.
On the top of the page, find the LAN MAC (Device MAC) address value.

Model name	Mutual TLS with AES-256 encryption	Call media (SRTP)	Firmware supported	ZTP
GXW4216v2	✔	AES-256	1.0.25.1 (6/16/2024)	✔
GXW4224v2	✔	AES-256	1.0.25.1 (6/16/2024)	✔
GXW4232v2	✔	AES-256	1.0.25.1 (6/16/2024)	✔
GXW4248v2	✔	AES-256	1.0.25.1 (6/16/2024)	✔
GDS3710	✔	AES-256	1.0.13.5 (7/21/2024)	✔
HT801	✔	AES-256	1.0.55.5 (8/24/2024)	✔
HT802	✔	AES-256	1.0.55.5 (8/24/2024)	✔
HT812	✔	AES-256	1.0.55.5 (8/24/2024)	✔
HT814	✔	AES-256	1.0.55.5 (8/24/2024)	✔
HT818	✔	AES-256	1.0.55.5 (8/24/2024)	✔

Poly

Notes:

Zoom does not guarantee the performance of analog devices or applications connected to Analog Telephone Adaptors (ATA).
Polycom VVX OBi edition phones are not supported. The only exception is the VVX D230, which has OBi firmware but is still supported by Zoom Phone.

Model name	Mutual TLS with AES-256 encryption	Call media (SRTP)	Firmware supported	ZTP
OBi300 Analog Telephone Adapter (see note)	✔	AES-128	3.2.5.9332 (5/28/2023)	✔
OBi302 Analog Telephone Adapter (see note)	✔	AES-128	3.2.5.9332 (5/28/2023)	✔
OBi504 Analog Telephone Adapter (see note)	✔	AES-128	4.0.5.7707 (3/20/2022)	✔
OBi508 Analog Telephone Adapter (see note)	✔	AES-128	4.0.5.7707 (3/20/2022)	✔
ATA 400	✔	AES-128	4.0.1.6480 (9/17/2023)	✔
ATA 402	✔	AES-128	4.0.1.6480 (9/17/2023)	✔

Desk phone accessories

Notes:

For setup instructions, refer to the embedded links that point to the manufacturers' product page.
After setting up an expansion module, customize line key settings to take advantage of the additional line keys.

Cisco

Model	Firmware version supported
Cisco IP Phone 8851/61 Key Expansion Module	Not applicable
Cisco IP Phone 6800 Key Expansion Module	Not applicable

Note: The Cisco Key Expansion Module only supports customizing line key and positions for BLF, speed dial, and call park.

Poly

Model	Firmware version supported
EM50 expansion module Note: The EM50 can be used with the VVX 450.	Not applicable
Edge E expansion module for E400/450/500/550	Not applicable
Rove 20 DECT handset	8.0.6 07/16/2023
Rove 30 DECT handset	8.0.6 07/16/2023
Rove 40 DECT handset	8.0.6 07/16/2023
Rove R8 repeater	8.0.6 07/16/2023

Yealink

Model	Firmware version supported
BT41 Bluetooth dongle	Not applicable
DD10K DECT dongle	Not applicable
CP930W DECT conference phone (connects to W60B base station)	87.85.3.5
CPW90 wireless expansion mic	Not applicable
EXP40/EXP50 expansion modules Note: The EXP40 can be used with all supported T4 series and the EXP50 with all supported T5 series phones.	Not applicable
WF50 WiFi dongle	Not applicable
W53H DECT handset	88.85.3.7 (3/20/2023)
W56H DECT handset	61.85.3.10 (3/20/2023)
W59R DECT handset	115.85.3.7 (3/20/2023)
W73H DECT handset	116.85.3.7 (3/20/2023)

Session Border Controllers

AudioCodes

Note: Refer to the AudioCodes website for more information.

Model	Firmware version supported
Mediant 500 & Gateway E-SBC	7.40A.501.150
Mediant 500L & Gateway E-SBC	7.40A.501.150
Mediant 800B & Gateway E-SBC	7.40A.501.150
Mediant 800C & Gateway E-SBC	7.40A.501.150
Mediant 1000B & Gateway E-SBC	7.40A.501.150
Mediant 2600 E-SBC	7.40A.501.150
Mediant 500 & Gateway E-SBC	7.40A.501.150
Mediant 4000 SBC	7.40A.501.150
Mediant 4000B SBC	7.40A.501.150
Mediant 9000 SBC	7.40A.501.150
Mediant 9030 SBC	7.40A.501.150
Mediant 9080 SBC	7.40A.501.150
Mediant Software SBC (VE/SE/CE)	7.40A.501.150

Cisco

Note: See the Cisco configuration guide for more information.

Model	Firmware version supported
Cisco Unified Border Element (CUBE)	17.3.3

NextGen

Note: See the NextGen configuration guide for more information.

Model	Firmware version supported
NX-B5000	6.7

Oracle

Note: See the Oracle configuration guide for more information.

Model	Firmware version supported
AP3900	8.4.0 & 9.0.0
AP4600	8.4.0 & 9.0.0
AP6300	8.4.0 & 9.0.0
AP6350	8.4.0 & 9.0.0
AP1100	8.4.0 & 9.0.0
VME	8.4.0 & 9.0.0
AP3950	9.0.0
AP4900	9.0.0

Ribbon

Note: See the Ribbon configuration guides for more information.

Model	Firmware version supported
EdgeMarc 2900e	15.8.0
EdgeMarc 2900a	15.8.0
EdgeMarc 480x	15.8.0
EdgeMarc 6000	15.8.0
EdgeMarc 7301	15.8.0
EdgeMarc 7400	15.8.0
SBC 1000	8.1.0 build 526
SBC 2000	8.1.0 build 526
SWe Lite	8.1.0 build 529
SWe Core	V09.00.00R000
SBC 5000	V09.00.00R000
SBC 7000	V09.00.00R000

TE-Systems

Note: See the TE-Systems configuration guide for more information.

Model	Firmware version supported
anynode SBC	4.4.7

Pagers and intercom

Cloud paging is supported on all Zoom-certified output devices such as SIP speakers, SIP horns, paging adapters, and Visual Alerters from both Cyberdata and Algo.
Note: Algo and Cyberdata Paging Adapter & IP speaker/horn devices/Visual Alerter do not support the Cloud Paging's Emergency Paging overwriting Standard Paging feature. Therefore, Algo and Cyberdata Paging Adapter & IP speaker/horn devices/Visual Alerter will treat all Cloud Paging as a standard page.

2N

Notes:

You can submit a request to Zoom Support to enable video intercom for your 2N IP device.
2N IP Force, Style, Verso, Verso 2.0, and Solo support assisted provisioning. Follow the assisted provisioning process to provision those devices.

Zoom Phone supports the following 2N IP Intercoms:

Model	Firmware
2N IP Force	2.35+
2N IP Style	2.35+
2N IP Verso	2.35+
2N IP Solo	2.35+
2N IP Verso 2.0	2.35+

Algo

Zoom Phone supports the following Algo SIP-based paging and intercom devices:

Notes:

For Algo devices, Zoom Phone supports assisted provisioning. Detailed instructions are provided when provisioning the device in the Zoom web portal. If manual configuration (assisted provisioning is preferred) is needed, see the Algo configuration guide for more information.
- The device firmware needs to be higher than version 3.2.3 to prevent audio loss.
When adding an Algo device to the Zoom web portal, set the following Device Type fields:
- Brand: Algo
- Model: algo-sip-based-device
Certain paging devices have the auto-answer capability, assigning them to any user that has an existing device(s) is not advised. We suggest assigning them to a common area extension instead.
You do not need to contact Zoom to request a generic SIP profile.

Model	Mutual TLS with AES-256 encryption	Call media (SRTP)
8301, 8373 Paging Adapter and Scheduler	✔	AES-128
8166 SIP Horn	✔	AES-128
8028(G2), 8063, 8201 SIP PoE Intercom	✔	AES-128
8128(G2), 8138 Strobe light	✔	AES-128
8180(G2), 8186, 8188, 8189, 8190, 8196, 8198 Speaker	✔	AES-128

CyberData

Zoom Phone supports the following CyberDataSIP-based paging and intercom devices.

Click the links to view configuration guides from CyberData and list of models:

Notes:

If you're running firmware version higher than 20.0.4 and having issues provisioning your CyberData device to Zoom Phone, roll back to firmware version 20.0.4.
If your CyberData device support Night Ringer, this extension can be set up as a user extension to allow the device to be assigned to up to 2 users. Make sure to map the extensions accordingly to the corresponding key positions.
Certain paging devices have the auto-answer capability, assigning them to any user that has an existing device(s) is not advised. We suggest assigning them to a common area extension instead.

Grandstream

Notes:

You can submit a request to Zoom Support to enable video intercom for your Grandstream video intercoms.
Follow the assisted provisioning process to provision those devices.

Zoom Phone supports the following Grandstream video intercoms:

Model	Firmware
Grandstream GDS3710	1.0.13.5