CT Cloud Voice Supported Devices

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Last updated: Mar 26, 2026, 4:52 PM by jillian.west@calltower.com

The devices listed below are supported for auto provisioning on CT Cloud Voice. If a device is not listed below, it is not supported. This list will continue to be updated as support is added or removed for additional or end-of-life devices.

***Please review CallTower's policy for Non-Supported Devices {{ glossary.UC}}.solutions/CT_Cloud/HPBX/CT_Cloud_Voice_Non-Supported_Devices">here***

IMPORTANT NOTE:

Even though a phone may be shown as supported, there may be cases where a phone will not meet a customer’s requirements.

Please check with CallTower SA before recommending a phone model for a particular customer application.

Device

User Guide

Other Resources

Notes

Networking Devices (routers, switches, etc.)

 

See CallTower for information

MasterFax Analog Adapter

 

 

BYOE devices NOT supported

CT Cloud Communicator Desktop

Quick Start Guide

Additional Guides

 

CT Cloud Communicator Mobile

Quick Start Guide

Additional Guides

 

Algo 8128 IP Visual Alerter

User Guide

Product Sheet

 

Algo 8138 IP Color Visual Alerter

User Guide

Product Sheet

 

Algo 8180G2 SIP Audio Alerter

User Guide

Product Sheet

The first generation Algo 8180 is not supported.

Algo 8186 SIP Horn Speaker

User Guide

Product Sheet

 

Algo 8188 SIP Ceiling Speaker

User Guide

Product Sheet

 

Algo 8301 Paging Adapter & Scheduler

User Guide

Product Sheet

 

Grandstream GXW4216

User Guide

Datasheet

 

Grandstream GXW4224

User Guide

Datasheet

 

Grandstream GXW4232

User Guide

Datasheet

 

Grandstream GXW4248

User Guide

Datasheet

 

Grandstream HT801 (version 1)

User Guide

Datasheet

End of Sale

Grandstream HT801 V2

User Guide

Datasheet

 

Grandstream HT802 (version 1)

User Guide

Datasheet

End of Sale

Grandstream HT802 V2

User Guide

Datasheet

 

Grandstream HT812 (version 1)

User Guide

Datasheet

End of Sale

Grandstream HT812 V2

User Guide

Datasheet

 

Grandstream HT813

User Guide

Datasheet

 

Grandstream HT814 (version 1)

User Guide

Datasheet

End of Sale

Grandstream HT814 V2

User Guide

Datasheet

 

Grandstream HT818 (version 1)

User Guide

Datasheet

End of Sale

Grandstream HT818 V2

User Guide

Datasheet

 

Poly CCX 400

User Guide

Datasheet | CCX Comparison

 

Poly CCX 500

User Guide

Datasheet | CCX Comparison

End of Life: 11/30/2024

Poly CCX 600

User Guide

Datasheet | CCX Comparison

 

Poly CCX 700

User Guide

Datasheet | CCX Comparison

 

Poly Edge B10

User Guide

Datasheet | Edge B Comparison

 

Poly Edge B20

User Guide

Datasheet | Edge B Comparison

 

Poly Edge B30

User Guide

Datasheet | Edge B Comparison

 

Poly Edge E100

User Guide

 

 

Poly Edge E220

User Guide

E220 Datasheet

Supports Bluetooth

Poly Edge E300

User Guide

E300 Series Datasheet

 

Poly Edge E320

User Guide

E300 Series Datasheet

Supports Bluetooth

Poly Edge E350

User Guide

E300 Series Datasheet

Supports Bluetooth & Wi-Fi

Poly Edge E400 9

User Guide

E400 Series Datasheet

 

Poly Edge E450 9

User Guide

E400 Series Datasheet

Supports Bluetooth & Wi-Fi

Poly Edge E500 9

User Guide

E500 Series Datasheet

 

Poly Edge E550 9

User Guide

E500 Series Datasheet

Supports Bluetooth & Wi-Fi

Poly Trio 8300

 

Datasheet

 

Poly Trio 8500

 

Datasheet

 

Poly Trio 8800

 

Datasheet

 

Yealink CP925

User Guide

Datasheet

 

Yealink CP935W

User Guide

Datasheet

 

Yealink CP965

User Guide

Datasheet

 

Yealink SIP-T30/P 0

User Guide

T30 | T30P | Series Flyer

 

Yealink SIP-T31/P/G 0

User Guide

T31 | T31P | T31G | Series Flyer

 

Yealink SIP-T33P/G 0

User Guide

T33P | T33G | Series Flyer

 

Yealink SIP-T34W 0

User Guide

Datasheet | T34W Flyer

 

Yealink SIP-T42U 6 0

User Guide

Datasheet | Series Flyer

 

Yealink SIP-T43U 2 6 0

User Guide

Datasheet | Series Flyer

 

Yealink SIP-T44U 2 6 0

User Guide

Datasheet | Series Flyer

 

Yealink SIP-T44W 2 0

User Guide

Datasheet | T44W Flyer

 

Yealink SIP-T46U 2 6 0

User Guide

Datasheet | Series Flyer

 

Yealink SIP-T48U 2 6 0

User Guide

Datasheet | Series Flyer

 

Yealink SIP-T53 3 4 5 6 7 0

User Guide

Datasheet | Series Flyer

 

Yealink SIP-T53W 3 7 0

User Guide

Datasheet | Series Flyer

 

Yealink SIP-T54W 3 7 0

User Guide

Datasheet | Series Flyer

 

Yealink SIP-T57W 3 7 0

User Guide

Datasheet | Series Flyer

 

Yealink SIP-T58W 3 7 0

User Guide

Datasheet

 

Yealink SIP-W70B 1 0

W70 User Guide

Base | W56H | W57R | W59R | W73H | W78H | CP935W | T54W with DD10K

 

  1. Compatible with W56H, W57R, W59R, W73H, and W78H handsets, CP935W Conference Phone, and the T54W Desktop Phone via DD10K Adapter

  2. Compatible with EXP43 sidecar

  3. Compatible with EXP50 sidecar

  4. Supports BT41 Bluetooth adapter

  5. Supports WF40 WiFi adapter

  6. Supports WF50 WiFi adapter

  7. Supports DD10K DECT USB dongle (functionality varies between device series) - DD10K Datasheet

  8. Compatible with EM50 sidecar

  9. Compatible with Poly Edge E Expansion Module

    • Yealink support is limited to devices with firmware x.86.x.x. We are unable to guarantee service for devices on firmware x.87.x.x or later.

Recently Retired Devices (Internal Note)

The following models are no longer supported, but may still be able to be autoprovisioned on CT Cloud Voice. Additional  in Metaswitch is required to facilitate provisioning of these devices. In the event a device in the list below does not provision, the fallback should be to provide the customer with the SIP credentials, as per the CT Cloud Voice Non-Supported Devices article.

CallTower cannot provide ongoing support for any device below; this includes, but is not limited to:

  • Device unable to autoprovision

  • Device losing registration

  • Calls dropping

  • Audio issues (one-way audio, poor call quality, etc)

  • Device feature(s) not working

  • Any other issue that may be outside of the SIP account and other SIP info listed above

Troubleshooting for non-supported devices is limited to validating correct SIP messaging or response from the CT Cloud Voice platform. Once an issue has been determined to be caused by the behavior of a non-supported device, the customer is responsible for pursuing resolution with their hardware vendor.

Device

User Guide

Other Resources

Notes

Algo 8028 SIP Doorphone *

 

 

This EOL is the first generation Algo 8180, not the second generation of the model (8028G2).

Algo 8180 SIP Audio Alerter

User Guide

Product Sheet

This EOL pertains to the first generation Algo 8180. The second generation model (8180G2) is supported.

Grandstream HT801 (version 1)

User Guide

Datasheet

Device is EoS and will be removed from supported list (above) in the coming months.

Grandstream HT802 (version 1)

User Guide

Datasheet

Device is EoS and will be removed from supported list (above) in the coming months.

Grandstream HT812 (version 1)

User Guide

Datasheet

Device is EoS and will be removed from supported list (above) in the coming months.

Grandstream HT814 (version 1)

User Guide

Datasheet

Device is EoS and will be removed from supported list (above) in the coming months.

Grandstream HT818 (version 1)

User Guide

Datasheet

Device is EoS and will be removed from supported list (above) in the coming months.

Poly OBi300 ATA

 

Datasheet

End of Life: 09/30/2022

Poly OBi302 ATA

 

Datasheet

End of Life: 09/30/2022

Poly OBi312 ATA

 

Datasheet

End of Life: 09/30/2022

Polycom VVX 101

 

 

End of Life: 03/31/2022

Polycom VVX 201

 

 

End of Life: 03/31/2022

Polycom VVX 300

 

 

 

Polycom VVX 301

 

 

End of Life: 03/31/2022

Polycom VVX 310

 

 

 

Polycom VVX 311

 

 

End of Life: 03/31/2022

Polycom VVX 400

 

 

 

Polycom VVX 401

 

 

End of Life: 03/31/2022

Polycom VVX 410

 

 

 

Polycom VVX 411

 

 

End of Life: 03/31/2022

Polycom VVX 500

 

 

 

Polycom VVX 501

 

 

End of Life: 06/30/2021

Polycom VVX 600

 

 

 

Polycom VVX 601

 

 

End of Life: 06/30/2021

Poly VVX 150

User Guide

Datasheet

End of Life: 06/30/2023

Poly VVX 250

User Guide

Datasheet

End of Life: 11/30/2024

Poly VVX 350

User Guide

Datasheet

End of Life: 11/30/2024

Poly VVX 450

User Guide

Datasheet

End of Life: 11/30/2024

Poly VVX D230

 

Datasheet

End of Life: 12/29/2023

Yealink CP860

 

 

End of Life: 02/18/2019

Yealink CP920

User Guide

Datasheet

End of Life: 06/30/2022

Yealink CP960

User Guide

Datasheet

End of Life: 06/30/2022

Yealink SIP-T19P

 

 

End of Life: 09/30/2015

Yealink SIP-T19P_E2

 

 

End of Life: 09/30/2021

Yealink SIP-T20P

 

 

End of Life: 01/01/2015

Yealink SIP-T21P

 

 

End of Life: 06/30/2015

Yealink SIP-T21P_E2

 

 

End of Life: 09/30/2021

Yealink SIP-T22P

 

 

End of Life: 12/31/2015

Yealink SIP-T23P

 

 

End of Life: 09/30/2021

Yealink SIP-T26P

 

 

End of Life: 12/31/2015

Yealink SIP-T27P

 

 

End of Life: 02/01/2018

Yealink SIP-T27G

 

 

End of Life: 09/30/2021

Yealink SIP-T28P

 

 

End of Life: 12/31/2015

Yealink SIP-T29G

 

 

End of Life: 03/31/2021

Yealink SIP-T40P

 

 

End of Life: 09/30/2021

Yealink SIP-T40G

 

 

End of Life: 09/30/2021

Yealink SIP-T41P

 

 

End of Life: 04/01/2020

Yealink SIP-T41S

 

 

End of Life: 03/31/2022

Yealink SIP-T42S

 

 

End of Life: 03/31/2022

Yealink SIP-T46G

 

 

End of Life: 04/01/2020

Yealink SIP-T46S

 

 

End of Life: 03/31/2022

Yealink SIP-T48G

 

 

End of Life: 04/01/2020

Yealink SIP-T48S

 

 

End of Life: 03/31/2022

Yealink SIP-T52S

 

 

End of Life: 03/31/2019

Yealink SIP-T54S

 

 

End of Life: 03/31/2019

Yealink SIP-T56A

 

 

End of Life: 03/31/2020

Yealink W60B

 

 

End of Life: 09/30/2018

Grandstream GXW4004

 

 

 

Grandstream GXW4008

 

 

 

Grandstream HT701

 

 

 

Grandstream HT702

 

 

 

Grandstream HT704

 

 

 

  • Does NOT support Transport Layer Security (TLS)