iPhone Screenshots


Linkus is a VoIP Mobile Client coordinated with Yeastar PBXs that makes your iOS mobile phone an office extension and links you and your colleagues and customers anywhere anytime. Make and receive calls through corporate phone network to slash call costs and enhance efficiency with consistent in-office experience.

Key Capabilities
- Make and receive enterprise VoIP calls over your Wi-Fi or mobile data networks to lower mobile voice charges
- One number reach to conceal your personal mobile phone number and ensure unified corporate identity
- Set up flexible ring strategy for Linkus and the desktop phone
- Select different outbound routes for different destinations (local/long-distance/international, etc.)
- Corporate directory integration with lookup and visual status indicator (available/unavailable/busy)
- Configurable PBX features including Call Transfer, Call Forwarding, Call Waiting, DND, and Ring Timeout
- Support Push Notifications to alert users of incoming calls while conserving energy

Main Features
Call Forwarding
Call History
Call Route Selection
Call Transfer
Call Waiting
Contact Management
Corporate Directory
Do Not Disturb
Extension Status
Hold & Resume
Native Contacts Integration
One Touch Recording
Outbound Route Selection
PUSH Notification
Ring Strategy Selection
Speed Dial/Favorite

iOS Requirement: iOS 11.0 or higher
Network: 2G/3G/4G or Wi-Fi
Protocol: SIP FRC2361
Codec: iLBC/u-law/a-law/G722/G729
DTMF: Inband, RFC4733 (RFC2833), Info

This application is integrated with Yeastar PBXs; your administrator must provide you with identity information for you to start using.

What’s New

Version 4.4.8

1. Added compatibility with Voicemail Transcription feature, which allows users to read voicemails in text format. 【P-Series IPPBX】
Note: PBX requirement:
• P-Series Appliance Edition: or later.
• P-Series Software Edition: or later.
2. Added Ringtone option: Users can set a specific ringtone for Linkus to distinguish Linkus calls from system calls (Path: Settings>Audio Options>Ringtone).【All Yeastar PBXs】
3. Optimized user experience:
• Optimized user experience in multi-platform login: On Me page, a specific icon beside username helps users know if they have simultaneously logged in to Desktop Client or Web Client.【P-Series IPPBX】
Note: To log out of Desktop Client or Web Client, tap the icon and select Log out of Linkus Desktop Client or Log out of Linkus Web Client.
• Optimized visual experience of Linkus under Full-Screen Display.【All Yeastar PBXs】
• Optimized user experience in receiving a second call during a call.【All Yeastar PBXs】
• Optimized call quality.【All Yeastar PBXs】
4. Fixed the following Caller ID issues:【All Yeastar PBXs】
• When an incoming call from a transferor reached Linkus, Linkus didn't display the original caller's number.
• With fuzzy matching Caller ID enabled on PBX server, if a contact’s Caller ID didn’t exactly match the phone number stored, the contact name could not be displayed on callee’s phone.

Ratings and Reviews

4.2 out of 5
15 Ratings

15 Ratings

Rony Saha ,

Nice App, still need some development

It is a very nice & convenient Proprietary app to connect with Yeastar PBX over other 3rd party apps like Zoiper. Features like PBX contacts with BLF, easy create & connect Audio Conference are blasting. Still need further development like Video call & conference support, changing the server address without logging out, mostly need accounts section like Zoiper, 3CX etc for adding multiple accounts at a time. These added features will make it most professional app for connecting Yeastar PBX.

Currently draining battery too much on forced background run, need to recover the issue ASAP.

euniceet ,

It's pretty good and convenient

It's quick to connect with local or external sever, now I can call with my colleagues freely anytime and anywhere, really surprises me!

Scipaul ,

Needs fix

After update, Names and pictures disappeared and now just displays ext numbers. I got a name to show up by editing it on the server but too tedious to do for every person every time there is a linkus update. Please fix.

App Privacy

The developer, Yeastar, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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