Business Need

Wireless PBX Solution

Add wireless trunk to business phone system
Reduce call expenses and ensure business continuity

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Compatible IP Phones

GSM, 3G, and 4G connectivity not only reduce telephone expenses but also provide a crucial communication link for offices lacking fixed lines. Thanks to the advanced modular technology, S-Series VoIP PBX allows businesses to add GSM or WCDMA or 4G LTE networks easily and cost-effectively. Yeastar S-Series and P-Series flexibly support up to 500 users and save telephone expenses for enterprises big and small.

Solution Benefits

Essential Connectivity

Provide wireless trunk as the primary trunk where landlines are not available or a backup trunk to ensure connectivity

Reduca Call Costs

Convert fixed-to-mobile calls to mobile-to-mobile to reduce cost, and route calls to the most cost-efficient carriers

Flexible and Scalable

Easily expand the number of users and trunks to fulfill any growing communication needs in the future.

Easy to Manage

Efficiently manage the system through Web Interface, even for dispersed offices and remote workers

Integrated SMS Solution

Empower business with SMS notification, Email to SMS/SMS to Email features


  • Support up to 500 users
  • Support up to 6 GSM/3G/4G trunks
  • GSM Frequency: 850/900/1800/1900MHz (quad-band)
  • WCDMA Frequency: WCDMA 900/2100MHz or 850/2100MHZ or 850/1900MHZ
  • Support VoLTE (depending on carrier support)
  • Support VoIP, FXO, ISDN PRI and ISDN BRI
  • Support UC Softphone and remote workforces

Related Resources

Explore more about the wireless PBX solution.

Success Story

Italian Luxurious Hotel Migrates to VoIP and Uses 4G Trunk as a Backup

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Product Highligts

Modular Telephony Interfaces: GSM/WCDMA/4G LTE, FXS, and More

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Equip Your Mobile Workforce with Unified Communications

Read the Blog  →

Related Products

P-Series PBX System

“PBX Plus More” for elevated SME business communications

S-Series VoIP PBX

Entry-level PBX phone system designed for SMEs

Contact us today to get more information!