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Sipdex IPPBX | IP Phone | Telephone system |
  • Home
  • IPPBX
    • M100 – support 150 Concurrent calls
    • M200S – support 30 Concurrent calls
    • M250 School IP Phone system
    • DB20C on Cloud
  • Softphone App
  • SIPDOOR
  • SIP Gateway
  • SIP Call Logger
  • Partner
  • Contact us

Frequently Asked Questions

Home Why do I have one-way voice on the analogue trunks?

Why do I have one-way voice on the analogue trunks?

Please check if you had enabled polarity switch option on the analogue trunk advanced settings.

IPPBX Troubleshooting
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Installation Guide

  • DB20C
  • School IP Phone system
  • SIP Call Logger
  • Softphone
  • Chapter 1: Hardware Setup
  • Chapter 2: Connect to the Network & Access IPPBX
  • Chapter 3: Basic Configuration & Outgoing Call
  • Chapter 4: Incoming Call
  • Chapter 5: System Feature
  • Chapter 6: Extension User Web Portal
  • Chapter 7: Feature Code
  • Chapter 8: Fax
  • Chapter 9: Call Recording
  • Chapter 10: Networking
  • Chapter 11: Security
  • Chapter 12: System Settings
  • Chapter 13: Reporting

Sip Trunk Configuration Guide

  • Chapter 14: HKBN Sip trunk (PSTN) Configuration
  • Chapter 15: Wharf T&T Sip Trunk (PSTN) Configuration
  • DB20C
  • School IP Phone system
  • SIP Call Logger
  • Softphone

SIP TRUNK Provider (Tested)

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  • powered by Matrix Technology (HK) Ltd
  • Flat G, 4/F, Effort Industrial Building, 2-8 Kung Yip Street, Kwai Chung, NT, Hong Kong
  • 852-39001978
  • 852-39001999
  • info@sipdex.com
  • www.sipdex.com

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