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Introduction

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Security is very important in VoIP installations, the Hybird 120 GE has different security mechanism, here we explain the most important information needed for VoIP security.

  • Only Registrations from Private networks are allowed. (A & B)
    • 192.168.0.0 - 192.168.255.255
    • 172.16.0.0 - 172.31.255.255
    • 10.0.0.0 - 10.255.255.255
  • SIP registrations from the Internet are not allowed (B)
  • If SIP registration is not expired then a new SIP registration from different IP address is not allowed.

 

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titleImportant

When a VoIP devices is registered to the PBX and the device restarts, it can happen that the DHCP server will give a new IP address to this device. The device will then try again the register itself but the following can happen.

  • Registration is not expired, new Registration will be blocked.
  • Registration is expired, new Registration is accepted.

This behaviour is mostly seen when the DHCP server is not the Hybird 120 GE. When the Hybird 120 Gigaset edition is the DHCP server then the device will get the same IP address and then there is no problem.

 

 

The above default settings can be changed in the system.

 

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