Help Topic: Telephony - Phone and Devices: ISDN Devices : Add/Edit

Add an ISDN Phone
  • Connect the ISDN phone.
  • From the "Extension" drop down list choose the appropriate internal MSN.
    Range for ISDN: 300-319.
    For internal calls use ${phone_prefix.devices} (asterisk) as a prefix.
  • In the "Name" field enter a name for the phone, e.g. location (to make administration easier).
  • Select an account for the phone as Default account.
  • Choose an icon.
  • To save the new phone click on SAVE.
  • You can configure and administrate up to 20 ISDN devices. Due to the specifications of the S0-Bus only up to 8 ISDN device can be connected concurrently.
    Please note: While connecting 4 or more devices, these devices have to have their own power supply.

Please note: Configure the new phone to the chosen internal MSN. See documentation of phone for more information.

Edit an ISDN Phone
  • From the "Extension" drop down list choose the appropriate internal MSN.
    Range for ISDN: 300-319.
    For internal calls use ${phone_prefix.devices} (asterisk) as a prefix.
  • In the "Name" field enter a new name for the phone, e.g. location (to make administration easier).
  • Change the Default account for the phone.
  • Change the icon.
  • To save the changed phone click on SAVE.
  • You can configure and administrate up to 20 ISDN devices. Due to the specifications of the S0-Bus only up to 8 ISDN device can be connected concurrently.
    Please note: While connecting 4 or more devices, these devices have to have their own power supply.

How many ISDN devices can be configured?

You can configure and administrate up to 20 ISDN devices. The HorstBox offers one ISDN socket. To extend the number of ISDN socket please use a standard ISDN hub.

Due to the specifications of the S0-Bus only up to 8 ISDN device can be connected concurrently.
Please note: While connecting 4 or more devices, these devices have to have their own power supply.