ZyXEL Communications ISG50 User Manual
Chapter 29 Extension Management
ISG50 User’s Guide
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• Each extension can be a member of only one authority group.
• SIP and FXS extensions are treated the same within an authority group.
• SIP and FXS extensions are treated the same within an authority group.
Mobile Extensions
A mobile extension is essentially call forwarding to both your IP phone extension and another
phone. When you set up a mobile extension and then activate it from your IP phone using a feature
code (
phone. When you set up a mobile extension and then activate it from your IP phone using a feature
code (
), all calls sent to your IP phone extension are also sent at the same
time to the phone that is designated as your mobile extension. When the call is picked up on one
phone, the ISG50 stops ringing the other.
phone, the ISG50 stops ringing the other.
Figure 292
A Mobile Extension Example
ISG