Dialplan - Draytek Vigor2820 Series User Manual

3 . 1 1 . 1 D i a l P l a n
3 . 1 1 . 1 D i a l P l a n
This page allows you to set phone book and digit map for the VoIP function. Click the Phone
Book and Digit Map links on the page to access into next pages for dialplan settings.
Enable Secure Phone
Enable SAS Voice
Prompt
A p p l i c a t i o
A p p l i c a t i o
Enable SAS Voice Prompt, for ex: if vigor router A calls vigor router B with checking Enable
Secure Phone and Enable SAS Voice Prompt, then:
1. After the connection established, vigor router A will send SAS voice prompt to A and
vigor router B will send the SAS voice prompt to B.
2. Then the RTP traffic is secured until the call ends.
3. If vigor router A wants to call vigor router B again next time, both A and B will not hear
any voice prompt again even checking Enable SAS Voice Prompt on web UI. It means
only the first call between them will have voice prompt.
Enable SAS Voice Prompt, for ex: if vigor router A calls vigor router B with checking Enable
Secure Phone but not Enable SAS Voice Prompt, then:
1. After the connection established, vigor router A will NOT send SAS voice prompt to
vigor router A and vigor router B will NOT send the SAS voice prompt to vigor router B.
2. Even no voice prompt, but the RTP traffic is still secured until the call ends.
Note: If the incoming or outgoing calls do not match any entry on the phonebook, the
router will try to make the call "being protected". But, if the call ends up "unprotected"(e.g.
peer side does not support ZRTP+SRTP), the router will not play out a warning message.
It allows users to have encrypted RTP stream with the peer side
using the same protocol (ZRTP+SRTP). Check this box to have
secure call.
If it is enabled, SAS prompt will be heard for both ends every
time. If it is disabled, no SAS prompt will be heard any more.
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n f o r S e c u r e P h o n
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Vigor2820 Series User's Guide