Vigor2925 Series User’s Guide
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stream. The default value is 15000.
RTP TOS – It decides the level of VoIP package. Use the
drop down list to choose any one of them.
A
A
p
p
p
p
l
l
i
i
c
c
a
a
t
t
i
i
o
o
n
n
f
f
o
o
r
r
S
S
e
e
c
c
u
u
r
r
e
e
P
P
h
h
o
o
n
n
e
e
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.
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