Snom 200 User Manual page 36

negotiate the codecs. Choosing Single make the phone offer only the pre-
ferrred codec, so that this codec is enforced for a phone call. Offer/Answer
follows the standards as much as possible, and Interoperable tried to fri-
endly to all known equipment.
ckets. This should be set to 160; however operators might want to change
this value.
usually used to control interactive voice response systems like a mail-
box.
4
default. Inband means that the tones are encoded as sinus waves, which
is the fallback mechanism if nothing else can be negotiated with the other
party. Out of band explicitly represents the user input. This should be
used when compressing codecs are used. The default DTMF type is indi-
cated in the payload type. The phone automatically adapts this payload
type if the other party proposes another value.
36 • Web Interface
[
S N O M
The negotiation process describes the procedure how the phones
The type of service (TOS) indicates the priority of the media pa-
DTMF is a method to transport user input between phones. It is
Again, you should usually not change the settings which come by
2 0 0 U M
S E R A N U A L
]