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2N TELEKOMUNIKACE a.s., www.2n.cz 50/117
Do Not Play Incoming Early Media – disable playing of the incoming audio
stream before the call sent by some PBXs or other devices is picked up (early
media). A standard local ringtone is played instead.
QoS DSCP Value – set the SIP packet priority in the network. The set value is
sent in the TOS (Type of Service) field in the IP packet header. Enter the value as
a decimal number. A change of this parameter will not be applied until the
device is restarted.
External IP Address – set the public IP address or router name to which the
device is connected. If the device IP address is public, leave this parameter
empty.
Starting RTP Port – set the initial local RTP port in the range of 64 ports used for
audio and video transmission. The default value is 4900 (i.e. the range is 4900–
4963). The parameter is only set for account 1 but applies to both the SIP
accounts.
RTP Timeout – set the audio stream RTP packet receiving timeout during a call.
If this limit is exceeded (RTP packets are not delivered), the call will be
terminated by the device. Enter 0 to disable this parameter. The parameter is
only set for account 1 but applies to both the SIP accounts.
Broadsoft Compatibility Mode – set the Broadsoft PBX compatibility mode.
Having received re-invite from a PBX in this mode, the intercom replies by
repeating the last sent SDP with currently used codecs instead of sending a
complete offer.
Rotate SRV records – allow SRV record rotation for SIP Proxy and Registrar. This
is an alternative method of transition to backup servers in the event of main
server failure or unavailability.
Calls
General Settings – set the call time limit after which the call is automatically
terminated. The intercom signals termination with a beep 10 s before the call
end. Enter any DTMF character into the call (# on your IP phone, e.g.) to extend
the call time.
Call Receiving Mode (SIP 1, SIP 2) – set the way of receiving incoming calls. The
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