Grandstream Networks HT503 User Manual page 53

Outgoing Call w/o
Registration
Register Expiration
Reregister before
Expiration
Layer 3 QoS
Local SIP port
Local RTP port
Use Random Port
Hold Target Before
Refer
Refer to Use Target
Contact
Transfer on
conference hangup
bindings request.
This parameter allows users place outgoing calls even when not registered
(if allowed by ITSP) but it's unable to receive incoming calls.
This parameter allows the user to specify the time frequency (in minutes)
the HandyTone ATA refreshes its registration with the specified registrar. The
default interval is 60 minutes (or 1 hour). The maximum interval is 65535
minutes (about 45 days).
This parameter allows the user to specify the reregistration time before
expiration.
Configure SIP DSCP value in decimal (0-63). Default is 26 for SIP DSCP
Configure RTP DSCP value in decimal (0-63). Default is 46 for RTP DSCP.
This parameter defines the local SIP port the HT503 will listen and transmit.
The default value for FXS port is 5060.
This parameter defines the local RTP port pair used by the HandyTone ATA.
The default value for FXS port is 5004.
Default is No. If set to Yes, the device will pick randomly-generated SIP and
RTP ports. This is usually necessary when multiple HandyTone ATAs are
behind the same NAT.
Default is Yes. Allows user to hold the phone call before refer it. If set to No,
the call will not be hold before referred.
Default is No. If set to "Yes", then for Attended Transfer, the "Refer-To"
header uses the transferred target's Contact header information.
Default is No. In which case if conference originator hangs up the
conference will be terminated. When option YES is chosen, originator will
transfer other parties to each other so that B and C can choose either to
continue the conversation or hang up.
HT503 User Manual
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