Grandstream Networks HT502 User Manual page 51

is 60 minutes (or 1 hour). The maximum interval is 65535 minutes (about 45
days).
Reregister before This parameter allows the user to specify the reregistration time before
Expiration expiration.
Registration Retry Retry registration if the process failed. Default is 30 seconds.
Wait Time
Configure SIP DSCP value in decimal (0-63). Default is 26 for SIP DSCP
Layer 3 QoS
Configure RTP DSCP value in decimal (0-63). Default is 46 for RTP DSCP.
Local SIP port Defines the local SIP port the HT502 will listen and transmit. The default value
for FXS port 1 is 5060. The default value for FXS port 2 is 5062.
Local RTP port Defines the local RTP port pair the HT502 will listen and transmit. The default
value for FXS port 1 is 5004. The default value for FXS port 2 is 5012.
Use Random Port This parameter forces the random generation of both the local SIP and RTP
ports when set to Yes. This is usually necessary when multiple HT502 are
behind the same NAT.
Hold Target Before Default is Yes. Allows user to hold the phone call before refer it. If set to No, the
Refer call will not be hold before referred.
Refer to Use Target
Default is NO. If set to YES, then for Attended Transfer, the "Refer-To" header
Contact
uses the transferred target's Contact header information.
Transfer on
Default is No. In which case if the conference originator hangs up the
Conference Hang up
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.
Disable Bellcore Default is No. you can make a Conference by pressing 'Flash' key. If set to Yes,
Style 3-Way you need to dial *23 + second callee number.
HT502 User Manual
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