Grandstream Networks HT502 User Manual page 36

Primary IP
Backup IP1
Backup IP2
Tel URI
SIP Registration
Unregister on Reboot
Outgoing Call without
Registration
Register Expiration
Reregister before
Expiration
Registration Retry Wait
Time
Local SIP port
Local RTP port
Use Random Port
Refer to Use Target
FIRMWARE VERSION 1.0.8.4
-NAPTR/SRV (Naming Authority Pointer according to RFC 2915)
-Use Configured IP (Use the three configured IP address instead of any DNS query)
One mode can be chosen for the client to look up server.
The default value is "A Record"
Configure the primary IP for DNS Mode: Use Configured IP
Configure the first backup IP for DNS Mode: Use Configured IP
Configure the second backup IP for DNS Mode: Use Configured IP
The default setting is "Disabled". If the phone has an assigned PSTN
Number, this field should be set to "User=Phone" then a
"User=Phone" parameter will be attached to the "From header" in the SIP
request to indicate the E.164 number. If server supports TEL URI format, then this
option needs to be selected.
Controls whether the HT502 needs to send REGISTER messages to the proxy server.
The default setting is Yes.
Default is No. If set to Yes, the SIP user's registration information will be cleared on
reboot.
Default is No. If set to "Yes," user can place outgoing calls even when not registered (if
allowed by Internet Telephone Service Provider) but is unable to receive incoming calls.
This parameter allows the user to specify the time frequency (in minutes) the HT502
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 reregisteration time before expiration.
Retry registration if the process failed. Default is 30 seconds.
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.
Defines the local RTP-RTCP port pair the HT502 will listen and transmit. It is the base
RTP port for channel 0. When configured,
channel 0 uses this port _value for RTP and the port_value+1 for its RTCP; channel 1
uses port_value+2 for RTP and port_value+3 for its RTCP.
The default value for FXS port 1 is 5004. The default value for FXS port 2 is 5012.
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.
Default is NO. If set to YES, then for Attended Transfer, the "Refer-To" header uses the
HT502 USER MANUAL Page 36 of 49