Phone Settings Page Definitions - Grandstream Networks GSC3505 Series User Manual

Phone Settings Page Definitions

General Settings
Available for the GSC3510 Only
Basic
Settings
Defines the local RTP port pair used to listen and transmit.
Local RTP
Port
The default value is 5004. The valid range is from 1024 to 65400.
Forces the device to use random ports for both SIP and RTP messages. This is usually necessary when multiple
Use
phones are behind the same full cone NAT. The default setting is "No".
Random
Port
Note: This parameter must be set to "No" for Direct IP Calling to work.
Keep-
alive Specifies how the device will send a Binding Request packet to the SIP server in order to keep the "ping hole"
Interval on the NAT router to open. The default setting is 20 seconds. The valid range is from 10 to 160.
(s)
Configures the URI of STUN (Simple Traversal of UDP for NAT) server. The device will send STUN Binding
STUN
Request packet to the STUN server to learn the public IP address of its network. Only non-symmetric NAT
Server
routers work with STUN. The default setting is "stun.ipvideotalk.com".
TURN
Server Fill in the username to validate TURN server.
Username
TURN
Server Fill in the password to validate TURN server.
Password
Use NAT Configures the IP address for the Contact header and Connection Information in the SIP/SDP message. It
IP should ONLY be used if it's required by your ITSP. By default, the box is blank.
Call Settings
Enable Enables call waiting feature. If it is disabled, the GSC3510 will reject the second incoming call during an active
Call session without user's knowledge. But this missed call record will be saved to remind users. The default setting
Waiting is checked (enabled).
Enable
Call Sets the GSC3510 to play the call waiting tone along with LED indicator if there is another incoming call. If
Waiting unchecked, only LED will indicate another incoming call. The default setting is checked (enabled).
Tone
Automati
c Answer Configures the ring time for the unanswered call. The call will be automatically answered after timeout. Default
Ringing is 5.
Time (s)