User's Manual

GSC36XX Series User Manual
Version 1.0.1.3
P a g e | 33
Local SIP Port
Sets the local SIP port. Default setting is 5060 for Account 1, 5062 for
Account 2, 5064 for Account 3, 5066 for Account 4.
SIP Transport
Chooses the SIP transport protocol. UDP, TCP or TCP/TLS.
Default setting is UDP.
Stream
Select the Video stream to be used by the GSC36XX when call is made
from this SIP Account.
Default is Stream 2.
Enable DTMF
Specifies the mechanism to transmit DTMF digits. There are 2 supported
modes:
• RFC2833 sends DTMF with RTP packet. Users can check the RTP
packet to see the DTMFs sent as well as the number pressed.
• SIP INFO uses SIP INFO to carry DTMF. Default setting is
"RFC2833"
DTMF Payload Type
Configures the payload type for DTMF using RFC2833.
Default value is 101.
Range: 96~127.
Unregister On Reboot
Allows the SIP user's registration information to be cleared when the GSC
reboots. The SIP REGISTER message will contain “Expires: 0” to unbind
the connection.
NAT Traversal
This parameter configures whether the NAT traversal mechanism is
activated. Users could select the mechanism from No, STUN, Keep-alive,
UPnP, Auto. The default setting is “No”.
If set to “STUN” and STUN server is configured, the GSC will route
according to the STUN server. If NAT type is Full Cone, Restricted Cone or
Port-Restricted Cone, the unit will try to use public IP addresses and port
number in all the SIP&SDP messages.
The GSC will send empty SDP packet to the SIP server periodically to keep
the NAT port open if it is configured to be “Keep-alive”. Configure this to be
“No” if an outbound proxy is used. “STUN” cannot be used if the detected
NAT is symmetric NAT. If the firewall and the SIP device behind the firewall
are both able to use UPNP, it can be set to “UPNP”. Both parties will
negotiate to use which port to allow SIP through.
Enable SRTP
Enable SRTP mode based on your selection from the drop-down menu.
The default setting is “Disabled”, the two other modes are “Enabled but Not
Forced” and “Enabled and Forced”.
Special Feature
Configures GSC settings to meet different vendors’ server requirements.
Users can choose from Standard, Broadsoft or Telefonica Spain.