Grandstream Networks GXV3380

GXV3380 Administration Guide
Version 1.0.1.19
P a g e | 49
SRTP Key Length
Configures all the AES (Advanced Encryption Standard) key size within
SRTP. It can be selected from dropdown list:
 AES128&256 bit
 AES 128 bit
 AES 256 bit
If it is set to “AES 128&256 bit”, the phone system will provide both AES
128 and 256 cipher suite for SRTP. If set to “AES 128 bit”, it only provides
128-bit cipher suite; if set to “AES 256 bit”, it only provides 256-bit cipher
suite. The default setting is “AES128&256 bit”.
Enable SRTP Key Life
Time
Defines the SRTP key life time. When this option is set to be enabled,
during the SRTP call, the SRTP key will be valid within 2
31
SIP packets,
and phone will renew the SRTP key after this limitation. Default is “Yes”.
RTCP Destination
Configures a remote server URI where the RTCP messages will be sent to
during an active call.
Symmetric RTP
Configures if the phone system enables the symmetric RTP mechanism.
If it is set to “Yes”, the phone system will use the same socket/port for
sending and receiving the RTP messages. The default setting is "No".
RTP IP Filter
Receives the RTP packets from the specified IP address and Port by
communication protocol. If it is set to “IP Only”, the phone only receives the
RTP packets from the specified IP address based on the communication
protocol; If it is set to “IP and Port”, the phone will receive the RTP packets
from the specified IP address with the specified port based on the
communication protocol. The default setting is “Disable”.
RTP Timeout (s)
Disconnects the call automatically when there is no RTP stream for a
specific timeout. Default is 30 seconds.
Account/SIP/Call Settings
Call Features
Start Video
Automatically
Permits the phone system to enable the video feature automatically when
it makes an outbound call. If set to “Yes”, the video codec attributes will be
included in the SIP INVITE message. Or the attributes will not be included.
The default setting is “Yes”.
Remote Video Request
Configures the preference to handle video request from the remote party
during an audio call. The default is “Prompt”.
 “Prompt”: A message will be prompted if a video request is received.
Users can select “Yes” to establish video or “No” to reject the request.
 “Accept”: Video request will be accepted automatically, and video will be
established.
 “Deny”: Video request will be rejected automatically.