21
Enable Rport
Whether the configuration supports RFC3581, the rport mechanism is used in the internal
network and needs to be supported by the SIP server to maintain the NAT connection
between the internal network device and the external network device.
Keep
Authentication
Configure whether the device supports registration and send authentication directly, so
that the device does not need to authenticate and respond to the server every time. The
server directly returns a registration confirmation message when it receives theregistration
request with authentication.
Enable PRACK
It is recommended to let the device support the SIP PRACK function (mainly used by the
CRBT). It is recommended to use the default configuration.
Ans. With A Single
Codec
When making a called, only respond to a supported Codec
Enable Strict
Proxy
Compatible with special servers (use the source address of the other party when returning
a message, no longer use the address in the via field)
Auto TCP
Configure to automatically use TCP protocol transmission when the message body
exceeds 1300 bytes; guarantee the availability of transmission.
DNS Mode
Support RFC2782 after opening;
Use VPN
Configure to use the VPN function
Transport Protocol Configure to use the transport protocol, TCP, TLS or UDP, the default is UDP.
SIP Global Settings
Strict Branch
Whether the configuration strictly matches the Branch field. If the strict matching of the
Branch field is selected, the branch value in the via field of the SIP message received by
the device must start with z9hG4k, otherwise the device will not respond to the received
SIP message.
Note: This configuration is valid in all SIP accounts.
Enable Group
Configure whether to enable the grouping function. The grouping function is mainly used for
SIP group backup.
Note: This configuration is valid in all SIP accounts.
Field Name
Explanation
Registration
Failure Retry
Time
Configure the server detection type. If the type is option, the device sends an option SIP
message to the server every configured server detection time. The server returns 200 OK to
maintain the server detection. If the type is UDP, the device sends a UDP message to the
server to maintain server detection every configured server detection time.
DND Return
Code
Configure the SIP response code of the DND.
Summary of Contents for JWAT918
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