Grandstream Networks GSC3570 User Manual page 42

OPTIONS
Keep
Time interval for OPTIONS Keep Alive feature in Second.
Alive
Interval
OPTIONS
Keep
Number of max lost packets for OPTIONS Keep Alive feature before the GSC3570 re-registration.
Alive Max
Lost
Defines the local SIP port used to listen and transmit.
Local SIP
The default value is 5060 for Account 1, 5062 for Account 2, 5064 for Account 3, 5066 for Account 4, 5068 for
Port
Account 5, 5070 for Account 6. The valid range is from 1 to 65535.
SIP
Registrati
Specifies the interval to retry registration if the process is failed. The valid range is 1 to 3600.
on Failure
The default value is 20 seconds.
Retry
Wait Time
SIP T1 Timeout is an estimate of the round-trip time of transactions between a client and server. If no
SIP T1
response is received the timeout is increased and request re-transmit retries would continue until a maximum
Timeout
amount of time define by T2. The default setting is 0.5 seconds.
SIP T2 SIP T2 Timeout is the maximum retransmit time of any SIP request messages (excluding the INVITE message).
Timeout The re-transmitting and doubling of T1 continues until it reaches the T2 value. Default is 4 seconds.
SIP Determines the network protocol used for the SIP transport. Users can choose from TCP, UDP and TLS. The
Transport default setting is "UDP".
SIP URI
Scheme
Specifies if "sip" or "sips" will be used when TLS/TCP is selected for SIP Transport. The default setting is "sips".
when
using TLS
Use
Actual
Ephemera This option is used to control the port information in the Via header and Contact header. If set to No, these
l Port in port numbers will use the permanent listening port on the GSC3570. Otherwise, they will use the ephemeral
Contact port for the connection. The default setting is "No".
with
TCP/TLS
Outbound
The Outbound proxy mode is placed in the route header when sending SIP messages, or they can be always
Proxy
sent to outbound proxy.
Mode
Support
Defines whether SIP Instance ID is supported or not.
SIP
Instance
Default setting is "Yes".
ID
SUBSCRIB When set to "Yes", a SUBSCRIBE for Message Waiting Indication will be sent periodically. The GSC3570
E for MWI supports synchronized and non-synchronized MWI. The default setting is "No".