Grandstream Networks GRP2615 Administration Guide

GRP2600 Administration Guide
Version 1.0.5.15
P a g e | 42
Subscribe Expiration
Specifies the frequency (in minutes) in which the phone refreshes its
subscription with the specified registrar. The maximum value is 64800 (about
45 days). The default value is 60 minutes.
Reregister Before
Expiration
Specifies the time frequency (in seconds) that the phone sends re-
registration request before the Register Expiration. The default value is 0.
Enable OPTIONS Keep
Alive
Enable OPTIONS Keep Alive to check SIP Server.
Default is “Yes”.
OPTIONS Keep Alive
Interval
Time interval for OPTIONS Keep Alive feature in seconds.
Default is “30” seconds.
OPTIONS Keep Alive
Max Lost
Number of max lost packets for OPTIONS Keep Alive feature before the
phone re-registration. Default is “3”.
Local SIP Port
Defines the local SIP port used to listen and transmit. The default value is
5060 for Account 1, 5062 for Account 2, 5064 for Account 3, 5066 for Account
4, 5068 for Account 5, 5070 for Account 6. The valid range is from 1 to 65535.
SIP Registration Failure
Retry Wait Time
Specifies the interval to retry registration if the process is failed. The valid
range is 1 to 3600. The default value is 20 seconds.
SIP T1 Timeout
SIP T1 Timeout is an estimate of the round-trip time of transactions between
a client and server. If no response is received the timeout is increased, and
request re-transmit retries would continue until a maximum amount of time
define by T2. The default setting is 0.5 seconds.
SIP T2 Timeout
SIP T2 Timeout is the maximum retransmit time of any SIP request
messages (excluding the INVITE message). The re-transmitting and
doubling of T1 continues until it reaches the T2 value. Default is 4 seconds.
SIP Transport
Determines the network protocol used for the SIP transport. Users can
choose from TCP, UDP and TLS. The default setting is “UDP”.
SIP Listening Mode
Determines whether or not to listen to multiple SIP protocols.
• Transport Only: will listen to configured transport protocol only.
• Dual: will listen to TCP when UDP is selected.
• Dual (Secured): will listen to TLS/TCP when UDP is selected. If TCP or
TLS/TCP is selected, UDP will be listened to
• Dual (BLF Enforced): will try to enforce BLF subscriptions to use TCP
protocol by adding 'transport=tcp' to the Contact header.
The default setting is “Transport Only”.
SIP URI Scheme when
using TLS
Specifies if “sip” or “sips” will be used when TLS/TCP is selected for SIP
Transport. The default setting is “sips”.

Grandstream Networks GRP2615 Specifications

General

Brand	Grandstream Networks
Model	GRP2615
Category	IP Phone
Language	English