Administration Guide

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HT812/HT814 Administration Guide
Version 1.0.15.4
SIP T1 Timeout
Defines T1 timeout value. It is an estimate of the round-trip time between the
client and server transactions. For example, the HT812/HT814 will attempt to
send a request to a SIP server. The time it takes between sending out the
request to the point of getting a response is the SIP T1 timer. If no response
is received the timeout is increased to (2*T1) and then (4*T1). Request re-
transmit retries would continue until a maximum amount of time defined by
T2. Default is 0.5 seconds.
SIP T2 Interval
Identifies maximum retransmission interval for non-INVITE requests and
INVITE responses. Retransmitting and doubling of T1 continues until it
reaches T2 value. Default is 4 seconds.
SIP Timer D
Configures SIP Timer D defined in RFC3261. 0 - 64 seconds. Default is 0.
DTMF Payload Type
Defines payload type for DTMF using RFC2833.
Preferred DTMF method (in
order)
Sorts DTMF methods (in-audio, via RTP (RFC2833) or via SIP INFO) by
priority.
Inband DTMF Duration
Allows to adjust the inband DTMF duration sent from ATA to IPPBX.
Default is 100 ms. Valid range: 40-2000 ms.
Inter-duration: 50 ms. Valid range: 40-2000 ms.
Disable DTMF Negotiation
Uses above DTMF order without negotiation. Default is No.
Generate Continuous
RFC2833 Events
When enabled the RFC2833 events are generated until key is released.
Default is No.
Send Hook Flash Event
Default is No. If set to yes, flash will be sent as DTMF event.
Flash Digit Control
When it set to YES it allows the user to perform some call setting when both
channels are used while pressing:
• "Flash + 1" in order to hang up the current call and resume a call that
was held.
• "Flash + 2" in order to hold the current call and resume a call that was
held.
• "Flash + 3" in order to perform 3-way conference.
• "Flash + 4" in order to perform attended transfer.
Note: Please refer to the user guide for detailed steps to perform above
operations.
Callee Flash to 3WC
When this feature is set to Yes, device would be able to set up the 3
way conference call even when device is the callee in the second call. Default
is No.