User's Manual

FIRMWARE VERSION 1.0.0.5 HT802 USER MANUAL Page 32 of 46
NAT.
Enable RTCP
Default is Yes. Enable/Disable RTCP to provides out-of-band statistics and control
information for RTP session.
Refer-to Use Target
Contact
Default is No. If set to YES, then for Attended Transfer, the ―Refer-To‖ header uses the
transferred target‘s Contact header information.
Transfer on Conference
Hang up
Default is No. In which case if the conference originator hangs up the conference will
be terminated. When option YES is chosen, originator will transfer other parties to
each other so that B and C can choose to either continue the conversation or
hang up.
Disable Bellcore Style
3-Way Conference
Default is No. you can make a Conference by pressing ‗Flash‘ key. If set to Yes, you
need to dial *23 + second callee number.
Remove OBP from
Route Header
Default is No. When option YES is chosen, the Out Bound Proxy will be removed from
Route header.
Support SIP Instance ID
Default is Yes. If set to Yes, the contact header in REGISTER request will contain SIP
Instance ID as defined in IETF SIP Outbound draft.
Validate incoming SIP
message
Default is No. If set to yes all incoming SIP messages will be strictly validated
according to RFC rules. If message will not pass validation process, call will be
rejected.
Check SIP User ID for
incoming INVITE
Default is No. Check the incoming SIP User ID in Request URI. If they don‘t match, the
call will be rejected. If this option is enabled, the device will not be able to make direct
IP calls.
Allow Incoming SIP
Messages from SIP
Proxy Only
Default is No. Check the incoming SIP messages. If they don‘t come from the SIP
proxy, they will be rejected. If this option is enabled, the device will not be able to make
direct IP calls.
SIP T1 Timeout
T1 is an estimate of the round-trip time between the client and server transactions.
If the network latency is high, select larger value for more reliable usage. Default is 0.5
Sec.
SIP T2 Interval
Maximum retransmission interval for non-INVITE requests and INVITE responses.
Default is 4 Sec.
DTMF Payload Type
Sets the payload type for DTMF using RFC2833. Default is 101.
Preferred DTMF method
(in listed order)
The HT802 supports up to 3 different DTMF methods including in-audio, via RTP
(RFC2833) and via Sip Info using SIP INFO messages. The user can configure DTMF
method in a priority list.
Disable DTMF
Negotiation
Default is No. If set to yes, use above DTMF order without negotiation
Send Hook Flash Event
Default is No. If set to yes, flash will be sent as DTMF event.
Enable Call Features
Default is Yes. (If Yes, call features using star codes will be supported locally)