Grandstream HT503 User Manual - Manual (Page 44)

FIRMWARE VERSION 1.0.14.1 HT503 USER MANUAL Page 42 of 64
Local SIP port This parameter defines the local SIP port the HT503 will listen and transmit. The default
value for FXS port is 5060.
Local RTP port This parameter defines the local RTP port pair used by the HandyTone ATA. The
default value for FXS port is 5004.
Use Random Port Default is No. If set to Yes, the device will pick randomly-generated SIP and RTP ports.
This is usually necessary when multiple HandyTone ATAs are behind the same NAT.
Hold Target Before Refer Default is Yes. Allows user to hold the phone call before refer it. If set to No, the call
will not be hold before referred.
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
hangup
Default is No. In which case if 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 either to 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. If set to Yes, the Outbound Proxy will be removed from the 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.
Authenticate incoming
INVITE
Default is No. If set to Yes, device will challenge the incoming INVITE for the
Authenticate ID and Password with 401 Unauthorized.
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.
Use Privacy Header If set to Default, it will only add Privacy or PPI header when special feature is not
Telkom SA or CBCOM.
Use P-Preferred-Identity
Header
If set to Default, it will only add Privacy or PPI header when special feature is not
Telkom SA or CBCOM.
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.
SIP T2 Interval Maximum retransmission interval for non-INVITE requests and INVITE responses.
DTMF Payload Type This parameter sets the payload type for DTMF using RFC2833
Preferred DTMF method The HT503 supports up to 3 different DTMF methods including in-audio, via RTP