Grandstream Networks DUAL FXS PORT HT502 User Manual page 39

SIP T1 Timeout
SIP T2 Interval
DTMF Payload Type
Preferred DTMF method
Disable DTMF
Negotiation
DTMF via RFC2833
DTMF via SIP INFO
Send Flash Event
Enable Call Features
Offhook Auto-Dial
Proxy-Require
Use NAT IP
Use SIP User-Agent
Header
Distinctive Ring Tone
FIRMWARE VERSION 1.0.6.8
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.
Maximum retransmission interval for non-INVITE requests and INVITE responses.
Sets the payload type for DTMF using RFC2833.
The HT502 supports up to 3 different DTMF methods including in-audio, via RTP
(RFC2833) and via Sip Info. The user can configure DTMF method in a priority list.
Default is No. If set to yes, use above DTMF order without negotiation
Send DTMF via RTP (According to RFC 2833).
Send DTMF via SIP INFO message.
Default is No. If set to yes, flash will be sent as DTMF event.
Default is Yes. (If Yes, call features using star codes will be supported locally)
This parameter allows users to configure a User ID or extension number that is
automatically dialed when off-hook. Only the user part of a SIP address needs is
entered here. The HT502 will automatically append the "@" and the host portion of the
corresponding SIP address.
SIP Extension to notify SIP server that the unit is behind the NAT/Firewall.
NAT IP address used in SIP/SDP message. Default is blank.
Used to replace SIP User-Agent Header (No Default)
Custom Ring Tone 1 to 3 with associate Caller ID: when selected, if Caller ID is
configured, then the device will ONLY uses this ring tone when the incoming call is from
the Caller ID. System Ring Tone is used for all other calls. When selected but no Caller
ID is configured, the selected ring tone will be used for all incoming calls. Distinctive
ring tones can be configured not only for matching a whole number, but also for
matching prefixes. In this case symbol * (star) will be used.
For example:
if configured as *617, Ring Tone 1 will be used in case of call arrived from the area
code 617. Any other incoming call will ring using cadence defined in parameter System
Ring Cadence located under Advanced Settings Configuration page.
Note: If server supports Alert-Info header and standard ring tone set (Bellcore) or
distinctive ring tone 1-10 is specified, then the ring tone in the Alert-Info header from
server will be used. Bellcore rings and tones are independent from custom ring tones.
The custom ring tones can also be specified by alert-info header, for example
Alert-Info: <http://127.0.0.1>;info=ring5
HT502 USER MANUAL Page 39 of 50