Planet Technology VIP-321 - Manual (Page 31)

DTMF Setting
This page defines the RFC2833 Out-Band DTMF, Inband DTMF and Send DTMF SIP Info in this page.
To change this setting, please following your ISP information. When you finished the setting, please
click the Submit button.
RPort Settings
This page defines the RPort Enable/Disable in this page. To change this setting, please following your
ISP information. When you finished the setting, please click the Submit button.
Other Settings
This page defines the Hold by RFC, Voice/SIP QoS and SIP expire time in this page. To change these
settings please following your ISP information. When you finished the setting, please click the Submit
button. The QoS setting is to set the voice packets’ priority. If you set the value higher than 0, then the
voice packets will get the higher priority to the Internet. But the QoS function still need to cooperate with
the others Internet devices.
A Domain Name Server (DNS) SRV record helps connecting to a SIP user in a similar way that an MX
record helps email delivery. When you send email to "[email protected]", the MX record for
example.com might tell the mail transfer agent to deliver email to a completely different machine, such
as "zaphod.foobar.com". Similarly, when you want to make a SIP phone call to [email protected],
the SRV record might tell your computer that it should connect to "galaxy.starsystem.tw" to do so.
Dialing by domain names lets a SIP user have a single public "SIP address" which can be redirected at
will to their current location. SRV records maintain stability and also opens up the possibility to use your
own domain, regardless of the domain of the SIP service you are using.