Again, after reading on Direct IP Dialling which enables you to have direct ATA to ATA dialling, bypassing VOIP service providers at http://voipstuff.net.au/IPDialling.html, I started to try it out.
In my case, my ATA is configured to login to SingNet.com and my dynamic DNS is configured to be openix.no-ip.org, so according to the http://voipstuff.net.au/IPDialling.html , my SIP URI would be SIP:31045489@openix.no-ip.org , which I verified by calling from my Gizmo client. Of course, after :
1. Configuring my Linksys PAP2 ATA to accept IP calls following the instruction on the web page.
1.1 If you haven't already done so, log into your ATA and login as ADMIN\ADVANCED.
1.2 Select the SIP tab as in the image below.
1.3 Once you have clicked on the SIP tab, find the NAT Support Paramaters at the bottom of the page, then set the settings as follows:
Handle VIA received: no
Handle VIA rport: no
Insert VIA
received: no
Insert VIA rport: no
Substitute VIA Addr: yes
Send Resp
To Src Port: yes
STUN Enable: yes
STUN Test Enable: no
STUN Server:
stun.fwdnet.net:3478
EXT IP: NB, Leave blank,
EXT RTP Port Min: NB Leave
blank
NAT Keep Alive Intvl: 45
1.4 Switch tabs to the Line 1 Tab
Under NAT Settings, set NAT Mapping Enable: yes
Under SIP Settings, set SIP Port: 5060
1.5 Set the Proxy and Registration Settings
Set Ans Call Without Reg: yes
2. Configure my ADSL router to forward UDP 5060 to my ATA.
3. Creating a SIP Broker Alias
- Register an account at http://www.sipbroker.com/ as 31045489@openix.no-ip.org
- Login to setup SIP Broker Alias
Country : Singapore
SIP Broker Alias : 7889
- So that caller would dial *011657889
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