(voip) get a free US number to redirect calls to your Yahoo! Messenger or GTalk or any SIP proxy

After a long time isn’t it ? Guess, I worked too hard in Build and Release control systems of my company.

Anyways: its not new news on how to get a free US number or redirect them to SIP proxy or IM., whats news is: how to do it without spending a cent.

The method which I am gonna show you to redirect to Instant Messengers like Yahoo! or GTalk.

[+] Register ( Subscribe ) your IM at GTalk2VoIP.com. ( It’s Free, and it has loads of other features! )

gtalk2voip.PNG

( The same way it will appear in Yahoo! or MSN )

[+] Now,open an IM session with GTalk2VOiP in your IM client and type “MYPAGE” without quotes. It will send an URL which is the settings page for your account. Launch your browser to that url: shown in the IM conversation.

gtalk2voip2.PNG

[+] In your settings page: note down your SIP number and change quality to G.711.

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[+] Now, thats done: we have configured the IM part correctly.

[+] Visit IPKall and click Sign-Up.

[=] Choose any area code of your choice!

[=] Enter the SIP Phone number which you noted down previously.

[=] Enter the SIP Proxy as gtalk2voip.com

[=] Choose any password and leave the seconds before ring up as it is.

[=] Register and a mail will be sent to your email with your number an URL to activate it. Activate it and lo!

[+] Test calls to your new number! and you should get a voice call in your IM.

[+] If you prefer to use a SIP phone, you need a SIP equipment. You need to configure it to any free SIP providers like www.FreeWorldDialup.com or www.MutualPhone.com.  After signing up with them, you will get a SIP number like xxx@fwd.pulver.net or such. Change your preferences and then you will get your number ringing to your SIP phone.

Note1: This is an incoming call only service.

Note2: Since this is free, it may be closed anytime without any warning.

Note3: The above steps were actually carried out and tested by me., it was working at the time I did and it worked fine. I cannot vouch for its workability when you try!

Blocking Google Talk in your Organization

Recently I was assigned the task of Blocking Google Talk service for the organization I work.

In Google Talk Developer Info: it was told that the Google Talk service runs at url: talk.google.com at port 5222. Tracert revealed that talk.google.com points to talk.l.google.com @ 209.85.137.125.

But: Blocking 209.85.137.125 at port 5222 does not block Google Talk service.

Then I used WildPackets.com’s OmniPeek Personal Edition to probe out a packet level analysis.

Google Talk uses Port 80, Port 443 and Port 5223 other than Port 5222 for its communication purposes. Also: Google Talk connects to 216.239.37.125, 72.14.253.125 and 72.14.217.189 other than 209.85.137.125.

Blocking all these 4 addresses blocks Google Talk at both Browser and Talk Client. Note: This does not disable Google mail.

Bottom line: Block access to 216.239.37.125, 72.14.253.125, 72.14.217.189 and 209.85.137.125 on ports 80, 443, 5222 and 5223.

Note1: This is one of the measures to Block Google Talk. Meebo has an option wherein one can logon to any IM network., including Google, MSN and Yahoo!. So does Kool IM, eBuddy and ILoveIM. So you got to block these sites too if you want to curb IM misuse.

Note2: Geeks will get on a workaround like using an SSH Tunnel, public proxies, TOR, etc., In order to circumvent this., you got to use thirdparty traffic shapers like Akonix IM Control, Websense, etc., that sniff out Jabber traffic and prevent usage of proxies.

Note3: If you want to Block File Transfers in Google Talk block Ports 20 and 21.

Note4: This blocks Google Talk Gadget too !!!

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