VoiceByIP Solutions Blog

There is nothing worse than your provider blocking outbound SIP traffic (UDP 5060). There is a great service out now that will allow you to bypass your providers hatred for SIP.

Last I checked ClearWire blocks SIP. I am assuming this should work for ClearWire users. If it works please leave a comment and let me know.

A complete list of proxies is available at http://freesps.googlepages.com/

Last I checked the following proxies and ports were avaialable:

free.sipout.com:53
free.sipout.com:69
free.sipout.com:80
free.sipout.com:123
free.sipout.com:135
free.sipout.com:161
free.sipout.com:443
free.sipout.com:1433
free.sipout.com:1812
free.sipout.com:3389
free.sipout.com:5900
free.sipout.com:15345
free.sipout.com:27888
free.sipout.com:44899

What is podlinez.net?

Podlinez is a free service that lets you listen to podcasts on your phone by calling a regular land line phone number.

For example, if you call 1 (415) 376-7253 from any phone, you will hear the CNN podcast.

Get a complete list of podcast numbers from their website:
http://www.podlinez.net

We are all about SIP and VoIP here so PSTN numbers aren’t that impressive. I’ll show you
how to connect to podlinez via SIP bypassing the PSTN. With SIP, you can listen to podcasts
on your Asterisk system without the need to place a PSTN call. No phone line needed!

The Concept:

Since podlinez supports SIP we are going to configure Asterisk to take any number begining with *763(POD) and direct it to the podlinez SIP proxy server. You can of course change *763 to whatever you wish.

Step One:

Non FreePBX users: add the following to your /etc/asterisk/extensions.conf

exten => _*763.,1,Dial(SIP/${EXTEN:4}@podlinez.net)

Free PBX users: add the following to your /etc/asterisk/extensions_custom.conf

[from-internal-custom]
 exten => _*763.,1,Dial(SIP/${EXTEN:4}@podlinez.net)

Step Two:

Reload asterisk: asterisk -rx reload

Enjoy a podcast:

1. Browse to http://www.podlinez.net to find the number of your favorite podcast

2. Dial: *763 and a the number of the podcast you wish to listen enjoy  excluding the country code 1.

3. Enjoy SIP podcasting goodness.

Please leve a comment and let me know how how this works for you.

TelTel is a SIP provider that includes a proprietary SIP client that only works under Windows. The client itself has allot of features such as desktop sharing, presence, and chat capabilities.  The problem is, you can’t use the service on anything but a Windows box. TelTel does not include instructions on their website to configure third party clients.

After some searching I found the settings:

Username: user_AT_email.com | subsitute the @ symbol with _AT_
Authorization username: user@email.com  | you are using the @ sign and not _AT_
Password: yourpassword
Domain: teltel.com
Proxy: obproxy.teltel.com:9090

I have tested these settings with XLite and they work great!