I have a ip Pbx , and is linked to a Firewall and then to public network. I can make callls using the sip gateway in New York with no pronblem, but problem is receiving calls? Th esignalling is fine th ephone rings but there is no voice ? on either side.
You need to map the incoming RTP ports to your IP-PBX (I assume that this is 172.16.2.90) otherwise your router (Interface Mobility?) won't know where the packets on these ports must go to when they are
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How To Create Custom / Distinctive Ring Tones on Polycom Phones
Purpose and Overview
When creating a custom ring tone, you have simple aspirations: to make your phone cooler than everyone else's. Perhaps you need a louder ringer. Perhaps you w…
The Zaptel people (www.zaptel.com) got kind of annoyed with the fact that they were getting bombarded with searches for the zaptel driver system for Asterisk (not to mention they own the trademark on zaptel). So, they kindly requested that Digium ch…
This Micro Tutorial will give you a basic overview how to record your screen with Microsoft Expression Encoder. This program is still free and open for the public to download.
This will be demonstrated using Microsoft Expression Encoder 4.