<div>
Yes it's a firewall using NAT. I'm working on getting a public IP block and throw it on a dmz. Is there anything I can do to mitigate this in the interim ? I have opened all the recommended ports I belive (off hand but I can check) they were in the 4000 range. Thank you for your feedback so far I know it was connection I wasn't sure if it was a NAT issue or QOS etc.. so thank's for putting me on-track <br />

</div>


Yes it's a firewall using NAT. I'm working on getting a public IP block and throw it on a dmz. Is there anything I can do to mitigate this in the interim ? I have opened all the recommended ports I belive (off hand but I can check) they were in the 4000 range. Thank you for your feedback so far I know it was connection I wasn't sure if it was a NAT issue or QOS etc.. so thank's for putting me on-track


<div>
Under the advanced configs for each extension (expand everything in there until you find it) there is a NAT checkbox. This will force Switchvox to tell the phones that everyone should use the public address. It should solve the issue.
</div>


Under the advanced configs for each extension (expand everything in there until you find it) there is a NAT checkbox. This will force Switchvox to tell the phones that everyone should use the public address. It should solve the issue.

<div>
<div class="content wysiwyg-content">
I am using SwitchVOX free edition:<br />
<br />
2) This one is a little worse. It is happening with more and more frequency that a person will call into the system and hear the customer service person loud and clear no problems &nbsp;however when the service reps speak to them there is nothing on the other end. not a low voice or static just dead silence. This does happen sometimes where the rep can speak to the customer and the customer hears loud and clear and then nothing for the rep. again any help on this big issue would be much appreciated &nbsp;
</div>
</div>


I am using SwitchVOX free edition:

2) This one is a little worse. It is happening with more and more frequency that a person will call into the system and hear the customer service person loud and clear no problems  however when the service reps speak to them there is nothing on the other end. not a low voice or static just dead silence. This does happen sometimes where the rep can speak to the customer and the customer hears loud and clear and then nothing for the rep. again any help on this big issue would be much appreciated  

SwitchVOX question 2 of 2 (some conversation are one sided)

IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN). Using the Internet, calls travel as packets of data on shared lines, avoiding the tolls of the PSTN. The challenge in IP telephony is to deliver the voice, fax, or video packets in a dependable flow to the user.

IP Telephony

Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service. The term specifically refers to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).  Examples of the VoIP protocols are H.323, Media Gateway Control Protocol (MGCP), Session Initiation Protocol (SIP), H.248 (also known as Media Gateway Control (Megaco)), Real-time Transport Protocol (RTP), Real-time Transport Control Protocol (RTCP), Secure Real-time Transport Protocol (SRTP), Session Description Protocol (SDP), and Inter-Asterisk eXchange (IAX).