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I know that 35 calls at once can produce that problem. But I am pretty sure that not all people are on the phone at once. We are not using any compression though. Any suggestions on what we could use.
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I know that 35 calls at once can produce that problem. But I am pretty sure that not all people are on the phone at once. We are not using any compression though. Any suggestions on what we could use.

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This is a good summary of codecs :-<br />
<a href="http://www.voip-info.org/wiki-Codecs" rel="ugc">http://www.voip-info.org/wiki-Codecs</a><br />
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I would suggest the Speex codec if supported as you can vary the bandwidth it uses. ILBC and GSM are reasonable. G729 is excelent for the bandwidth it uses but requires a commercial license which might be included in your product.<br />
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Note that if you make data calls over the voice network (faxes for example) they you need to stick with G711 for these as other codecs compress the audio too much and stop them working.
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This is a good summary of codecs :-
http://www.voip-info.org/wiki-Codecs [http://www.voip-info.org/wiki-Codecs]

I would suggest the Speex codec if supported as you can vary the bandwidth it uses. ILBC and GSM are reasonable. G729 is excelent for the bandwidth it uses but requires a commercial license which might be included in your product.

Note that if you make data calls over the voice network (faxes for example) they you need to stick with G711 for these as other codecs compress the audio too much and stop them working.

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I am having a problem with a remote site. I have 35 users with 3com VoIP at the location. So they have 35 computers running over the network and 35 phones over the network. I currently have 2 dedicated T1's going to that site. They are having problems with voice cutting out while you are on the phone. The phone conversation is choppy.
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I am having a problem with a remote site. I have 35 users with 3com VoIP at the location. So they have 35 computers running over the network and 35 phones over the network. I currently have 2 dedicated T1's going to that site. They are having problems with voice cutting out while you are on the phone. The phone conversation is choppy.

3Com NBX 100 over 2 T1 lines

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).