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Voip expert advise pls.

Posted on 2003-12-01
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Last Modified: 2008-03-03
Hi,

I looking at Voip service. Have go through some guide but still cannot fully understand.
Any good review, diagram website.?

Correct me:=
office phone(PSTN) ---> Cisco Router(DataCenter)---> internet connectivity ----> Voip ISP ?

Clarification need:
-PXS
-PXO
-Gatekeeper
-Any Cisco product recommend
-Besides Cisco, any other hardware products recommend
-How many simultenous call can be supported, if 256kbps connectivity

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Question by:qazakax
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sheahmed earned 50 total points
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You configure a dial-peer for every voice call ... and a codec is used ... that codec determines the bandwidth utilized by the voice call ... there are certain codecs which can reduce your bandwidth size upto 12k ... so you can make about 20 calls simultaneously ...

- FXS: An FXS interface connects directly to a standard telephone and supplies ring, voltage, and dial tone. The Cisco FXS interface is an RJ-11 connector that allows connections to basic telephone service equipment, keysets, and PBXs.

- FXO: An FXO interface connects to the PSTN central office and is the interface offered on a standard telephone. The Cisco FXO interface is an RJ-11 connector that allows an analog connection at the PSTN central office or to a station interface on a PBX.

- GateKeeper: component of an H.323 conferencing system that performs call address resolution, admission control, and subnet bandwidth management.


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