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Annonce

On peut être passionné par la téléphonie et prendre soin de soi : "Faites du sport, faites du vélo" est la devise du site d'e-commerce lancé par l'un des auteurs de Panoramisk : bikeo. Si vous faites du vélo, que ce soit en ville, sur la route ou sur les chemins plus accidentés, n'hésitez pas à aller faire un petit tour sur www.bikeo.fr pour vos prochains achats verts.
En plus leur plate-forme de téléphonie utilise Asterisk, comme quoi on peut la convergence est une réalité.

12 questions before moving to IP telephony

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  1. Do you already have a telephony system?
  2. Is your IP network ready for voice?
  3. Do you have analog equipment or lines?
  4. Is your voice installation split on multiple location?
  5. Are you using wireless phones on your system?
  6. Do you need a call billing feature?
  7. Are you planning an outsourcing process of the telephony system?
  8. Does telephony needs to be linked to computer systems?
  9. Are you planning to exchange voice over IP traffic with telcos or partners?
  10. Are you using a call-center?
  11. Are you monitoring or recording your phone calls?
  12. Are you using a automated call system?

9- Are you planning to exchange voice over IP traffic with telcos or partners?

This question is key. An IP telephony system can be totally proprietary (like some of the one available on the market today) without any constraints. But as soon as some calls need to be established with another party, like a telco or a partner, it is mandatory to use a generic and well known protocol. More and more telco are on the market proposing voice minutes and DiD services over an IP network private or public like Internet (see “IP Centrex: using international numbers”). Most of the time the SIP protocol is the appropriate choice.

When more telcos will be on the network, why not using a Japanese one to exit calls to Japan directly and at a lower cost? When exchanging a lot of minutes with a partner or a subsidiary, why not using a direct interconnection over the Internet or a specific IP network?

Thus, it is really important before choosing a new system to be sure it supports the SIP protocol for any future interconnection. SIP is the good option since more and more development are done on this protocol and it is the choice of the 3GPP for the interconnection between mobile and terrestrial lines. It is also important to check whether or not the solution supports security protocols which can insure secrecy and confidentiality (TLS and SRTP for example). This last point is important since most of the available systems on the market are not yet mature on this topic, they are mainly dealing with internal communications.

Having the ability to be connected to multiple voice provider on the market will also provide with small installation the ability to use the telco of their choice and change it on the fly. If voice quality is not good, you can swap outbound calls to another one providing a similar service. This feature was only available to very big organizations in the past since it was mandatory to have a local loop with all the carriers to do this. Moving to IP will allow anyone to do it, interesting, no?

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Posted by: Alexandre Chauvin-Hameau, on 06/21/2007
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