How to change analog PBX to digital, while maintaining the topology?

Question

ATS

Good afternoon, there was a need to switch from the old KX824TEM PBX to a digital (soft) one, the kerio operator will be used as a soft one, tell me how to save the existing analog circuit and the existing telephone sets only when replacing the PBX. meager functionality and a larger number of internal subscribers is needed.

Answer 1

There is a point here - if you plan to save money on replacing telephone sets from analog to SIP, then there is a non-illusory degree of probability that the game is not worth the candle.
To understand the essence of the issue, I propose to take into account
1) The cost of supporting SCS for at least 3 years in advance. Please note that your number of outlets with SIP devices may become 2 times less, because. in normal tubes, there are usually 2 ports and a computer can be connected via phone. Think about how much it will cost to build a new SCS in case of relocation of the organization.
2) The cost of owning a gateway for the number of ports you need. For example GXW4248 how much does it cost. Don't forget to factor in the cost of customization.
3) The cost of analog phones, they are also not free.
With all these factors, using the old analog topology can cost the same as going full digital.