we have just purchased a small company that we want to migrate into an office close to your main office and link them up to our phone system.
the phone system they are using is not owned by them and therefore they will not be able to migrate this with them, the phone system is shared with several other businesses.
we use a Avaya IP Office system which we can set the numbers up they are using on.
however here is my question;
what equipment should we put at this site in order for them to be able to use the phone system? at the moment we have a PBX onsite which can VoIP any phone on the LAN.
I am wondering if I could purchase a device that would be sat on a different site but would allow them to piggyback onto our phone system? does such a device exist. or is there a different solution here which I have overlooked?