Officeserv advice, upgrading current system 1

[Woogle]

Hi there, 25 years IT engineering and thrown into the deep end with telephones around 4 years ago when a company I maintain systems for over 3 sites wanted to upgrade their 1980's Norstar system with something a bit more "modern".

Not ones for spending money, eBay supplied 3 nice Officeserv 500 units for a mere pittance.

4 years later, with only 2 units left functional and dying a swift death, I have finally convinced them to crawl into the 21st century with the Officeserv 7000 series.

Now I have bored you with the details....

Site one is a car showroom with 8 trunk lines, 36 digital and 7 analogue extensions, I'm just going to install a 7200 up there and be done.

Sites 2 and 3 are hotels.

Site 2, the main hotel has 6 trunk, 59 analogue and 7 digital. (This has the other working OS500, but slots 6, 7 and 8 seem to have died after a power cut, and slot 5 can only take an 8Sli, 16Sli will not work....I suspect a faulty MCP as I have tried installing everything in another cab.)

Site 3, which is an overspill for the main, situated 100 meters down the road, has 2 ISDN 2e trunks and 24 analogue extensions. (The OS500 has no PSU's as they were taken for the main hotel, finding replacements has proven difficult)

What I would like to do (remember this company doesn't like spending money) is keep the telephones as they are, but install 7000 series in both buildings.

Is it possible with the 7000 series to ditch the ISDN in site 3 and have the analogue phones routed via the WiFi bridge (Very stable 600Mb/s) between the two buildings?

Which of the 7000 series would you recommend to accomplish this task?

Any other suggestions?

Alas, buying new phones is probably out of the question, I cannot stress enough when I say they don't like spending money, no matter how critical.

Thank you for any help you can offer, sorry to be so long-winded in my explanation.

 

[OldAndKnackered]

SPNet, if you have an IP link between sites, you can tie them all together, although each site would need unique extension and group numbers (and preferably lines), but once in place, you can call/transfer between sites just by using extension numbers. Also you can configure site A to dial 9 (or 0 or whatever you use) and it will use the link to pick up a line from site B. Incoming will also route calls from site B down the link to site A without need for a transfer.