sundance-communications.com/forum Forums Other TDM Phone Systems ESI Telephones & Systems Need advice on replacing Nortel system

Hey guys:

I have prospective customer with an older Nortel system (not sure of the model)but uses the M7310 & other model phones. I have not done a site survey yet but here is what I have learned via phone call: Site is a 100 acre campus with 6 or more locations for phones. Apparently has some kind of opx for these phones as distances exceed 2,000 feet from MDF. System connected via 50-100 pair cable between sites. Does not have a wired data network (wireless only) and this will rule out IP system as it is too costly to put in.

An ESI dealer in my state has proposed an ESI CS100 server with 29 each 48-key phones. I am an ESI dealer and I know that this will not work due to distance limits for cable. Only thing I can see is use a couple of CS50's and connect via ESI LINK but this would require another broadband connection which I"m not sure the customer will go for.

I am interested to know if anyone has a similar site and how did you work this out. I am not opposed to other telcom systems if this is the only solution.

Thanks for your advice!

Lighthouse Bill

mix and match. use digital phones and use local IP phones for the remote buildings. This may be more cost defective than you think.

SST:

Thanks for your advice. I had that in mind but as I mentioned, they have a wireless network and I don't think this will work with local IP phones. If you have tried this before, I would be interested to know how this worked.

Thanks,
Lighthouse Bill

Sorry, it didn't compute that they are using wireless 2000 feet away.I figured they would have an access point linked with fiber. Cheap people are hard to fix.

You might dig-up a remote IP phone and pre-test their wireless link to see how it works; you can use the esi software esi-networx to simulate traffic at the same time.

I do have one campus with a group of modular buildings at 1600 feet with 24 button sets working just fine.

I believe the wireless would need to be bridged between the locations and the phones must be on the same subnet as the pbx in order to use local IP phones. I just completed an installation that was 3 buildings for a county government spread out over approx 2000 acre complex and had a Microwave connection between the sites. I had to use remote IP's because each building was on a different subnet.

We have a site that we do just that - bridged wireless hops about 2200 feet. 4 Local phones, Cisco equipment with directional antennas. Works just fine.

Your wireless link will make or break you.

You could use some ethernet over copper equipment to get a 4-10 meg link just for IP telephones. www.actelis.com