Between this thread and the other one you created, and never responded too, you should probably call a vendor to site to do your installation since you have no idea on what to do on both ends.

This is not the place to train somebody how to install a phone system.

If your stuck on something and need tips then fine.

All the manuals you need are on the BCM itself, approximately 50 of them.
You also have about 30 questions answer in the FAQ's section.

It's not a simple system you by at K-mart but rather a very sophisticated business phone system.

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Oh, I was just wondering how you would connect a digital telephone to the BCM

You have a digital phone which connects to an AMP cable.
You will need to have keycodes installed on the system for "Digital Sets"
A 25pr fem Amp cable is terminated to a BIX 1A if in Canada, or if in USA the older 66 block or 110 system, or in Europe the Konnex systems (like BIX).
Connect a telephone jack and cable to the blocks list above, then cross-connect to the AMP cable on the BCM.
The correct terminals are laid out in the guide or FAQ's.
You will need to know the color codes of telephone wires.
You will need to have keycodes installed on the system for "Digital Sets"
The RJ45 Ethernet ports on the BCM or to connect to the techs laptop, the LAN and add 2 expansion modules.
IP phones would connect to the LAN, you need IP Client keycodes for that.



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If you don't want to worry about wiring, you could buy the BCM50 Breakout Adapter. This adapter connects to the Amphenol connector on the BCM50 system and provides RJ11 connectors for 12 digital phones, 4 analog phones and 4 analog trunks. If you have a keycode for at least one digital phone, you could then connect the M7100 phone to the first digital set port and the phone should just work.

The adapter looks like this: https://www.ebay.com/itm/255410417802?epid=1519585...

Okay, I'll get the Breakout Adapter but I thought they have RJ-45 ports,the digital phone has an RJ-11 port.. (I think it does but it might not, correct me if I'm wrong)

Yes your correct, they do have RJ45 ports but RJ11 mod cords will still fit since they are narrower.

I have a few, great for lab testing and temp system rentals such as election office's.

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"Nortel M7100"

FYI -
If you want to program through the phone then you will need and M or T series model that has the 3 softkeys under the display.
x7100 and x7208 do not have them.

As for IP sets I cannot recall on the older series but on the 1100 series you will need an 1140e.

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https://www.dttuk.co.uk/full-product-range/voice-c...
Would connecting one end of this to the BCM and one of the RJ-11 connectors work?
To be honest, I think the Breakout Adapters are a little pricey..

Also can the M7100 make calls through a SIP Trunk on the BCM?

The breakout adapter makes things simple - no need to worry about wiring things correctly or trying to locate the correct port / connector. You can use any RJ21 breakout cables / connectors - but then you have to ensure you connect your phone to the correct pair.

Many people here are seasoned veterans who installed many many telephone systems and can deal with things like amphenol cables, BIX blocks and patch panels with their eyes closed. Based on your questions, I suspect you don't belong to that category - so, getting the BCM50 breakout adapter would likely safe you some time.

And yes - the breakout adapter has RJ45 connectors, which are compatible with the RJ11 connectors on the phones cables - so you can just plug the RJ11 connector on the phone cable into the appropriate RH45 connector...

That would work if your testing phones and/or ports on several BCM's, but not ideal for installing a system with phones in offices.

The only disadvantages of the 7100 is that
-only one button that can be programmed, which is a feature/code
-the display is 1 line instead of 2
-no handsfree

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Any phone connected to the BCM50 can be configured to make calls using any available trunk type (digital, analog, IP). If you have a keycode for SIP trunks, a SIP trunk provider that the BCM50 supports and if you configure the system properly, then the M7100 phone could make calls using the SIP trunk.

Okay, that's great, I'm just going to get the breakout adapter.

The breakout adapter can be used by itself but it was designed to go in the wall mount.

See page 88 in the manual which should explain a lot.