Modems not-from-ISP don't work

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strelokstk

strelokstk

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Jan 19, 2012
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Hi, i start saying that i live in italy, i posted this question on the italian site but no one was able to help me. So:
I wanted to change the modem that the ISP gives you so i buy one from netgear and i configure it with my father who owns a computer store and set up al lot of modems and routers. Some times there were problems, like reduced speeds (i could see it on the modem's page in browser) or absent dls connection. So i think that the netgear must be defective. When my father come to my house we buy another modem and again we configure it but the same problems happen. It's like my line doesn't want modems not-from-ISP. Once on a forum i read that i should call customer service and tell them to enable the use of other modems. They answered that i had to pay for that kind of help (they did not know what i was talking about. What could it be?
 
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COLGeek

COLGeek

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Apr 6, 2009
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You need to provide the MAC address from the new modem for the ISP to be able to recognize it as a valid device on the network. A call to customer support with that information (the MAC address from the modem) should take care of the problem and that should cost nothing.
 
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bill001g

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Aug 9, 2012
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Cable modems you must tell the ISP and it must be compatible with their system. DSL in general is much simpler and most will work with any ISP. That said there are a couple of different forms of DSL and you need to be sure your modem supports the kind they use. The most common is of course ADSL and is what the vast majority support. The newer kind is called VDSL and it requires a special modem to use the high speed. Many of these will fall back to ADSL if VDSL does not work. There are a couple more variations that the ISP can use.

Most ISP have lists of compatible hardware on their web site. You would need to either select from that list of very carefully read the feature lists to ensure any new modem you want to use has the proper features.

It is not uncommon for the ISP to want to charge you to support equipment other than theirs since it costs them a lot to train their technicians on different brands of equipment.
 
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bill001g

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Aug 9, 2012
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There is no mac address on dsl it only applies to cable modems since the security is done via mac. DSL normally has a userid and password and can be used on any device. The concept of mac address is only partially valid for since DSL is based on ATM and does not use mac addresses at the base level of communication.
 
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