3Com NBX - Answered Questions & Fixed Issues


Depending on the mode the phone is in, it may be only a layer 2 device - meaning it just broadcasts at layer 2 to find the NBX and once discovered, uses layer 2 for all communication.

3Com NBX 3102 IP... | Answered on Sep 15, 2018 | 124 views


I would recommend starting with what is simple.
Have you tried replacing the Ethernet patch cord that the phone is connected to?
How about the curly cord between the phone and handset?
Does the phone do the same thing if you connect it to a different port?
Does a different phone do the same then when connected where this phone is connected?

3Com NBX 2102 IP... | Answered on Sep 15, 2018 | 170 views


The extension range needs to be allowed in the Auto Attendant. For example, if most all of your extensions are in the 100 series range and you are trying to get to a 200 series extension then you have to have the option in the Auto Attendant (under Menu tree) for button 2 that says "Reserved in Dial plan".

If the extension is in the correct range then you should check to be sure that the extension is Dial Plan, Tables, Internal 3 Digit extensions (click devices using for older software). Make sure that extension is in the list (on the left for older software).

3Com NBX 3102 IP... | Answered on Jan 16, 2016 | 202 views


The phone password has to be reset on the phone system (by the Administrator), not the phone. If you purchased phones and added them to the system, then those extensions wouldn't have passwords on them if they were newly added to it. If you purchased the entire system and phones then you can reset the phone passwords under "system maintenance", "password administration".

3Com NBX V3000... | Answered on Jan 20, 2015 | 822 views


This does happen occasionally but is not a typical thing. This means that you have either lost network access to the system or a service on the system has stopped. The system will have to be rebooted to get things going normally again. The preferred method (since you can do it through netset) is to connect to the console port with a DB9 straight through serial cable and open hyperterm or putty and connect to it at 9800, 8, 1 none settings. Hit ctrl r and the system will reboot. if you don't have a serial cable then you are forced to pull the power or switch it off and then back on. CAUTION: you risk a database corruption every time the system loses power without closing the database properly (netset or ctrl r through the console) so do this as a last resort. Also, the system will do a disk scan (except V3001) and will take 15 to 45 minutes to complete before the system will start to function again. DO NOT UNPLUG IT AGAIN WHILE IT IS DOING A DISK SCAN! You can tell if it is doing the scan by looking at the S1 and S2 lights on the Call Processor. During a disk scan, they will be alternating back and forth (like police lights). Wait for it to complete and try netset again. I recommend doing a fresh reboot through netset after it comes back up just to be sure it's a fresh clean boot.

3Com NBX V3000... | Answered on Jan 08, 2015 | 244 views


Replacing the Patch cord is the easiest thing to do. If it is crimped on to the cable coming out of the wall, you should put a jack on it. To replace the clear mod plug on the end, you need another Rj45 mod plug and a crimp tool. These can be purchased at Home Depot, Graybar, Fry's electronics, Radio Shack etc. The crimp tool can be a little expensive but if you are going to need to do any more in the future, you'll have what you need. If you decide to put a Cat5e or Cat6 jack on it, they too can be purchased at the places mentioned above. You would need a punch tool instead of a crimp tool. Some jacks are tool-less but that is not the norm.

3Com NBX 3102 IP... | Answered on Jan 08, 2015 | 71 views


This is a phone company recording and is normal for a call that can't complete. It has nothing to do with the phone system.

3Com NBX 2101 IP... | Answered on Jan 08, 2015 | 77 views


This means that the phone and the NCP (Network Call Processor) in the phone system aren't communicating with each other. Multiple problems can cause this. Things to check:
1. Network cable - Is it plugged in, and to the right port?
2. Phone died
3. Is there an available license? (3100 series phones)
4. Is there a network switch problem causing a loss of communication through whatever switch that the phone is plugged into.

3Com NBX 3102 IP... | Answered on Dec 04, 2014 | 2,455 views


I know this is old but maybe it can help someone else.
The line cards are "hot swappable and don't always reset with a reboot (especially a Digital Line card) you should try to re-seat the Line card after the system has booted up. This is done by unscrewing the black knobs at each end and then sliding the card out about an inch. Wait about 10 seconds and plug it back in. It takes about 2 minutes for the card to boot and synch with the phone company. Try your call again. If it's still not working after about 5 minutes, check the card in the phone system and make sure the channels are idle. If they are, call the phone company.

3Com NBX 3102 IP... | Answered on Nov 25, 2014 | 314 views


On 5.0 and older software, Log into the NBX Phone system as administrator and click on "tab to it". Then click on the "security" tab under System Configuration. Click on "Reset User Password". Highlight the user you want to reset and then click "reset. The system will reset the password to the same as the extension number.
On 6.0 and later software, Log into the Phone system and go to "System Maintenance, Password Administration". Select "User Password" in the drop down menu and click "Go". Select the box on the left for the extension you want to reset and click on the "Reset Password" button at the top of the list. The system will reset the password to the same as the extension

Hope that helps!

3Com NBX 3102 IP... | Answered on Nov 25, 2014 | 1,147 views


You can't web to a 3102 phone, only the phone system. If you don't know what the IP address is on the phone system, you will have to get a serial cable (null modem cable) DB9 male to DB9 female and connect to the console 1 of the phone system. You will need a terminal emulator program and connect at 9600, 8, none and 1 for the settings. Type nbxIpConfig (case sensitive) and hit enter. The IP address will then be shown. If this is not what you were asking, please explain.

3Com NBX 3102 IP... | Answered on Apr 04, 2014 | 96 views


Yes, press the feature button and then enter 889. This will restrict the NBX system from sending out your Caller ID information for all calls. You will have to disable this by doing the same thing if you want to get your outbound caller ID back. Feature 890 will restrict the NBX system from sending out your Caller ID information for this call only.

3Com NBX V3000... | Answered on Apr 04, 2014 | 101 views


Are you saying that the phone boots up and has the extension on the display but when called by another phone it is busy?

3Com NBX 2101 IP... | Answered on Apr 04, 2014 | 67 views


That needs to be done at the carrier level (AT&T, Verizon etc...). With a PRI you can do a little bit of routing the numbers you want to block to an bad destination but it isn't easy for most people to do as you need to be comfortable with the dial plan.

3Com NBX 3102 IP... | Answered on Nov 12, 2013 | 265 views


The "hands free" button would need to be pushed on the phone you are calling. This will make the phone answer when an internal call comes in to that extension. Outside calls will still act normally and ring the phone, then go to voicemail. the downside is that it is difficult for fellow employees to leave you a voicemail since your phone answers to intercom on all internal calls when "hands free" is pressed. If all you are talking about is paging through the phones, pressing 621 will page through the phones with a 3 digit dial plan and 6201 on a 4 digit dial plan.

3Com NBX 2102 IP... | Answered on Nov 12, 2013 | 245 views


You need to go to the Telephone group button mappings and click on the lock next to the buttons you want to change. Once you unlock it for the group that the phone is in, you will be able to change it for that phone. Keep in mind that this also allows the other users in that telephone group to change their buttons too.

3Com NBX 2102 IP... | Answered on Nov 12, 2013 | 83 views


Turn on auto discover phones under system settings.

3Com NBX 2101 IP... | Answered on Nov 11, 2013 | 47 views


Reboot the phone system (through the browser) and this should take care of it. There are limited voicemail ports and sometimes they get put on hold and can't be released. I have seen it a lot. some versions of software can clear this but a reboot will take care of it.

3Com NBX... | Answered on Nov 11, 2013 | 58 views


This is a Internet Explorer issue. If you use it in "compatibility view" it will show all users when you click on show all users. Otherwise use google chrome or firefox.

3Com NBX... | Answered on Nov 11, 2013 | 80 views

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