My 3Com phone keeps displaying UNABLE TO CONTACT PBX LOGGED OUT FROM PBX...can you help resolve that issue

Are you running ADSL on your fax phone line ? Will need an ADSL line Splitter with fax plugged into phone side of splitter. Could also be plugged into a PBX extension then you need to convert analogue to digital for PBX.

According to my experience and knoledge: the Cisco 2900 and 3900 series platforms have collaboration feature parity with the Cisco 2800 and 3800 Series platforms, so all of the following collaboration capabilities and solutions are present:
• Cisco Unified Survivable Remote Site Telephony (SRST)
• Cisco Unified Border Element
• Time-division multiplexing public-switched-telephone-network (TDM PSTN) and private-branch-exchange (PBX) gateways
• VoiceXML contact-center gateways
• Cisco Unified Communications Manager (UCM) media resources (allowing conferencing, transcoding, and Media Termination Point [MTP])
• Resource Reservation Protocol (RSVP) Agent
• Cisco Unified Communications Manager Express (CME)
• Cisco Unified SIP Proxy
• Gatekeeper

Cisco 3900 Series Routers

From Digium Mailing List:

3Com 3100 series phones do not support SIP with non-3Com systems. They have a basic boot loader which must download code from a 3Com NBX or a 3Com VCX system. If you don't have either of these, then you won't get runtime code on the phone, thereby making it impossible to use the thing with Asterisk.

Asterisk Users 3Com Phones

Is this an external extension or internal on your LAN? Your host is on the same LAN? What system are you connecting it to? Is there a VLAN involved? Is this a managed switch? You simply haven't given enough information for anyone to help you.

You said you configured it as a different extension and it worked perfectly, that implies that the problem is on the PBX system and not the phone. Are you running any sort of End Point Manager to tell the PBX what type of system to talk to?

Default Password is 0000 or 00000000 or Reboot into previous version and change password to an alphanumeric password The word "administrator" has to be entered as the User Name. this pdf could help (http://support.3com.com/infodeli/tools/nbx/50/docs/admin_nbx50.pdf) and this pdf will tell you how to update the machine to a newer version or if it is in the newest version you must downgrade it just folow the instructions on this pdf (http://support.3com.com/infodeli/tools/nbx/60/upgr_nbx60.pdf) or you could try and Connect a PC to the console port of the NBX (9600 baud, 8 data bits, 1 stop bit, no parity)1. All commands are case sensitive. At the NBX or SS3 Prompt type nbxDb. NBXs response- DBITEST (? for help):
2. At the DBITEST prompt type X.NBXs response-encrypted admin pass ---> (!Ofm0uealStEsrx1) 3. Contact 3Com Tech Support to have the password decrypted. if you have anymore problems i would be happy to help and if you cant fix it still i would be happy to do it for you for a small fee ..i hope this helped and i look forward to hearing from you

had the same issue and just resolved it today - contacted my provider and logged into my account via website and activated the 'caller line identification' all works now - interestingly my issue occured in late Nov as well...

are you using a PBX system ? you can block your number the same way you would with other phones. if you have to dial a number before you can get an outside line, the dial the code after,. usually *67

A blinking power LED means that the switch is either downloading software, or is initializing which also includes running the Power On Self Test. You may have firmware issues with the switch and/or the switch is stuck in initialization mode. You may have to contact 3com regarding a warranty issue. Hope this helps. Good luck.