[Asterisk-Users] AAstra 9133i register double account.. ??

[William Harrison]

If the phones are registering twice, and you are 100% sure they are only
configured via the WebUI, then you must have the settings in two places.
There are SIP configs for Global SIP, and also for every available line.
You may have one set of settings in Global SIP, and a different one for
one of the lines, and thus have two registrations.

To be sure that you don't have any latent config items, you may want to
factory default the phone, and start from scratch.  

The .cfg files are simple text config files that can be downloaded from
a TFTP/FTP/HTTP server.  This is all explained in the Administrator's
Guide available from Aastra's website: 

http://www.aastra.com/support/enterpriseip/show_manuals.asp