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http://web.archive.org/web/20070703211230/http://www.interbell.cz/files/ib200,300.zip
http://web.archive.org/web/20070703211230/http://www.interbell.cz/files/IB-330_navod_k_obsluze.pdf
http://web.archive.org/web/20070703211230/http://www.interbell.cz/ib330-dalsi
http://web.archive.org/web/20071101104200/http://www.interbell.cz/ib330-dalsi

http://web.archive.org/web/20071101104200/http://www.interbell.cz/files/IB-330_common_sip_150.bin
http://web.archive.org/web/20071101104200/http://www.interbell.cz/files/voiptool.rar
http://web.archive.org/web/20071101104200/http://www.interbell.cz/files/upgrade_ringtone.rar
http://web.archive.org/web/20071101104200/http://www.interbell.cz/files/digitmap.rar
http://web.archive.org/web/20071101104200/http://www.interbell.cz/files/autoupgrade.rar