It seems your modem will work. keywords I saw in your modemdata.txt say it's an slmodem that uses the snd_intel8x0m module.
see this link to make it work: https://help.ubuntu.com/community/DialupModemHowto#head-4be470bbae4b120bd5f6101c9aa218df7518b0c7 section name is Modems supported by ALSA drivers (snd_atiixp_modem, snd_via82xx_modem, snd_intel8x0m), follow instructions until "Modems supported by the Smartlink driver" -- Motorola SM56 Win-modem https://launchpad.net/bugs/61671 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
