The document describes several automatic telephone dialer models from Letel including: the TD101 and TD103 which can operate on line power alone and support prepaid/postpaid cards; the TD105 which can store multiple calling card numbers; the TD115 which has an external power adaptor; the TD125 callback dialer with extra power; the TDM160 monitor to view dialed numbers; the TDP110 programmer; the TD106 mobile phone dialer; the TD101P emergency phone dialer; and the TD145 round robin dialer. The document provides links to product pages for more information on each model.