1200 BPS Internal Modem (250-3510A) Catalog Listing Faxback Doc. # 4926 4927 Features of the 250-3510A Modem 4928 Installation of the Modem 4929 Register Information 4930 Result Codes 4931 Selftesting the Modem 4932 Modem Specifications (css 07/28/93)