With dial-a-porn numbers becoming increasingly common, minors are running up thousands of dollars in charges on family telephone bills. A C&P spokesman admitted during a recent television interview that C&P's primary interest is in the revenue generated by dial-a-porn message services. He stated that parents bear the responsibility for any charges emanating from household telephones!

If approved by the Maryland Public Service Commission, a means to block out the undesirable 976 access numbers may be available -- at additional cost to you, of course.

Angry parents bearing the monetary brunt of their minors' excessive obscenity calls may find little comfort in a newly revised Maryland Public Service Commission ruling requiring that obscenity vendors provide information at the beginning of each message before charges are activated and that certain advertisement standards be met. Claiming ignorance of calls made from your telephones may no longer be an acceptable reason for not paying a bill.

Although other telephone companies in other states such as Virginia have successfully found ways to thwart the use of their lines by obscenity peddlers, C&P continues to cloak itself in legal restrictions tied to First Amendment rights. The unwise decision by C&P to place sleaze above corporate responsibility is appalling! As a public utility company, it is unconscionable that C&P should be permitted to take such an unfair advantage of its subscribers by making them the unwitting prey of obscenity vendors.

This matter requires the Maryland General Assembly's highest priority during the upcoming 1988 session. FRANCES SKINNER Oxon Hill