N.Y. Comp. Codes R. & Regs. tit. 16, § 609.9
(a) No telephone corporation shall require any applicant or existing residential customer to post a security deposit as a condition of receiving basic local exchange service unless the existing residential customer or applicant:
(6) fails to provide reasonable proof of identity pursuant to section 609.3(a)(6) of this Part.
(b) Payment of deposit.
If a telephone corporation requires a deposit from an existing residential customer or an applicant for telephone service, it shall permit such customer to pay the deposit in installments over a period not to exceed six months.
(c) Exceptions to deposit authorization.
(2) No telephone corporation shall demand or hold a deposit from any applicant or existing residential customer it knows is 62 years of age or older unless such customer has had service terminated for nonpayment of bills within the preceding six months. Telephone corporations shall permit an applicant or existing residential customer 62 years of age or older to pay the deposit in installments over a period not to exceed 12 months.
(d) Deposit amounts.
In any case where customer deposits are authorized by this section, the deposit amount shall not exceed two times the average monthly bill for basic local exchange service for a calendar year in order to secure payment for basic local exchange services actually rendered or for the rental of fixtures, instruments and facilities actually supplied.
(e) Interest on deposits.
Every telephone corporation shall allow every customer from whom a deposit is required interest on the amount deposited at a rate prescribed annually by the commission.
(f) Application of deposit to unpaid bill.
Each telephone corporation holding customer deposits shall render to each depositor, when and as his or her deposit is applied to an unpaid bill or bills, a statement showing:
(2) the balance of the bill or bills remaining unpaid or the balance of the deposit and interest thereon remaining to the credit of the depositor.
(g) Refunds.
(4) For purposes of establishing a refund date when deposits are paid on an installment plan, the date will be the day of receipt of the first installment.
(h) Circular containing terms of deposit.
Each and every telephone corporation holding customer deposits shall keep on hand for distribution to its customers a summary of the pertinent features of these requirements and shall inform customers from whom deposits are requested of its availability.
(i) Records.
Each telephone corporation holding customer deposits shall keep adequate records with respect to each deposit.