N.M. Code R. § 17.11.16.24
A. A LEC shall use the criteria in this subsection to determine whether to require a deposit or other guarantee of payment as a condition of new or continued service.
(1) A LEC may require an existing customer to make a deposit if the customer’s payment record shows substantial nonpayment for intrastate services provided by the LEC in any two (2) of the last six (6) months, or any three (3) of the last twelve (12) months. A LEC may require a deposit even if such customer has paid part of the amount owed before the date service is to be discontinued for nonpayment.
(2) A LEC may, without notice, require an existing customer to pay a deposit in full before service is restored whenever service has been disconnected for non‑payment of outstanding charges.
(3) A LEC shall not require a deposit if the customer furnishes, to the LEC's satisfaction, a written guarantee from a third party to secure payment of the customer's bills for intrastate services provided by the LEC. A LEC shall not require the guarantee amount to exceed the maximum amount of the deposit that would otherwise have been required. The guarantee shall remain in effect until terminated in writing by the guarantor, or until the customer has achieved a satisfactory payment record for services for twelve (12) consecutive months. A LEC shall terminate the guarantee five (5) business days after receiving written notice from the guarantor or five (5) business days after a twelve (12) month period of satisfactory payment.
(4) A LEC shall not require a deposit if the customer has been a customer of the LEC for a similar type of service within a preceding twelve (12) consecutive month period, and the customer's credit was satisfactory and is not otherwise impaired.
[17.11.16.24 NMAC - Rp, 17.11.16.23 NMAC, 2-1-06]