§ 52.27 - Deployment of transitional measures for number portability.

(a) All LECs shall provide transitional number portability measures, as defined in section 52.21(q) of this chapter, 47 CFR 52.21(q), as soon as reasonably possible upon receipt of a specific request from another telecommunications carrier, until such time as the LEC implements a long-term database method for number portability in that area.

(b) A LEC must provide the particular transitional number portability measure requested by a telecommunications carrier, except as set forth in paragraph (c) of this section.

(c) A LEC that does not provide a requested transitional number portability measure must demonstrate that provision of the requested transitional number portability measure either is not technically feasible or if technically feasible, is unduly burdensome.

(1) Previous successful provision of a particular transitional number portability measure by any LEC constitutes substantial evidence that the particular method is technically feasible.

(2) In determining whether provision of a transitional number portability measure is unduly burdensome, relevant factors to consider are the extent of network upgrades needed to provide that particular method, the cost of such upgrades, the business needs of the requesting carrier, and the timetable for deployment of a long-term number portability method in that particular geographic location.

(d) LECs must discontinue using transitional number portability measures in areas where a long-term number portability method has been implemented.