The SCTE has approved three standards, one for cable modems and two for small form factor pluggable optical modules.SCTE 136-2 2013, "Cable Modem TDM Emulation Interface Standard," deals with TDM emulation service (TDM-E), a method for cable operators to deliver T-1, E-1 and NxDS0 emulation services that meet or exceed the quality requirement of applications that use such services. The standard is part of the cable modem family of standards and in particular, defines the TDM-E architecture and components.SCTE 195 2013, "XFP-RF: Interface Specifications for an RF-Modulated Small Form Factor Pluggable Optical Module," will focus on the communications, electrical, and mechanical interfaces for the XFP RF optical transmitter module. Requirements held within this specification apply both to the transmitter module and its host.SCTE 196 2013, "SFP-RF: Interface Specifications for an RF-Modulated Small Form Factor Pluggable Optical Module," will focus on the communications, electrical, and mechanical interfaces for the SFP RF optical transmitter module. Requirements held within this standard apply both to the transmitter module and its host.All three standards are available at http://www.scte.org/standards/Standards_Available.aspx.