72 That ostensible problem pertains, not to mobile broadband service, but instead to mobile voice service. In particular, mobile petitioners argue that, if the public switched network can be defined to use both IP addresses and telephone numbers, mobile voice service would no longer qualify as an “interconnected service” because telephone users cannot establish a connection to IP users. The result, mobile petitioners submit, is that the one network everyone agrees was intended to qualify as a commercial mobile service— mobile voice—would necessarily become a private mobile service. We are unconvinced. As a starting point, the Commission’s Order takes up the proper classification of mobile broadband, not mobile voice. The Commission thus did not conduct a formal assessment of whether mobile voice would qualify as an interconnected service under the revised definition of public switched network. But were the Commission to address that issue in a future proceeding, it presumably would note that, regardless of whether mobile voice users can “communicate to” mobile broadband users from their telephones, they can “receive communication from” mobile broadband users through VoIP for the reasons already explained. 47 C.F.R. § 20.3. That capability would suffice to render mobile voice an “interconnected service” under the Commission’s regulatory definition of that term. Id. Moreover, insofar as the Commission may be asked in the future to formally address whether mobile voice qualifies as an interconnected service, the Commission could assess at that time whether there exists the “capability” of communications in the reverse direction, i.e., the capability of mobile voice users to “communicate to” IP users from their telephones. Id. We note that the Commission had information before it in this proceeding indicating that a