1. A system for connecting telecommunication call sessions from multiple stations at a subscriber premises, comprising: a memory that stores instructions; a processor that executes the instructions to perform operations comprising: receiving, from a station, signaling data over a multiple access link at a network interface; transmitting the signaling data over a network in response to a called number in the signaling data; allocating a channel in the multiple access link at the network interface to communicate user data over the link, wherein the user data is associated with the signaling data, and wherein the user data includes voice data that has higher priority for allocation to the channel than non-voice data; reallocating bandwidth of the channel to different user data after deallocating the channel; and updating a header associated with the channel to indicate that the bandwidth of the channel has been reallocated to the different user data.