Why is there a maximum limit of 12 phone lines/simultaneous calls?
To ensure that there is enough bandwidth to deliver 12 simultaneous calls and concurrent data transmissions, Covad made the decision to limit the number of phone lines to 12. Covad reserves at least 300 Kbps in bandwidth for data transmission even if all 12 lines are in use. Covad uses the G.711 codec, which uses 106 Kbps per call.
