UC - Asterisk IPPBX with 16FXO 2FXS
UC - Asterisk IPPBX with 8FXO 2FXS
UC - Asterisk IPPBX with 4FXO 2FXS
UC - Asterisk IPPBX with 2FXO 2FXS
UC - Asterisk IPPBX with 1E1/T1, 2FXO 2FXS