Inter-Tel 550.2300 Axxess Loop Start Card Multiplexers It supports 6 telephone lines

It supports 6 telephone lines and 8 telephone extensions on its own

The Adtran 1200691E1 also works in the Adtran NetVanta 7060 and Adtran 6355

Two Gigabit TX uplink ports are included for high speed stacking of the switches together

2 Gigabit TX Port Uplinks

Inter-Tel 550.2300 Axxess Loop Start Card Multiplexers It supports 6 telephone linesInter Tel 550. 2300 Axxess Loop Start Card Description: The Inter Tel 550. 2300 loop start card provides 4 ports for loop start CO lines. These 4 CO lines FXO trunks provide analog lines to your Inter Tel phone system. Use them to connect your Inter Tel Axxess system to the PTSN or use them as a backup connection through the Inter Tel 550. 2300. The main board 550. 2300 provides 4 CO lines while an optional daughterboard (550. 2301) can provide an