Grandstream GBX20 Extension Module Call Manager Phones you can serve more clients

you can serve more clients simultaneously

two 4450 units on each Digital Station expansion module (including the discontinued IP406 V2 control unit) with a maximum of 10 4450 units per system

Please note that the power supply is not included and must be purchased separately

ensuring comprehensive coverage of participants' voices

equipped with 8 FXS ports and an integrated Gigabit NAT router

Grandstream GBX20 Extension Module Call Manager Phones you can serve more clientsThe Grandstream GBX20 Extension Module enhances the capabilities of Grandstream's GRP2615 and GRP2624 Carrier Grade IP Phones, as well as the GXV3350 IP Video Phone. It comes equipped with a 4. 3 inch 272x480 TFT color LCD display and offers support for up to 40 programmable buttons per module, which can be expanded to 160 contacts with the use of four daisy chained modules. This extension module extends its functionality by providing advanced call