IPX-21GS Print Email CARD 4-Port GSM Module ForIPX-2100/IPX-2200/IPX-2500 Product description 4-Port GSM Module for IPX-2100 / IPX-2500 The IPX-21GS 4 GSM module is compatible with PLANET’s IPX-2100/IPX-2500, IPX-2200, and IPX-2100v2/IPX-2500v2 IP PBX System. Shipping Weight 8 ounces (View shipping rates and policies) ASIN B07198ZH4H Date first listed on Amazon May 9, 2017 Prev Next