09|Telephony|IP PABX|Grandstream Grandstream UCM Software Extra 50 Extensions | GS-UCM-SOFT-50EXT GS-UCM-SOFT-50EXT R476.10 (Incl. VAT) Software Product Grandstream UCM Software Extra 50 Users, 16 Concurrent calls, Up to 5000 users/1000 Concurrent calls View
