Grandstream UCM IP PBX Series Matrix

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 UsersConcurrent CallsFXO PortsFXS PortsGigabit EthernetConference BridgesEncryption Security
UCM6202 500 50 2 2 Yes 3, up to 25 simultaneous PSTN or IP participants SRTP, TLS and HTTPS
UCM6204 500 75 4 2 Yes 3, up to 25 simultaneous PSTN or IP participants SRTP, TLS and HTTPS
UCM6208 800 100 8 2 Yes 3, up to 32 simultaneous PSTN or IP participants SRTP, TLS and HTTPS
UCM6510 2000 200 2 2 Yes 8, up to 64 simultaneous PSTN or IP participants SRTP, TLS and HTTPS

Grandstream UCM Series