Description
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IP PBX Communications Server model S20: • Concurrent calls: 10 • Extensions: Unlimited (Recommended up to 20 ext.) • Memory: 5000 min of voicemail (Expandable) • Analog ports: up to 4 analog ports (Not included) • GSM ports: Up to 4 ports (Not included) • Digital ports: not supported • Connectivity: LAN - WAN: 10/100/1000 Mb/s • Protocol: SIP (RFC3261) • Transport: UDP, TCP, TLS, SRTP |
