30 users small office VoIP PBX (Private Branch Exchange) phone systems comparison

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Bigger Phone Systems
Feature/ModelSwift CXW1000Swift CXW1100Swift Ultra CXW1200Swan CXW2000Software PBX (CompletePBX virtual machine)
Compact PBX SystemCompact PBX System FXOCompact PBX System SSDSwan - powerful elegance. 1U IP-PBX up to 500 extensionsdownload-software-pbx
Extensions licensed 30-500 30-500 30-500 100-500 up to 5000 users, licensed per amount of extensions
Max. recommended users200200200250up to 5000 users, licensed per amount of extensions
Max. concurrent calls (SIP only)200200200200Based on resources
Max. concurrent calls (PRI + FXS) 30 via Astribank
30 via Astribank
30 via Astribank
60-
Analog Lines (FXO)-4--via gateway
Analog Lines 48 via Astribank48 via Astribank
48 via Astribank
up to 32 Integral
48 Total via Astribank
500 via Gateways
Analog Extensions48 via Astribank
48 via Astribank
48 via Astribank
48 via Astribank
BRI ISDN8 via Astribank
8 via Astribank
8 via Astribank
up to 8 Integralvia gateway
E1/T1 PRI, E1 R2, T1 CAS1 via Astribank
1 via Astribank
1 via Astribank
up to 2 Integralvia gateway
Ethernet ports1 x 1 GB
1 x 1 GB
1 x 1 Gbps
1 x 100 Mbps		2 x 1 GB-
Storage32 GB
32 GB
250 GB SSD250 GB-
Rapid Recoveryimage001image001image001image001-
Internal backup and restoreimage001image001yesimage001VM snaphot
Power supplyExternalExternalExternalExternalVM snaphot
Size13 cm x 9 cm x 3 cm
13 cm x 9 cm x 3 cm
13 cm x 9 cm x 3 cm
1U-
SoftwareCompletePBX5 software, free upgrade under warranty / service agreementCompletePBX5 software, free upgrade under warranty / service agreementCompletePBX5 software, free upgrade under warranty / service agreementCompletePBX5 software, free upgrade under warranty / service agreementCompletePBX VM, available for VMware, Hyper-V and Oracle VirtualBox, free upgrade under warranty / service agreement