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CASE 5: IP PBX for SMB Office
SP5211
IP PBX ROBO
…
SMB Office
PSTN/GSM
PSTN/GSM
4*FXO
SP5004/S
VoIP FXS Gateway
SP5101
IP Phone
SP5054A/S
VoIP FXO Gateway
ISP/ITSP
Internet
Scale: 15 - 30 users
Extension: SP5211 controls SIP calls among the registered devices SP5101 and
SP5004/S (or other FXS gateway).
SIP Trunk: SP5211 registers to ISP/ITSP for inbound/outbound SIP calls.
PSTN Trunk (FXO): Company needs a representative PSTN number for customers
to call. If direct calling with PSTN number to VoIP network is not supported by
ISP/ITSP, FXO ports of SP5054A/S connect with PSTN lines and allow daily phone
calls from/to PSTN/GSM.
@London
@Paris
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