MicroNet SP5001C Manuale Utente Scaricare il pdf (Pagina 27)

CASE 8: Integrating FXS Gateway with Legacy

PBX for SMB Office

SP5004P/SP5018A

VoIP FXS Gateway

with PSTN lifeline

8*PSTN

SMB Office

PSTN/GSM

8*FXS

Legacy PBX

ISP/ITSP

Internet

ISP/ITSP

Telephone

…

 Scale: 30 - 50 users (or more)

 Extension: Legacy PBX has control of extension calling as before.

 SIP Trunk: SP5004P/SP5018A connects legacy PBX via FXS ports, and

registers to ISP/ITSP for outbound calls.

 PSTN Trunk: PSTN ports of SP5004P/SP5018A are used for regular PSTN

inbound.

 PSTN Backup: In case of power failure, users can still make/receive calls via

PSTN lines.

@London

@Paris

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MicroNet SP5001C Manuale Utente Pagina 27