Hi Jason, There are a couple of boxes on the market these days that
have the following ports: FXO/ISDN line out to PSTN 2 - FXS - analogue phone (or fax) WAN port for DSL As well as wfifi. Fritz WLAN FON box for example. Quick design: Asterisk server at HQ. Each remote employee has one of these
boxes. Calls in go to Asterisk, and get forwarded via VOIP to a
phone registered via SIP from one of the FRITZ boxes. If there is no SIP
registration, the call could be redirected back out to the PSTN. Calls from an
employee could go out either Asterisk or the PSTN based on dialplan. You would
need either two FXO ports on the Asterisk (or one ISDN port). All the rest, voicemail, recording, time of day changes,
etc. can all be done in Asterisk. Good luck, Joe Joseph Rothstein, CCIE Senior Network Engineer Comcentrixs
GmbH Landsberger Str. 155 /
House 2 D-80687 Office: +49 (0) 89 2444
3168 - 212 Softphone: +49 (0) 89
2444 3168 - 8451 Fax: +49 (0) 89 2444 3168
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