Phone System 2

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This article is just a stub at the moment, rather a scratchpad for ideas ;-)

Topology[Bearbeiten]

--- ISDN --- Fritz!Box --- DECT Handsets / Repeaters
                 |
            SIP Server --- User handsets

Features[Bearbeiten]

  • Every (smarphone-)user can register their account at a (LAN-only) website
  • SIP Client + Smartphone = Free (landline) calls via the Labor phone system
  • Inbound calls to specific users via Menu / special number
  • Automatic deletion for inactive accounts after 24 months
  • Announcements to all rooms (speakers) via internal number
  • Direct user-to-user calls

Numbers[Bearbeiten]

From internal[Bearbeiten]

 0          Landline
 11{0,2}    Emergency numbers
 
 2000..7999 User numbers
 
 8XXX       RFU
 
 9000       Announcement (all rooms)
 900X       Announcement X: 1 = Basement, 2 = Lounge/Workshop/Lecture Rooms
 93246      Echo test (9-E-C-H-O)
 9...       Other funny things, who knows... ;-)

From External[Bearbeiten]

  • 0234 7941989: All phones / Users
  • 0234 7941999 and 0234 7941990: User-selection menue. Outbound calls from SIP clients will be signalled with one of these numbers.