IIUC Notes – VoIP Structures

Feel free to correct.  No need to sugar-coat it; I’m pretty new at this stuff.  🙂

  • Advantages of VoIP
    • Reduces costs of communications:  Eliminates/reduces long distance and international call tolls
    • Reduces costs of cabling:  No need for second network of phone lines
    • Integrates all voice into one large network:  All your remote offices can be implemented/maintained/controlled centrally
    • Provides mobility:  Moves, adds, and changes (MACs) are (nearly) eliminated since your phone is just a network node
    • Allows use of IP Softphones
    • Unifies emails, voice mails, and faxes:  All these can be treated as a single box for user messages
    • Increases productivity:  Ringing multiple devices at the same time eliminates phone tag.   <— pushing it, eh?
    • Enhances communications:  Applications can be launched/updated from a voice call through application servers
    • Provides open, compatible standards:  You can connect different vendor devices into the same VoIP network.   <— I’ve never seen that happen
  • Cisco VoIP Structure
    • Infrastructure:  Switches, routers, firewalls, etc.
      • QoS!
    • Call processing:  Call signaling, routing, etc.
    • Applications:  Additional functionality like IM support and unified messaging
    • Endpoints:  Phones
  • Cisco Call Processing
    • Unified Communications 500 (UC500): Standalone device with switch, router, firewall, voice processing, voice mail all built in
    • Communications Manager Express (CME):  Voice capabilities contained in ISR router
    • Communications Manager Business Edition:  Server solution with most voice capabilities integrated
    • Communications Manager (CM): Full server-cluster solution to support many thousands of phones
  • Cisco Applications
    • Interactive Voice Response (IVR):  Those troublesome menus where you say your account number but it never understands you
    • Auto attendant:  Interactive interface where users direct themselves to the correct person/group/team/department by using touch tones.
    • Cisco Unified Contact Center:  Provides IVR, auto attendant, automatic call distribution (ACD), computer telephony integration (CTI), chat/web/email integration
    • Cisco Unity Express:  Linux-based appliance in a router for limited voice mail, IVR, and auto attendant
    • Cisco Unity Connection:  Server-based solution for more robust VM, IVR, and auto attendant
    • Cisco Unity:  Fully-integrated solution running on server clusters
  • Phones
    • Entry-level
      • 3911
        • Inline power
        • Fixed buttons
        • Half-duplex speakerphone
      • 7906G/7911G
        • Inline power
        • Onscreen soft keys
        • Basic XML support
        • 7911G has built-in switch
      • 7931G
        • Inline power
        • Onscreen soft keys
        • Basic XML support
        • Built-in switch
    • Business-class
      • 7940G
        • Built-in switch
        • Inline power
        • Broader XML support
        • Onscreen soft keys
        • Full-duplex speaker
        • Headset support
      • 7941G = 7940G + better display with backlight
      • 7941G-GE = 7941G + 10/100/1000 switch
      • 7942G = 7941G + high-fidelity audio and Internet Low Bitrate Codec (ILBC)]
      • 7945G = 7941G-GE + 16-bit color display
      • 794X phones support 2 lines; the same 796X phones support 6 lines.
    • Touchscreen phones
      • 7970G:  7940G + touchscreen
      • 7971G-GE: 7941G-GE + touchscreen
      • 7975G: 7945G + touchscreen + 5″ display
    • Specialty phones
      • 7985G:  Video phone
      • 7921G:  Wireless VoIP phone
      • 7937G:  Conference station
      • ATA 186/188:  Converts analog phones to VoIP
      • Cisco IP Communicator:  Softphone
      • VT Advantage:  Integrates webcam and computer with phone
      • 7914/7915/7916:  Expansion modules for 796X and 797X phones

Aaron Conaway

I shake my head around sometimes and see what falls out. That's what lands on these pages.

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