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. If you have any questions, the best way to contact me is through Twitter at @aconaway.

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