• Save
Efficient VoIP Solution for env. of Technical University of Kosice
Upcoming SlideShare
Loading in...5
×

Like this? Share it with your network

Share

Efficient VoIP Solution for env. of Technical University of Kosice

  • 1,192 views
Uploaded on

Diploma Thesis with aims on creating a scalable VoIP solution for the environment of Technical University of Kosice

Diploma Thesis with aims on creating a scalable VoIP solution for the environment of Technical University of Kosice

More in: Technology , Business
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
1,192
On Slideshare
1,186
From Embeds
6
Number of Embeds
3

Actions

Shares
Downloads
0
Comments
0
Likes
0

Embeds 6

http://www.linkedin.com 3
https://www.linkedin.com 2
http://www.slideshare.net 1

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. Efficient VoIP Solution for the Environment of the Technical University of Kosice Author: Jozef Janitor Supervisor : Ing. Frantisek Jakab, PhD. Consultant : Ing. Frantisek Jakab, PhD.
  • 2. Overview
    • Goals of the Thesis
    • Topic analysis
    • Proposed and integrated solution
    • Conclusion and paths for the future
  • 3. Abstract
    • “ Current IP data networks have evolved from data only networks to networks that can also carry realtime voice and video with required quality, reliability and security.”
    • “ VoIP is a technology that enables voice communication over IP data networks”
  • 4. Goals of the Thesis
    • Analyze the existing situation of the VoIP network at TUKE
    • Extend the actual usability of the VoIP network with SIP and ENUM protocols
    • Cross connect the VoIP network with the university PSTN telephone network
    • Create a solution for connecting university employees to the VoIP network from remote locations
  • 5. Analysis of VoIP at TUKE
    • SANET VoIP Phase #1
    • Year 2004
  • 6. Analysis of VoIP na TUKE (cont.)
  • 7. Analysis of VoIP at TUKE (cont.)
    • Cisco Call Manager 4.0
    • Cisco IP Phones – 7940s
    • Manual Call Routing Setup
    • NAT/PAT/Firewall issues
      • No remote workers with IP Phones
    • No connection to PSTN/TUKE tele. net.
      • +421-55-602-7XXX reserved for VoIP
    • Small VoIP service penetration
  • 8. Proposed and Integrated Solution
    • SIP Protocol Integration
      • SIP is a de-facto standard nowadays for VoIP
    • Simplifying Voice Call Routing
      • ENUM
      • Central Voice Routing Point
    • Firewalls, NAT/PAT
      • Session Border Controller
      • VPN
  • 9. Solution Proposal (cont.)
    • Connecting the VoIP network to the PSTN network and TUKE telephony network
      • Cisco Voice Gateway with digital E1 interface
    • Addon Services for End Users
      • Yellow pages for Cisco IP Phones
      • Caller ID Identification
  • 10. SIP Protocol Integration
    • DNS Delegation for SIP Voice Domain
      • sip:cnl.tuke.sk
    • Sip Express Router Installation
      • Open Source Application @ Linux
      • Provides SIP Services
      • Registers SIP Users
        • Better service penetration
      • Trunk to Cisco Call Manager
  • 11. Call Routing
    • ENUM as an Exterior Call Routing Protocol
      • Registration to the global ENUM DNS tree
        • TUKE phones are now reachable in ENUM
      • SER configured for ENUM lookups
      • Private ENUM tree (e164.cnl.tuke.sk)
    • SER for Interior Call Routing
      • Integrated Voice Routing
  • 12. Firewall, NAT/PAT traversal
    • STUN protocol
    • VPNs
      • High costs
    • Cisco IOS IP2IP GW
      • Difficult Voice Routing Logic
      • Lack of advanced NAT detection features
    • SER configured to provide SBC services
      • Traversal issues detected at first levels
      • SBC usage only when needed
  • 13. Crossconnecting VoIP with PSTN
    • Cisco 3725 Router
      • Voice Gateway
      • Digital E1 trunk
        • 30 voice channels
      • Connected to a Panasonic PBX
      • Numbering Plan changes at TUKE PBXs
        • Adding 7XXX extensions reachability
  • 14. TCL Clip Service
  • 15. Yellow Pages
    • TUKE Yellow Pages
      • XML application for Cisco IP phones
  • 16. Final Architecture
  • 17. Outcomes and Results (cont.)
    • Easy new sites integration
    • Student’s dormitory:
  • 18. Conclusion
    • ~ 100 SIP VoIP numbers were created and assigned to users of TUKE
    • TUKE VoIP reachable from ENUM
    • TUKE VoIP reachable from PSTN too
    • VoIP calls from remote networks (NAT/PAT) are handled by the SBC
    • Voice Call Routing made simple
    • End Users appreciated addon services
  • 19. Future paths
    • Network homogenization
      • Single vendor
    • VoIP Security protocols research and integration
    • VoIP Protocols compatibility research
    • Unified Communications