Efficient VoIP Solution for env. of Technical University of Kosice
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The document discusses a thesis focused on enhancing the VoIP network at the Technical University of Košice (Tuke) by analyzing its current setup and proposing an integrated solution using SIP and ENUM protocols. The proposed solutions include connecting the VoIP network to the PSTN and enabling remote access for university employees, leading to improved service penetration and user experience. Future directions for the VoIP network include research on security protocols and the integration of unified communications.
Efficient VoIP Solution for env. of Technical University of Kosice
- 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
- 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