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Gateway and Trunk Concepts

Gateway and Trunk Concepts

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Gateway and Trunk Concepts

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  1. Gateway and Trunk Concepts Chapter 07

  2. The Process of Converting Voice to Packet 0

  3. Encoding Voice into Binary mu-law 0 0 1 0 0 1 1 0 is a positive value 1 1 1 0 0 1 0 1 is a negative value

  4. Choosing a Voice Codec

  5. http://www.cisco.com/en/US/prod/collateral/modules/ps3115/ps6024/http://www.cisco.com/en/US/prod/collateral/modules/ps3115/ps6024/ prod_qas0900aecd8016c6ad_ps3115_Products_Q_and_A_Item.html

  6. RTP and RTCP • Real-time Transport Protocol • Sequence numbers • Time stamps • Real-time Transport Control Protocol • Packet count • Packet delay • Packet loss • Jitter (delay variations)

  7. Trunking CME to the PSTN

  8. Trunking CME to Other VoIP Systems

  9. H.323 • The first VoIP

  10. SIP • Session Initation Protocol • NEXT Generation of H.323

  11. MGCP • Media Gateway Control Protocol • First true client/server VoIP signaling protocol • “Call agent” • Not as widely supported as H.323 or SIP

  12. SCCP • Skinny Client Control Protocol • Only Cisco proprietary protocol in use today • Its function is to provide signaling between the Cisco Unified Communication Manager and the Cisco IP phones

  13. ITSP (Internet Telephony Service Providers) • Vonage • Verizon • at&t • Ooma

  14. VoIP ISP in USA (sample list) • Best • X-Voice • Magic Jack • Nextiva • Avaya • Lingo • Zimbio • NEC • Ooma • 8x8 • Talk Switch • Cisco • ShoreTel • Intalk • Viatalk • VoIP.com • ITP • Vonage

  15. Configuring and Verifying Gateway and Trunk Chapter 08

  16. Configuring Analog Ports • FXS • FXO

  17. FXS Foreign Exchange Station Ports • Signaling types • Ground start • Loop start

  18. FXO Foreign Exchange Office

  19. Configuring Digital Voice Ports • T1 CAS PSTN interfaces • T1 CCS PSTN interfaces • PBXs use E&M • CAS typically uses loop start

  20. Configuring a T1 CAS PSTN Interface • Turn to page 253

  21. Configuring a T1 CCS PSTN Interface • Turn to page 257

  22. Dial Peers (POTS & VoIP Dial Peers)

  23. Voice Call Legs

  24. Configuring POTS Dial Peers