cisco voice over ip cvoice authorized self study guide phần 1 pptx

. necessarily those of Cisco Systems, Inc. ii Authorized Self- Study Guide: Cisco Voice over IP (CVOICE) Foreword Cisco certification Self- Study Guides are excellent self- study resources for networking. 3 Routing Calls over Analog Voice Ports 12 6 Authorized Self- Study Guide: Cisco Voice over IP (CVOICE) V V PBX Gateway Gateway Dial: “555- 018 8” 555- 018 8 IP WAN Ring!! Figure 3 -1 Local Calls An. & Development Learning @Cisco June 2008 xviii Authorized Self- Study Guide: Cisco Voice over IP (CVOICE) Introduction With the rapid adoption of Voice over IP (VoIP), many telephony and data