IP Telephony ppt

... -mode. .Hình 1: Các kết nối cơ bản với Cisco IP Phone Kết nối giữa IP phone và switch sẽ được điều chỉnh: bạn có thể cấu hình switch ra lệnh cho IP phones dùng dạng 802.1q trunk hoặc như là ... Cisco IP phones sẽ tạo ra một luồng dữ liệu cho voice (voice data stream). Thêm vào đó, nó cung cấp một

Ngày tải lên: 25/07/2014, 08:20

... to connect an IP phone? • What VLAN and IP addressing scheme should be used? • How is classification and queuing handled for Voice over IP (VoIP) flows on an IP phone? xv Cisco IP Telephony QoS ... an annual subscription. Contents xii Cisco IP Telephony QoS Design Guide 78-11549-01 Chapter 2 Connecting IP Phones Using a Single Cable to Install an IP Phone 2-6 Cisco I...

Ngày tải lên: 21/12/2013, 04:19

... b. False 42) This IP Telephony component is required for supplementary services between Cisco IP Phone and H.323 devices . a. CallManager b. MTP c. uOne d. IP Phone e. Gateway ... however, if fragmented on an IP interface w ith maximum transmission unit (MTU) reduction, the fragments remain for the life of the packet. a. True b. False 3) For IP Telephony...

Ngày tải lên: 18/01/2014, 05:20

... (Choose three). A. A detailed description of the IP header is always an option B. A detailed description of VOIP protocol is a always an option C. A detailed description of the TCP or UDP fields ... Q.76 Which of the switch configuration how an effect on IP Phone operation? A. portfast B. portspeed C. auxiliary VLAN D. SCOIP address Answer: Q.77 Which statements is true abo...

Ngày tải lên: 24/01/2014, 13:20

... OF CALL SETUP IN IP TELEPHONY FOR TESTS AND MEASUREMENTS1 In IP telephony, a call is usually established in multiple stages. In the first stage, an ingress or call-originating IP- PSTN GW is accessed. ... to exit from the loop when the required telephony event occurs. 164 AUTOMATION OF CALL SETUP IN IP TELEPHONY FOR TESTS For example, the placeCall.sbl script can be executed on a...

Ngày tải lên: 30/09/2013, 07:20

... IP TELEPHONY1 In IP telephony, a voice call is usually established through multiple stages. In the first stage, a phone number is dialed to reach a near-end or call-originating or ingress IP- telephony ... in IP telephony has been presented. In IP telephony, a call usually includes several stages. In the first stage, a phone number is dialed to reach a near-end (ingress call- o...

Ngày tải lên: 30/09/2013, 07:20

... Introduction Multiple Sites with Independent Call Processing 1-6 Cisco IP Telephony Network Design Guide 78-11103-03 Figure 1-3 Multiple Independent Sites V IP IP IP V IP IP IP V IP IP IP V IP IP IP PSTN 40765 ... A Telecommuter Site C Site B V V V IP WAN PSTN IP IP IP V IP IP IP V IP IP IP Site A Centralized Cisco CallManager cluster 40767 Cisco AVVID...

Ngày tải lên: 18/10/2013, 18:15

... suited to IP Telephony applications. Because IP Telephony is a data network application, all of the changes to the "Telephone System" will be handled through the software of the IP Telephony ... what needs to be done in order for their network to be more efficient and ready for IP Telephony. PBE for IP Telephony When KRONE originally invented Patch By Exception (...

Ngày tải lên: 19/10/2013, 12:15

... WAN PSTN Voice traffic Signaling Signaling Voice traffic IP IP IP IP IP V IP IP M M M V V ISDN backup IP WAN PSTN 74353 Contents ix Cisco IP Telephony Solution Reference Network Design Guide EDCS-197018 Cisco ... within the cluster and PSTN calls through the local gateway. IP IP IP IP IP IP ISDN backup PSTN IP WAN Cluster 74356 M M V V IP IP IP V Central site Bran...

Ngày tải lên: 26/10/2013, 23:15

... weaknesses against a concerted attack. 9 - 20 IP Routing – SANS GIAC LevelTwo ©2000, 2001 20 IP Route Options IP Address #1 IP Address #2 IP Address #3 IP Address #9 . . . code length ptr Codes 0x83 ... Routing • IP header is greater than 20 bytes • IP option field has a hexadecimal value of: 83: loose source routing 89: strict source routing ip[ 0] & 0xf > 5 and (ip...

Ngày tải lên: 10/12/2013, 15:15