tailieunhanh - cisco avvid ip telephony phần 5

Quy hoạch sidebars, câu hỏi thường gặp, và các trường hợp nghiên cứu!Các khách hàng có thể nhận thức RSVP-quyền bảo lưu và được đảm bảo QoS tốt trên mạng cho chiều dài của đặt phòng, dài hay ngắn | DSPs Explained Chapter 6 183 Table Continued IOS Support VG200 2600 3620 3640 3660 NM-HDV 3 T 5 XK 1 7 t 5 XK 7 t 5 XK 7 t PVDM-12 3 T 5 XK 7 t 5 XK 7 T 5 XK 1 7 t The NM-HDV DSPs are utilized for incoming PSTN calls being converted into or VoIP are the calls coming in from the T1 or E1 circuit on the NM-HDV DSPs on the NM-HDV can support up to four voice calls per DSP. Sample Design Scenarios We will discuss two design scenarios and the requirements they are trying to meet. The first scenario is a medium sized branch office with no legacy PBX equipment. The second scenario is a large enterprise campus infrastructure with a legacy PBX and CallManager. The following examples should give you a better understanding of what type of solution may be applicable to your environment. These solutions are geared towards implementing a hardware-based DSP solution. If you are in a small environment using the features and capabilities of your CallManager may work for your situation. Branch Office If you are in a central branch office and your needs are to have an integrated and simplified solution the Catalyst 4000 switch with the AGM is an excellent choice. The Catalyst 4000 is a recommended solution for a branch office with connections to the PSTN and possibly an IP WAN circuit to another office. For example a branch office that has 175 employees with 140 IP phones and PCs in turn requires the ability to perform multiparticipant conferencing and transcoding. The transcoding is a requirement because they have some users running Microsoft NetMeeting with CODEC performing audio conferencing with IP phones. The Catalyst 4006 with a CallManager can provide all the needs for this branch office AGM running in IP telephony gateway mode will provide the DSP resources to allow conferencing and .