tailieunhanh - cisco avvid ip telephony phần 8

RSVP có một số vấn đề mở rộng quy mô riêng biệt mà làm cho nó nghi ngờ nó sẽ được thực hiện thành công trên một mạng lưới rất lớn, hoặc Internet cho rằng vấn đề, trong các lợi thế hiện tại của nónút trong mạng để phát hiện ra nếu nó là một phần của phiên RSVP tài nguyên reserved. | Designing and Implementing Single Site Solutions Chapter 10 339 Figure A Typical Small Site Traditional Data Network Figure A Typical Small Site Telephone Network Connection to the Carrier Traditional Telephones 340 Chapter 10 Designing and Implementing Single Site Solutions Therefore in order for this typical small site system to accommodate VoIP and AVVID solutions these two systems must first be merged onto a suitable network infrastructure. Today s typical data network uses category-5 twisted pair cabling as a minimum which easily supports voice and data this is a good start the LAN must also support moves adds and changes for Ethernet connectivity on a very easy-to-maintain network infrastructure. This means that for a period of time the two systems will remain apart and operate as parallel systems just like they did before all of this first started. As the merger of the two systems begins there is a distinct order to the migration as stated in the following 1. Connect the new AVVID-capable system to the external telco provider. 2. Install and configure supporting VoIP and AVVID systems onto the updated network. 3. Begin replacing the standard analog telephone devices with the new VoIP devices usually one at a time to ensure a smooth transition. Though these seem like three short steps it might take two weeks to complete them for 30 users. One of the most important aspects of small site VoIP solutions is to make certain the proper hardware is used the first time around so this critical capital expense is done only once. Having the proper LAN hardware also ensures that the installation and migration goes as smoothly as this migration completes the newVoIP system will look something like Figure . The forthcoming sections will help you understand how to perform this migration and how to create your very own new VoIP-capable network. For now you must understand that in Figure the solid lines are .