|
2712| 2
|
[技术讨论] 调制解调器为什么上下行速率不一至呢 |
|
| |
|
||
发表于 2005-6-21 19:45:00
书上说是上行要经过模数变换，而下行不用，看了很不明白，为什么从交换机到用户端不用模数转换呢？请高手指教，谢谢
手机版|C114 ( 沪ICP备12002291号-1 )|联系我们 |网站地图
GMT+8, 2024-5-29 08:46 , Processed in 0.079194 second(s), 15 queries , Gzip On.
Copyright © 1999-2023 C114 All Rights Reserved
|
2712| 2
|
[技术讨论] 调制解调器为什么上下行速率不一至呢 |
|
| |
|
|
||
手机版|C114 ( 沪ICP备12002291号-1 )|联系我们 |网站地图
GMT+8, 2024-5-29 08:46 , Processed in 0.079194 second(s), 15 queries , Gzip On.
Copyright © 1999-2023 C114 All Rights Reserved