| 单词 | N-ISDN (Narrowband ISDN) |
| 释义 | N-ISDN (Narrowband ISDN) In the terminology of the integrated services digital network (ISDN), narrowband refers to bandwidth at the level of DS-1 or less. According to North American standards, a 74570c14.qxd 9/11/07 12:26 PM Page 337 |
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