| 单词 | P-phone (Proprietary phone) |
| 释义 | P-phone (Proprietary phone) A proprietary voice terminal used with Centrex service, P-phones are proprietary to the central office (CO) switch manufacturer. P-phones are required for maximum ease of feature access, although most systems support generic sets, as well. 74570c16.qxd 9/11/07 12:27 PM Page 388 |
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