| 摘要 |
PCT No. PCT/GB91/01952 Sec. 371 Date Jul. 1, 1993 Sec. 102(e) Date Jul. 1, 1992 PCT Filed Nov. 6, 1991 PCT Pub. No. WO92/10896 PCT Pub. Date Jun. 25, 1992.A monitoring device detects late packet collision on a CSMA/CD LAN. The device comprises a first detector for detecting the presence of a packet in the LAN, a second detector for detecting the occurrence of a packet collision in the LAN and a late collision indicator which provides a late collision indication whenever the second detector detects the occurrence of a collision more than a predetermined time after the first detector detects the presence of a packet.
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