telecoms telecom.

[Tasimizu]

Пожалуйста, помогите перевести:
a CL mode of operation,circuit switches

Выражение встречается в следующем контексте:
With a LAN such as Ethernet, there is inherently a CL mode of operation while PDXs are circuit switches. It is likely that if PDXs are incorporated in to such a LAN environment they will be used to interconnect LAN segments.
Заранее огромное спасибо!

[alk]

Из текста
http://www.cs.ucl.ac.uk/staff/S.Bhatti/D51-notes/node48.html
However, as people realise the need for integration of services such as data, voice and video, increasing number of PABXs are being produced that employ digital switching techniques, capable of switching data, as well as voice and video that has undergone analogue to digital conversion (ADC). Such PABXs are also know as private digital exchanges (PDXs).

Становится ясно, что switch(ing) - это коммутатор, коммутация и т.д.
По поводу Cl mode см. RFC 1161 (RFC1161) SNMP over OSI
Cl- connectionless
http://www.citforum.ru/nets/glossary/c_terms.shtml