English to Russian Tech/Engineering Telecom(munications)

Пограничный контроллер сеансов для оптических сетей

2. Dynamic access control.

The ACL’s are enforced in the network processing hardware subsystem, guaranteeing that only authorized sources are allowed service access to the session signaling layer and eliminating the possibility of a DoS attack from untrusted sources. Dynamic access control refers to the call-by-call establishment of media “pinholes” (or NAPT bindings) and bandwidth policing policies which are enforced on flow-by-flow basis.

здесь media - медиапоток