Network termination, e.g. NT1, NT2, PBX

Full Title

Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07 > Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH > User Network Interface > Network termination, e.g. NT1, NT2, PBX