首页>
外国专利>
METHOD FOR TRANSMITTING A DIGITAL BROADBAND SIGNAL IN A TRIBUTARY UNIT CONCATENATION VIA A NETWORK OF A SYNCHRONOUS DIGITAL MULTIPLEX HIERARCHY
METHOD FOR TRANSMITTING A DIGITAL BROADBAND SIGNAL IN A TRIBUTARY UNIT CONCATENATION VIA A NETWORK OF A SYNCHRONOUS DIGITAL MULTIPLEX HIERARCHY
展开▼
机译:通过同步数字多重层次网络传输可疑单元连接中的数字宽带信号的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A pointer is allocated to the first tributary unit in a tributary group system for determining its position in the frame; the other tributary units receive a system indicator instead of a pointer. Each network node facility along a transmission link must recognise the tributary group system and forward its tributary units in the correct order. If a clock adaptation is required in the first tributary unit, a phase shift must also be initiated in all others. This requires hardware and software. This can be omitted if a pointer (PTR1 to PTR5) with the value of the positioning determination of the first tributary unit (TU-121) is allocated to all tributary units (TU-121 to TU-125) containing the broadband signal (DSa). The individual tributary units (TU-121 to TU-125) can then pass through the network node facilities independently of one another - if necessary with an individual phase shift (PS). At the receiving end, the tributary group system is restored after recognition of the pointers (PTR1 to PTR5) in that leading tributary units (TU-122, TU-125) are delayed by delay sections (L2, L5). IMAGE
展开▼