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SERDES (SERializer/DESerializer) è un' interfaccia elettrica costituita da due di blocchi funzionali utilizzati in sistemi di comunicazione ad alta velocità con un numero limitato di input/output.
'''TR-069''' (short for Technical Report 069) is a [[DSL Forum]] (which was later renamed as [[Broadband Forum]]) technical specification entitled ''[[Customer-premises equipment|CPE]] [[Wide area network|WAN]] Management Protocol'' (CWMP). It defines an [[application layer]] protocol for remote management of end-user devices.
I suddetti blocchi convertono i dati da seriali a paralleli e viceversa in ambedue le direzioni.
Il termine SERDES à genericamente utilizzato in un gran numero di tecnologie e applicazioni, anche se tipicamente il mondo a cui ci si riferisce è quello delle telecomunicazioni.
== Funzionalità ==
As a
Le funzionalità base di una interfaccia SERDES sono espletate da due blocchi funzionali:
bidirectional [[SOAP]]/[[HTTP]] based protocol it provides the communication
# Convertitore Parallelo-Seriale ([[PISO]])
between [[customer-premises equipment]] (CPE) and Auto Configuration Servers (ACS). It includes both a
# Convertitore Seriale-Parallelo ([[SIPO]])
safe auto configuration and the control of other CPE management
functions within an integrated framework. In the course of the boom of
the broadband market, the number of different Internet access
possibilities grew as well (e.g. [[modem]]s, [[router]]s, [[Gateway (computer networking)|gateway]]s, [[set-top box]],
[[VoIP]]-[[phone]]s). At the same time the configuration of this equipment
became more complicated -- too complicated for the end-users. For this reason
the TR-069 standard was developed. It provides the possibility of
auto configuration of these access types. The technical specifications
are managed and published by the [[Broadband Forum]]. Using TR-069 the terminals can
get in contact with the Auto Configuration Servers (ACS) and establish the
configuration automatically. Accordingly other service functions
can be provided. TR-069 is the current standard for activation of
terminals in the range of DSL broadband market.
Other fora, such as the [[Home Gateway Initiative]] (HGI) and [[Digital Video Broadcasting]] (DVB), are endorsing CWMP as the protocol for remote management of home network devices (e.g. the HGI gateway) and terminals (e.g. the DVB [[IPTV]] set-top box)
Inoltre esistono quattro tipi di architettura SERDES:
There is a growing trend to add TR-069 management functionality to home networking devices such as powerline adapters<ref>[http://blog.ds2.es/ds2blog/2009/05/tr069-management-iptv-powerline-networks.html Using TR-069 to manage powerline ethernet adapters in IPTV home networks]</ref> used for distribution of IPTV content inside customer premises, as well as many other access devices like FTTH CPE/ONTs and other carrier access equipment
# Parallel clock SerDes
[[Image:Remote CPE Controle via TR-069.jpg]]
# Embedded clock SerDes
# 8b/10b SerDes
# Bit interleaved SerDes.
Il blocco [[PISO]] (Parallel Input, Serial Output) tipicamente è composto da in clock di ingresso, una serie di linee di input e del [[latch]] in uscita. Può, inoltre, utilizzare un [[PLL]] (Phase-locked loop) per moltiplicare il clock entrante fino al di sopra della frequenza della trasmissione seriale.
== Functions supported by TR-069 ==
Nella sua forma più elementare il PISO è comosto da un registro a scorrimento ([[Shift register]]) che riceve i dati in ingresso sincronizzati con il clock e li trasmette a scorrimento verso l'uscita alla velocità definita dal clock seriale. Alcune implementazioni possono avvalersi di un registro a doppia bufferizzazione.
== Note ==
*Autoconfiguration and dynamic service activation
Questa è una prova.
**initial CPE configuration**
== Riferimenti ==
**remote CPE configuration
== Collegamenti esterni ==
*firmware management
**version management
**update management
*status and performance control
**logfile analysis and dynamic messages
**diagnostics
**connectivity and service control.
In the future TR-069 will control many additional options of the CPEs additionally to the pure standards for activation:
*enquiry of the equipment functions
*enquiry of information, diagnostics, status and capacity
*automatic process-controlled alarm
*irrespective gateway data model, in access with TR-064 it is upgradeable with secondary equipment and functions
==External links==
*[http://www.broadband-forum.org/technical/download/TR-069_Amendment-2.pdf TR-069 Amendment 2] CPE WAN Management Protocol v1.1 (Release 3.0)
*[http://www.broadband-forum.org/cwmp.php] CWMP XML Schemas and Data Model Definitions
*[http://www.iol.unh.edu/services/testing/dsl/training/#Tutorials_TR_069_crash_course] Detailed tutorial on CWMP and related documents
==References==
{{reflist}}
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