| 主題：ST意法半導體之寬頻多媒體解決方案 |
| 在线问答： |
| [问：gpslon] |
请教：在MP4上具体应用如何定型，谢谢！ |
| [答：Khee-leong] |
We foresee the the IP-setup BOX with MP4 feature will be on a separate
box. The MP4 video streams will go through Ethernet connection
via the broadband modem, then to the TV sets for Video On Demand services
etc. |
[2005-9-6 10:31:33] |
| [问：alrale] |
请问：这个系统的大致使用范围和适用参数？ |
| [答：Helen] |
This platform is for multiple function integrated CPE. I don"t quite
understand what do you mean by "適用參數"?? |
[2005-9-6 10:31:42] |
| [问：tlyangbenq] |
ST20190是否真正实现了G.992.3和G.992.5标准所规定的全部内容? |
| [答：Helen] |
Yes. |
[2005-9-6 10:32:05] |
| [问：lameima520] |
CPE的性能如何?它的消费群如何? |
| [答：Helen] |
Triple play is designed for multiple function, high-end market. |
[2005-9-6 10:35:01] |
| [问：greg828] |
ST的ADSL2+晶片組的價格如何? |
| [答：Helen] |
Please contact with our local office for quotation. |
[2005-9-6 10:35:37] |
| [问：greg828] |
ST的ADSL2+晶片組能否滿足下載DVD或電影的需求? |
| [答：Helen] |
Yes. ST20190 is designed for high-end market including the demand for
video streaming. |
[2005-9-6 10:36:49] |
| [问：tlyangbenq] |
据我所知,ADSL2+在QoS上的性能不是很好,ST公司如何用ST20190解决三重播放的问题?还是要推出新的芯片? |
| [答：Khee-leong] |
We believe the QoS is good with external dedicated Network Processor. ST20190
solution takes care of the ADSL2+ with ATM layer connection. The
External Network processor, without the need to take care of ADSL2+ connection,
will then have the full CPU bandwidth to process data, voice and video. With
that QoS can be guaranteed. |
[2005-9-6 10:36:59] |
| [问：owen_lfl] |
ADSL 断线是很多ADSL moden /Router 在终端客户中出现的问题最频繁？
请问ST 使用INP的是如何实现的避免这个问题？ |
| [答：MB] |
It can happen due to two reasons. One reason is due to poor line conditions.
This case is taken care in the adsl2 by SRA which can adjust the line
rate based on line conditions. The other reason could be the interoperability
issue with central office equipment. Our solution has been tested with
all popular solutions available today and ensured it works well. We are
doing this frequently to ensure the stability and interoperability of
our product in the field. |
[2005-9-6 10:38:00] |
| [问：greg828] |
ST能否提供詳細的參考設計資料? |
| [答：Helen] |
Yes, please contact with ST"s local office. |
[2005-9-6 10:38:59] |
| [问：wuzizaixian] |
violin 中的FIFO的容量 |
| [答：MB] |
What is mean by FIFO in Violin ? The question is not clear. |
[2005-9-6 10:39:14] |
| [问：sllin11] |
ADSL2+的下行和上行数据传输速度能达到多高?传输距离有多远? |
| [答：Aeolus] |
Downsteam rate can reach 24 Mbps and upsteam rate can reach 1.2 Mbps,
it can reach 21 Kft in Annex L specification. |
[2005-9-6 10:39:47] |
| [问：ty010496] |
希望購買一套開發系統和評估板，以及開發過程，請告訴我，在北京什麽地方可以買到和進行技術咨詢? |
| [答：Helen] |
Please contact with ST"s BJ office. |
[2005-9-6 10:39:52] |
| [问：greg828] |
經過壓縮後,IPTV的接入最低需要多寬的帶寬? |
| [答：MB] |
It depends on the type of encoder used. |
[2005-9-6 10:40:07] |
| [问：greg828] |
ADSL常有”断流”现象出现,ADSL2+在传输连接可靠性和ADSL相比,有何特点?能否避免”断流” |
| [答：Khee-leong] |
There are specific features on ADSL2+ like the impulse noise protection,
Seamless Rate Adaptation which will adapt better to the real world phone
line condition to maintain the ADSL broadbank link without interrruption
or retraining. |
[2005-9-6 10:40:35] |
| [问：xiang99] |
How does the whole system to ensure the priority
of the video and voice traffic? |
| [答：MB] |
We have QoS implementation for Video on ATM and Ethernet
level to ensure the priority. |
[2005-9-6 10:41:19] |
| [问：ty010496] |
晶片的功耗如何?怎樣解決過大電流造成功耗過大而引起晶片溫度過高的問題呢? |
| [答：Khee-leong] |
Simple design rules on PCB layout (eg ground plan on bottom of IC) is
sufficient to handle the heat dissipation from ST20190 chipset. There
is no need for complex heat dissipation solution for ST chipset. |
[2005-9-6 10:43:04] |
| [问：percy_wang] |
请预测一下未来宽带多媒体发展的趋势，技术上会有哪些问题还需要解决？ |
| [答：Aeolus] |
The Video and Audio services need QoS to provide better support. You
can image there will be a lot of applications in Video and Audio in broadband
service, ex. VoD (Video on demand) VOIP and Video phone... etc. |
[2005-9-6 10:43:24] |
| [问：hugoshiuaa] |
ST能提供什麽樣的技術支援? |
| [答：Helen] |
We provide the technical support to our design-in customers. Please
contact with ST"s local office for details. |
[2005-9-6 10:43:30] |
| [问：tlyangbenq] |
ADSL2+能否做到和第一代的ADSL技术互通或兼容问题?除了速度低,第一代能否也能接入? |
| [答：Helen] |
Yes, ADSL2+ is totally backward compatible with ADSL. |
[2005-9-6 10:43:56] |
| [问：hugoshiuaa] |
如何獲得DEMO板和技術支援資訊？ |
| [答：Helen] |
Please contact with ST"s local office for details. |
[2005-9-6 10:44:07] |
| [问：greg828] |
ST20190在何處選擇使用外部的PHY還是內部的PHY? |
| [答：Khee-leong] |
ST20190 has the Utopia interface to connect to external Network Processor. No
ethernet PHY connection is needed from ST20190 chipset. So
the selection of ethernet PHY depends on the external network processor. |
[2005-9-6 10:44:52] |
| [问：ty010496] |
在降功耗方面, ST20190有何具體方法?是否採用功率動態管理? |
| [答：Helen] |
Yes, power management (L0-L2) is supported by ST20190. |
[2005-9-6 10:45:35] |
| [问：cdneko] |
产品设计可以根据功能需求选择CPU等级，即是说ST20190架构可以自定义CPU性能？ |
| [答：Helen] |
The grade of CPU is decided by the end product functionalities. That
means, if the end product (modem) needs to support more functions, it
requires more powerful CPUs. |
[2005-9-6 10:46:26] |
| [问：tongxunshe2002] |
贵公司的新方案与现有技术比较有何种优势？
还有那些未解决的问题？
贵公司下一步发展计划如何？ |
| [答：Khee-leong] |
ST20190 has the advantage of achieving real throughput from ADSL2+ connection
with external network processor. Efforts are also spent on
shrinking the device (for more cost effectiveness) as well as on VDSL
domain to increase the broadband bandwidth. |
[2005-9-6 10:48:20] |
| [问：m9002008] |
要是採用ST的方案實現IPTV,需要許可證費用嗎？要是有,大概是什麽價格？ |
| [答：Helen] |
I don"t quite understand your question. Please contact with ST"s local
office for details. |
[2005-9-6 10:48:41] |
| [问：tlyangbenq] |
有人说, VDSL2是三重播放的更佳选择,您们认同吗?是否真的是这样? |
| [答：Aeolus] |
VDSL2 is the next generation of xDSL technology, and it can support
more features to adapt to different applications. |
[2005-9-6 10:49:59] |
| [问：ty010496] |
請問ST的ADSL2+晶片組在乙太網的接入開發中或組成Modem，最主要應該注意那些問題？ |
| [答：MB] |
Are you talking about hardware and software point of view. You can get
all technical information and support from ST office if you are considering
to build modem based on this solution. |
[2005-9-6 10:50:19] |
| [问：owen_lfl] |
ADSL2+ 具体是什么意思？ 它与之前的ADSL 有什么差别？ |
| [答：Aeolus] |
ADSL2+ is G.992.5 and ADSL is G.992.1, it can support more features
and higher rate than G.992.1 to improve connection quality and adapt more
applications. |
[2005-9-6 10:52:33] |
| [问：ty010496] |
ADSL2+是否还需要话音分离器?它和ADSL的一样吗? |
| [答：Aeolus] |
Yes, you are right. |
[2005-9-6 10:53:03] |
| [问：fwdelta] |
IPTV中單盒和雙盒方案在性能和成本上有何優缺點? |
| [答：Helen] |
Two-box model is definitely more costly than single-box model. However,
it also limits user"s application and usage habbit so it"s a trade-off
that needs to be taken into consideration. |
[2005-9-6 10:53:38] |
| [问：hugoshiuaa] |
ADSL2+能否實現VoIP?如何降低VoIP的噪音或使電話清晰? |
| [答：MB] |
Yes. ADSL2+ has nothing to do wrong with VoIP. The clarity of the voice
call depends on several factors like QoS implemented, echo canceller,
jitter buffer management, quality of slic and codec etc. |
[2005-9-6 10:53:42] |
| [问：sllin11] |
ADSL2+和ST的动力线上网相比,有何优势?生命周期有多长? |
| [答：Khee-leong] |
ST20190 ADSL2+ chipset is targeting at the growing market on IAD, not
just a simple modem only on data connection. We predict more
and more modems will include triple play features. The ST ST20190
chipset is specifically suitable for this type of market. The
life span of this device is hard to predict as we are in the beginning
of ADSL2+ revoluation in terms of real-world ADSL2+ deployment by the
telco. |
[2005-9-6 10:54:27] |
| [问：owen_lfl] |
ST 的ADSL 断线后重新连线的机制是怎样？ |
| [答：Aeolus] |
If you set auto-connect in application layer, it will re-connect automatically. |
[2005-9-6 10:54:46] |
| [问：m9002008] |
ADSL網路繁忙的時候語音質量會下降,ADSL2+有無這方面的問題？能解決嗎? |
| [答：Helen] |
As long as the proper QoS is implemented to make sure the voice packet
has the proper priority, the problem can be controlled. |
[2005-9-6 10:54:53] |
| [问：yilei] |
现在能否提供stb7100/stb7109的样片 |
| [答：Helen] |
The sample for 7100 will be available in the end of Sept and 7109 is
scheduled for Q1, "06. |
[2005-9-6 10:55:33] |
| [问：m9002008] |
ST的ADSL2+方案的總體成本是多少？硬體的價格有多少?軟體是不是免費提供？ |
| [答：Helen] |
Please contact with ST"s local office. |
[2005-9-6 10:55:51] |
| [问：jasonfuaa] |
G.992.3/5語音編碼在ADSL2+網路有無時延和抖動？如何應對? |
| [答：Khee-leong] |
G.992.3/5 has very flexible TC/TPS interleave delay configuration from
1ms to maximum of 63ms delay. Configure 1ms delay for connection
that need minimum delay and increase this delay for connection that required
more robust impulse noise protection. |
[2005-9-6 10:58:01] |
| [问：gpslon] |
符合新蓝牙规范的芯片是哪些，谢谢！ |
| [答：Helen] |
ST2500B supports class1 bluetooth. |
[2005-9-6 10:58:23] |
| [问：jasonfuaa] |
ADSL2+配置成IPTV功能或語音,資料和視頻三重播放,還需要那些器件? |
| [答：MB] |
I am not very clear the configuration means on the board or outside.
If it is on the board, you need slic and codec for VoIP, Ethernet interface
for data and setTop box device for Video output. External components are
Analog phone, PC, and TV |
