已解决问题
是不是用GPON比用EPON更好一些呢?  (进入论坛模式)
提问者:abc_leo   |  提问时间:2009-6-15 09:40
都说EPON不稳定,技术不成熟,可用性还差,唯一的好处就是成本低廉,最后都是终端客户的麻烦,真的是这样的么?是不是用GPON比用EPON更好一些呢?
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EPON没有不稳定,技术不成熟吧。EPON对于数据业务传送还是挺好的,主要是语音业务兼容性差。GPON不管在传输距离、带宽、业务兼容性都比EPON好,但是由于初期价格不菲,所以没有规模使用,现在基本上都成熟了,价格也和EPON差不多了,运营商都考虑使用GPON了。
回应该答案 (1)  |  回答时间:2011-7-20 13:52
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222.66.195.*  |  2011-8-14 17:47
其实从建设模式看,EPON互通性较差,在FTTB模式场景中较好,而GPON的高带宽、1:128的分光比在功分PON上有通道代价优势,更适合FTTH或FTTO一、二级分光组网。
其他答案 ( 9 条 )


呵呵,其实任何技术都有瑕疵,IPV4这么多年不是还在用,任何东西只要规模化了一定有接近方案不管是自身演化还是打补丁,从个人了解的情况来看E还是满稳定的,至少没听说有什么断网之类的事情出现,当然国内用E/G的时间都还尚短有些故障可能还没出现,不够G也有其弊端啊。
个人看还是市场博弈,如果哪个的价格能突然下降,综合价格,建设和维护成本,哪个基本上就定了,呵呵
 |  回应该答案 (0)  |  回答者:sc8888   |  2009-6-15 09:43


不要听厂家的意见。他们要求的是利润最大化。就是说现在什么的利润大,就宣传什么,做什么。各个厂家都是一样的。建议看看华为技术。那个是个风向标。

现在全国这样大面积的推广pon技术,现在的用户体验都是很不错的。不过随着时间的推移,可能有些BUG就暴露出来了。但是从技术层面来说,应该没有什么太大的问题。PON技术是个不错的技术。成本等比以前的LAN以后肯定要低一些,而且网通和电信比较喜欢。
 |  回应该答案 (0)  |  回答者:坦克一号   |  2009-6-15 09:49
至少应该并行一段时间
EPON应该相对成熟
GPON技术上有优势,但发展在后
故EPON先行,GPON跟上的策略应该是正确的
向从根本上对决出来一种技术很难
影响因素很多,不仅仅是技术
 |  回应该答案 (0)  |  回答者:cdma1xdj   |  2009-6-15 10:34
[font=仿宋_GB2312][color=blue][size=4][b]我也来呱唧两句吧。目前,关于GPON和EPON的选择是争论很大的。GPON可以非常好地支持传统TDM业务,EPON通过使用CESoP(电路仿真)技术也可以很好地解决TDM支持问题。对于话音业务,目前的主流GPON芯片和EPON芯片均是采用VoIP方案,二者的支持能力相差无几。从技术上看GPON对TDM的支持更好,但目前因为出货量较小,其成本仍然很高。综合考虑,EPON技术仍然有性价比的优势。[/b][/size][/color][/font]

[[i] 本帖最后由 openeye00 于 2009-6-15 10:42 编辑 [/i]]
 |  回应该答案 (0)  |  回答者:openeye00   |  2009-6-15 10:39
GPON的技术好大家都认同,但实际的选择确实不只是技术问题,不过全球主流运营商都选择了GPON,全球主流设备商都支持了GPON,确是一个不争的事实。

韦总的讲话也指明运营商选择的思维“产业链的情况决定了技术的选择,GPON规模明年将超越EPON,2013年GPON规模是EPON的3倍”
 |  回应该答案 (0)  |  回答者:xjwlmq   |  2009-6-15 11:46
EPON不稳定,技术不成熟,可用性还差
有可能是指的初期EPON在使用中出现的语音问题让大家觉得不好用,中国国情决定了PON必须承载语音,前几年软交换确实又不成熟,ONU内置的IAD以及和上层配合容易出问题,就数据业务承载来说还是很成熟,只不过EPON商用靠前一点,就遇到这些问题,这是技术发展所不可避免的,数据业务再好,用户的电话总出现故障,当然要申告了
 |  回应该答案 (3)  |  回答者:hustblue   |  2009-6-15 11:58
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哈哈。实践中多总结。。总结中多改进。。。。重要的是这些步骤都是我们自己在实施。。。。
 |  回应该答案 (0)  |  回答者:lxffcc   |  2009-6-15 14:45
各有优劣,像你说的成本低廉也是一种优势,所以综合而言,不能说那个绝对好。
回应该答案 (0)  |  回答者:张延考   (技术员二级)  |  2011-7-20 13:42
EPON技术已成熟,而且运营商已大面积铺开使用,所以运营商不大可能使用GPON了。另外问一下,处理过期问题+5分是什么意思,这个问题是过期问题吗
回应该答案 (0)  |  回答者:shiru666   |  2011-8-4 12:09