So much Access technology emerge now .EPON is a kind of better technology among them and one development trend of access network in the future, this text recommend EPON and prove weak point of it.

• 所以现今涌现出了不少接入技术，EPON则是其中的一种比较好的技术，并且是将来接入网的一个发展趋势，本文将介绍EPON并说明它的不足之处。