In the IP business side of high-powered, broadband, DWDM equipment price is higher, be in in when distance of net of small town artery is shorter, the advantage that sexual price compares is not clear. And because a lot of province artery nets are built early, use the STM-16 technology design of SDH mostly, use IPoverSDH technology, invest scarce effect fast and line utilization rate is high. Consequently current and character, expand high-powered IP business, IPoverSDH is better choice.
1, the advantage of IPoverSDH technology
Although at present IP receives what use into network place,enter a technology varied, but the transmission network that needs to have high reliability from beginning to end undertakes bearing the weight of.