Waiting for your opinion Guys!

The ATN and PTN devices are two bearer technical solutions. An ATN device transmits packets using Multiprotocol Label Switching (MPLS), and a PTN device using MPLS-Transport Profile (MPLS-TP). You can select either the ATN for a router-connected mobile backhaul network or the PTN for an SDH mobile backhaul network based on network conditions and O&M preference.
An IP/MPLS ATN network runs dynamic routing protocols to generate routes, which facilitates service expansions. Such a network requires highly competent engineers who have a profound understanding of IP protocols.
An MPLS-TP PTN network uses a powerful NMS to automatically calculate routes and perform service cutovers and expansions on the visualized NMS interface, without using command lines. The visulized NMS allows you to browse service forwarding paths and locate faulty points based on fault information.

The ATN and PTN devices are two bearer technical solutions. An ATN device transmits packets using Multiprotocol Label Switching (MPLS), and a PTN device using MPLS-Transport Profile (MPLS-TP). You can select either the ATN for a router-connected mobile backhaul network or the PTN for an SDH mobile backhaul network based on network conditions and O&M preference.
An IP/MPLS ATN network runs dynamic routing protocols to generate routes, which facilitates service expansions. Such a network requires highly competent engineers who have a profound understanding of IP protocols.
An MPLS-TP PTN network uses a powerful NMS to automatically calculate routes and perform service cutovers and expansions on the visualized NMS interface, without using command lines. The visulized NMS allows you to browse service forwarding paths and locate faulty points based on fault information.

w00103028 Posted on 2014-05-31 14:15

Good to know

Thanks a lot for your reply! it?s a good point of view!

The debate is very interesting, according to my own experience on mobile transport, it is not question of who is right and who is wrong

Both can and must be used, ATN generally bring MPLS features to the edge or near or until the cell site

PTN is pure layer 2, yes expansion is complicated if done lby  local configuration

But can be done also by NMS, easier and scalable.

The questions to ask before:

Do I really need MPLS to the celle site? If not PTN layer is OK, if yes => your are in case of need of IP layer 3 VPN services for some B2B users , LTE X2 interface ..for example, then ATN is needed.

What is  the demarcation point of L2 and L3: this limit is the key, and where do I want to set this limit? I can use PTN layer2 until the first L3 ATN site.

You just need to have very accurate dimensioning model according to the services, in case of LTE there X2 (IP Layer 3 interface)   latency is very strict you can not afford to have ATN routers  far away of many hopes from PTN otherwise you will have high latency and X2 interface will fail to work