English to Russian Tech/Engineering Computers: Systems, Networks

Интересует именно, что такое interco (intercos там где множ. число), встречается в таких контекстах:
A router that is used for L3 DSL intercos.
Here is the list of existing L3 DSL intercos and their corresponding PE LNS gateways
As migrating the DSL interco means migrating all end-user connections in one shot (as a reminder, shared ATM Vc are established between carrier LACs and our LNS), an interim architecture is put in place (except Spain) to allow a smoother migration