|
Decisions / Recommendations |
The N-1 carrier
(i.e. company) is responsible for performing the dip, not the
N-1 switch. If there is a locally terminated call then the
originating carrier needs to perform the dip, because they
cannot be sure whether the tandem switch belongs to the N-1
carrier or the N carrier (terminating carrier). For all local
terminations the originating carrier needs to perform the dip,
however, for any calls going through an IXC the IXC must perform
the dip. Following are examples that were discussed:
b) Wireless to a
ported local wireline – the originating wireless carrier should
perform the dip, since they cannot be sure whether a tandem
switch belongs to a different carrier than the terminating
switch (unless they intend to default route and pay the
terminating carrier to perform the dip for them). |
