Onward Routing Call Forwarding
The switch architecture for
commonly used global digital
technologies has the ability
to forward an inbound call
to a number resident on that
switch to another number or
route, either internally within
the same switch or externally
using carriage to another switch
or network location. This solution
is the simplest option to implement
MNP since it requires little,
if any, modification of the
donor switch.
Advantages
- Easy to implement, requiring
few changes, if any, to the
mobile switches
- No impact on the fixed network
operator call handling
- Quick roll out is possible
- The switch changes, ports,
trunks and signaling area are
all reusable or recoverable
to the DONOR OPERATOR when
the call forwarding
function is no longer required;
either due to the customer disconnecting
service or returning to service
with the DONOR OPERATOR
- Switch memory, call processing,
trunks, trunk ports and signaling
capacity are all fungible
resources.
Disadvantages
- Potential to overload
the call forwarding capacity,
necessitating the deployment
of extra capacity
- SMS messages cannot be forwarded
in this way
- International calls terminating
to a ported mobile number cannot
be traced by the RO’s billing
system
- The DONOR OPERATOR remains
involved each time the customer
ports or disconnects
- Calls forwarded to a recipient’s
switch rely on the integrity
of the Donor Operator or’s
network for the grade of service
offered to its customers
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