What is the fine-grained topic of the following text: If you have cellular service from T-Mobile and travel outside the U.S. for business on a regular basis, we can provide an international call forwarding solution that will ensure that you never miss those important calls while you're outside the U.S. Rather than paying exorbitant international roaming fees, you can use our service as a "bridge" to forward calls from your current U.S. cellular phone number to any international number - anywhere in the world! Only return the topic.
International call forwarding solution for T-Mobile customers traveling outside the U.S.