New CHANNEL BUZZ

Movistar Argentina has launched "Quieren Hablarte" (December 11, 2007), a new service that allows prepaid customers to send an SMS notification to other Movistar subscribers when their credit runs out (source: Movistar Press release, also AHCIET).
Movsitar also has the "Avisame" service, which notifies them of the availability of the called party up to 3 hours after a failed call atempt.
These services point to the relevance of a need for a call completion strategy in the region that focuses on different call scenarios as well as both calling party and called party.
It'll be interesting to see how the service is received by subscribers.
As we understand it, this service is automatic for all Movistar subscribers (Movistar to Movistar calls) with opt out option and a limit of 10 notifications once the subscriber's credit runs out.
Telecom Personal also has mellamas which is basically the same service (to another Telecom personal number or a fixed number).