Some Indonesian banks are known to have sought cheaper terrestrial alternatives, but so far do not seem to have found them, at least on the scale of they require. BCA thus said in 2006 it was about to migrate its data communication system from VSATs to a new fiber network, but has evidently not done so on the full scale of its operations.77 Others, notably BRI, also migrated a small proportion of their ATMs to cellular-based GPRS networks around 2010, but found the latter to be so unreliable that, according to the service providers which support them, they have since returned all of them to VSATs. One issue was the very low volume of communication traffic which ATMs generate, which, compared with their overall telephone traffic, cellular carriers did not find large enough to warrant offering SLAs or priority routing.