No ping can't be made with Prontoscript as it uses the ICMP protocol, which the pronto has no direct support of. I mean it has it built in (you can ping a remote and it replies, and every device that communicates via IP has to have ICMP as it is a control protocol for IP) but we don't have any direct access to it.

It is a protocol of the Network layer (ISO-OSI model) like IP. But pronto supports direct interaction only with upper layer (Transport layer) protocols, TCP and UDP.

So Lyndel you are correct.