Summoner, surprise round, summon monster ability?

[into the aether]

Surprise round: Summoner uses his standard action to use his summon monster ability. Does the summoned monster get a full turn or only a standard or move action?

[Uwotm8]

It's still a surprise round. It should be constrained to a single standard.

[wraithstrike]

Standard action

[Nefreet]

Summon something that pounces.