As well as canonical hairpin-forming terminator, phage RNA polymerases also recognize intrinsic, hairpin-independent termination signal. A conserved 7-base pair sequence (ATCTGTT in the non-template strand) and U-rich sequence downstream of it are required for termination. Mutations at four amino acid residues, K303, R307, E738 and D766, increase termination efficiency on at hairpin-independent termination signal. Guanidine hydrochloride increases the termination efficiency at hairpin-independent terminator but exerts no effect on hairpin terminator, suggesting that a conformational change promoted by the denaturant be involved in this termination process. We also found that termination could occur prior to the known termination site. At each of the termination sites, RNA polymerase complex manifests multiple states. When a normal elongation complex is trapped by the termination signal, it becomes a paused complex, which is still capable of resuming transcription. The paused complex becomes a termination complex that is destined to disintegrate. The paused complex could revert to normal elongation state. It can also proceed further via an alternative pathway, which is slow and requires high NTP concentration compared to normal elongation. Collapse of transcription bubble at a region corresponding to the conserved sequence was observed 4 bp before the termination site. From these results, we proposed a model for termination at hairpin-independent termination signal.