S.2919: A bill to promote the accurate transmission of network traffic identification information.

Signaling Modernization Act of 2008 - Amends the Communications Act of 1934 to require a telecommunications service or IP-enabled voice service provide to ensure that all voice communications service traffic originating on its network contains the signaling information reasonably needed to facilitate intercarrier billing in accordance with industry standards. Requires a provider that transports or transits traffic between voice communications service providers to forward the signaling information it receives from another provider (without altering such signaling information) that is reasonably needed to facilitate intercarrier billing in accordance with industry standards, except as otherwise permitted by the Federal Communications Commission (FCC).