Yes, sounds very similar. Currently, most calls initially come in on PRIs on the AT&T system. If the destination is a Cisco phone, the 5ESS routes it on PRI to Cisco. We may start to go the other way around - SIP to Cisco first then routed to the 5E. Makes sense going forward. Would eliminate the situation we're talking about. Our project isn't progressing quickly. By the time the 5ESS is decommissioned, and maybe when your Nortel is, we may be past retirement age!