20020927Craig Exhibit 501.pdf

SSP
End Office
SSP
End Office
STP
A Link A Link
Qwest
Terminating
Switch
ILEC, ICO, CLEC, IXC
Originating
Switch
Signaling Path Signaling Path
ACMSignaling Path
IAM Signaling Path
Party Dials
NPA NXX XXXX Power
Ringing
Audible
Ringing Party
AnswersANMSignaling Path
Party
Hangs Up REL Signaling Path
RLCSignaling Path
Exhibit No. 501
Case No. QWE-T-02-11
Craig, Joe (Direct)--Qwest
September 27, 2002
SSP (Service Switching Point)
STP (Signaling Transfer Point)
IAM (Initial Address Message)
ACM (Address Complete Message)
ANM (Answer Message)
REL (Release)
RLC (Release Complete)
Signaling Message
Signaling Network