P1247176258VcibB

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Docket No. UT 970300 U S WEST Communications,
Inc. Direct Testimony of Margaret S.
Bumgarner Exhibit MSB-8 Page 1 of 4
U S WEST Basic SS7 Signaling Network
Legend STP - Signal Transfer Point
A-LINKS
A-LINKS
TRUNKS
U S WEST CENTRAL OFFICE
U S WEST CENTRAL OFFICE
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Docket No. UT 970300 U S WEST Communications,
Inc. Direct Testimony of Margaret S.
Bumgarner Exhibit MSB-8 Page 2 of 4
SS7 Signaling With Database Access
A-LINKS
A-LINKS
PHOENIX
DENVER
Tempe, AZ.
NorthGlenn, CO.
Regional
Regional
C-LINKS
STP
STP
D-LINKS
D-LINKS
Legend LIDB - Line Information Data Base
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Docket No. UT 970300 U S WEST Communications,
Inc. Direct Testimony of Margaret S.
Bumgarner Exhibit MSB-8 Page 3 of 4
FACILITY BASED CLEC ACCESS TO U S WEST SIGNALING
NETWORK
CLEC
U S WEST
A-LINKS
DENVER
PHOENIX
Tempe AZ
North Glenn CO
C-LINKS
STP
STP
D-LINKS
A-LINKS
A-LINKS
TRUNKS
CLEC CENTRAL OFFICE
U S WEST CENTRAL OFFICE
U S WEST CENTRAL OFFICE
4
Docket No. UT 970300 U S WEST Communications,
Inc. Direct Testimony of Margaret S.
Bumgarner Exhibit MSB-8 Page 4 of 4
CLEC Signaling Network Interconnection
CLEC
U S WEST
A-LINKS
PHOENIX
DENVER
Regional
Regional
North Glenn CO
Tempe AZ
C-LINKS
STP
STP
D-LINKS
B-LINKS
A-LINKS
A-LINKS
TRUNKS