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Area Codes 773 & 872
Telephone Central Office Building Pictures

The following are respresntative examples of telephone central office buildings in Area Codes 773 & 872 (Outer Chicago, Illinois).

Click on the pictures below for a larger version.


Chicago Zone 02

"Edgewater"
 

Listing Updated:
November 2011

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
CHCGILEDDS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(773) 271, 275, 293, 334, 506, 561, 728, 769, 784, 878, 907, 989

Notes:
Source: TCO

 

Chicago Zone 02

"Rogers Park"
 

Listing Updated:
November 2011

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
CHCGILRPDS0

Switch Type:
Nokia Siemens EWSD

Prefixes Served:
(773) 262, 274, 338, 381, 465, 508, 743, 761, 764, 973

Notes:
Source: TCO

 

Chicago Zone 03

"Newcastle"
 

Listing Updated:
November 2011

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
CHCGILNEDS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(708) 457, 667, 867
(773) 467, 594, 631, 763, 774-5, 792, 990
(847) 588, 600, 647

Notes:
Serves parts of Kildare. Source: TCO

 

Chicago Zone 04

"Lakeview"
 

Listing Updated:
November 2011

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
CHCGILLWDS0
CHCGILLWDS1

Switch Type:
DS0: Alcatel/Lucent 5ESS
DS1: Alcatel/Lucent 5ESS

Prefixes Served:
DS0: (773) 244, 296, 325, 388, 404, 477, 528-9, 665, 755, 832, 871, 929

DS1: (773) 248, 281, 327, 348, 472, 525, 549, 868, 880, 883, 935, 975

Notes:
Source: TCO

 

Chicago Zone 05

"Austin"
 

Listing Updated:
November 2011

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
CHCGILAUCG0

Switch Type:
WECO 1AESS

Prefixes Served:
(773) 261, 287, 378-9, 473, 626, 854, 921

Notes:
Source: TCO

 

Chicago Zone 06

"Kedzie"
 

Listing Updated:
November 2011

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
CHCGILKEDS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(773) 265, 533, 638, 722, 826

Notes:
Source: TCO

 

Chicago Zone 06

"Lafayette"
 

Listing Updated:
November 2011

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
CHCGILLADS0

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(773) 247, 254, 376, 523, 534-5, 553, 579, 650, 801, 843, 847, 869, 890, 927

Notes:
Source: TCO

 

Chicago Zone 08

"Portsmouth"
 

Listing Updated:
November 2011

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
CHCGILPMDS0

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(773) 284, 581-2, 585, 735, 767, 838, 884

Notes:
Source: TCO

 

 


Copyright 2011 Central Office Building Pictures
Page last modified November 10, 2011
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