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Area Code 231
Telephone Central Office Building Pictures

The following are respresntative examples of telephone central office buildings in Area Code 231 (Michigan).

Click on the pictures below for a larger version.


Big Rapids
 

Listing Updated:
November 2011

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

CLLI:
BGRPMIMNDS0

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(231) 527, 591-2, 796

Notes:
Source: TCO

 

Northport
 

Listing Updated:
November 2011

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

CLLI:
NPRTMIMNRSA

Switch Type:
Genband/Nortel RSC

Prefixes Served:
(231) 386

Notes:
Source: TCO

 

Traverse City

Photo 2
 

Listing Updated:
November 2011

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

CLLI:
TRCYMIMNDS1

Switch Type:
Genband/Nortel DMS-100/200

Prefixes Served:
(231) 890, 922, 929, 932-3, 935

Notes:
Source: TCO

 

 


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