Area Codes 248 & 947
Telephone Central Office Building Pictures

The following are representative examples of telephone central office buildings in Area Codes 248 & 947 (Michigan).

Click on the pictures below for a larger version.

Birmingham Photo 2	Listing Updated: November 2011 Operating Company: at&t/SBC/Ameritech/Michigan Bell CLLI: BRHMMIMNDS0 Switch Type: Nokia/Siemens EWSD DE5 Prefixes Served: (248) 203, 258, 433, 540, 549, 554, 593-4, 642, 644-7, 901, 988, 723 Notes: This CO building once had a WECO 1AESS until mid-2011. The NNX codes that were once served by the 1AESS are now being served by the existing EWSD. Birmingham was the second area in the US to have nationwide Direct Distance Dialing (DDD). Also serves parts of Royal Oak. Source: TCO
Farmington	Listing Updated: November 2011 Operating Company: at&t/SBC/Ameritech/Michigan Bell CLLI: FRTNMIMNDS0 Switch Type: Ribbon/Genband/Nortel DMS-100 Prefixes Served: (248) 426-7, 442, 471, 473-4, 476-8, 615, 888 Notes: Source: TCO
Pontiac	Listing Updated: November 2011 Operating Company: at&t/SBC/Ameritech/Michigan Bell CLLI: PNTCMIMNDS0 PNTCMIMNDS2 Switch Type: DS0: Ribbon/Genband/Nortel DMS-100 DS2: Ribbon/Genband/Nortel DMS-100 Prefixes Served: DS0: (248) 339, 451-4, 454, 456, 753, 758, 857-8, 874, 972, 975 DS2: (248) 253, 322, 332-5, 338, 745 Notes: Source: TCO
Royal Oak	Listing Updated: November 2011 Operating Company: at&t/SBC/Ameritech/Michigan Bell CLLI: RYLOMIMNDS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (248) 336, 398-9, 414, 541-8, 582, 584, 586, 591, 691 (313) 564 Notes: Also serves parts of Detroit Zone 03. Source: TCO
Southfield "Main"	Listing Updated: November 2011 Operating Company: at&t/SBC/Ameritech/Michigan Bell CLLI: SFLDMIMNDS0 SFLDMIMNDS1 Switch Type: DS0: Ribbon/Genband/Nortel DMS-100 DS1: Ribbon/Genband/Nortel DMS-100 Prefixes Served: DS0: (248) 208, 223, 304, 351-6, 359, 445, 455, 501, 503, 603, 799, 827, 902-3, 945, 948 (313) 232-3, 507-8, 786 DS1: (248) 213, 262-3, 350, 357-8, 368, 372, 386, 447-8, 746 Notes: Also serves parts of Detroit Zone 05. Source: TCO