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Area Code 314
Telephone Central Office Pictures

The following are representative examples of telephone central office buildings in Area Code 314 (Missouri).

Click on the pictures below for a larger version.


Creve Coeur

Photo 2

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO27DS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(314) 205, 275, 317, 415, 434, 439, 453, 469, 514, 523, 529, 542, 576, 579, 628, 844, 851, 878

Notes:
This office is home to 5ESS switch. It also provides office space for local AT&T engineering and planning employees.

 

Kirkwood

Photo 2

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO41DS2

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(314) 821-2, 835, 909, 957, 965-6, 984
 

Notes:
It houses a DMS100 which serves this suburb west of St. Louis. Photo 2 shows the original central office with the business entrance at the left hand side of the photo. The original building has been expanded 3 times to accommodate many other things than the DMS100 switch.

 

Kirkwood

"Des Peres"

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
DSPRMOASRS1

Switch Type:
Genband/Nortel RSC?

Prefixes Served:
None

Notes:
As you can see it looks nothing like a traditional CO. It is served by a Nortel RSC hosted by the Parkview DMS100. This building was originally built in the 1990s for Yellow Pages but before that part of SBC could move in it was turned over to the Sales organization. It is a beautiful structure inside and out and it has more conference/ presentation rooms than any other building outside of a university.

 

Ladue

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO21DS3

Switch Type:
Alcatel/Lucent 5ESS Host

Prefixes Served:
(314) 213-4, 216, 246, 251, 274, 432, 567, 569, 587, 692-4, 716, 810, 812, 872, 983, 989, 991, 993-7

Notes:
Ladue is an upscale suburb in St. Louis county. It hosts a 5ESS switch and an STP.

 

Ladue

"Bridgeton"

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO42DS1

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(314) 209, 291, 298, 344, 702, 738-9, 770

Notes:
 

 

Ladue

"Florissant"

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO40RPA

Switch Type:
Genband G6 Packet Remote

Prefixes Served:
(314) 830-1, 837-9, 921, 972

Notes:
This was originally a Western Electric 1AESS switch until 2016.

 

Ladue

"Hazelwood"

Photo 2

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO43RPA

Switch Type:
Genband G6 Packet Remote

Prefixes Served:
(314) 551, 731, 895

Notes:
This was a Western Electric 1AESS switch until 2013.

 

Ladue

"Spanish Lake"

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO45DSA

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(314) 355, 438, 653, 741, 953

Notes:
This north St. Louis county office serves an area that boomed in the 1980s. It houses a 5ESS switch. The building is not named after the EXchange prefix, it is named after the suburb in which it is situated. There is no municipality named Spanish Lake. The area was named after the pond the Spanish military had there next to Fort Don Carlos and until late in the 19th century the area was called Spanish Pond. At that point local landowners who wanted to encourage people to move there and build inflated the pond to a lake and “Spanish Lake” it remains to this day.

 

Ladue

"Weldon Springs"

Photo 2

Listing Updated:
August 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
HVTRMO65RS4

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(314) 219

Notes:
This was one of the last new Class 5 switches installed in the St. Louis metropolitan area. The building is only about 1 year old in this picture. It replaced a small CO east of this location with the old DLC used to serve the once tiny subscriber base.

 

Mehlville/Oakville

"Mehlville"
 

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO22DS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(314) 293, 416, 487, 845-6, 892, 894

Notes:
Serves both Mehlville and Oakville ratecenters.  This office is in the southwest suburbs of St. Louis. It houses a 5ESS switch which replaced the last 1AESS office in the St. Louis metro area. The tracing in front of the office was necessitated by the widening of the street in front of the office from 2 lanes to 6 around 1988.

 

Sappington

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO25DSA

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(314) 364, 467, 525, 543, 729-30, 842-3, 849

Notes:
It is home to a 5ESS switch.

 

 

St. Louis

"Chestnut"

Photo 2 | Photo 3

 

Listing Updated:
August 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO01DSA

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(314) 206, 231, 235, 241-2, 244, 284, 331, 335, 340, 345, 418, 421, 425, 444, 465-6, 516, 539, 571, 769, 923, 982, 992

Notes:
This building was built around and above the original structure which was only a few building bays wide and a 3 or 4 stories in height. It was greatly expanded in 1926 and was approximately half of the size it is today. Shortly after World War II it was expanded to its present dimensions to accommodate a growing Headquarters staff.

 

St. Louis

"Evergreen"

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
DS2: STLSMO02DS2
RS1: STLSMO02RS1
RS5: STLSMO01RS5

Switch Type:
DS2: Alcatel/Lucent 5ESS
RS1: Alcatel/Lucent 5ESS Remote
RS5: Alcatel/Lucent 5ESS Remote

Prefixes Served:
DS2: (314) 261, 381-3, 385, 389, 553, 679
RS1: (314) 260, 263
RS5: (314) 489

Notes:
This office houses a Lucent No.5 ESS switch. The area is economically distressed since the major employers here closed their plants 15 to 20 years ago.

 

St. Louis

"Ferguson"

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO20DSA

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(314) 264, 493, 506, 521-2, 524, 592, 595, 654

Notes:
It's another metro office know by its old EXchange name. It houses a Lucent No. 5ESS switch.

 

St. Louis

"Flanders"

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO03DS1

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(314) 351-3, 457, 481, 752, 832

Notes:
This central office is located in south St. Louis. The third floor (until recently) housed one of the remaining 1AESS switches in St. Louis. FLanders was the EXchange in this office which was once home to more party lines than any other office in Southwestern Bell Telephone Company. Almost all St. Louis city offices are known by the EXchange they once served.

 

St. Louis

"Forest"

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO04RPA

Switch Type:
Genband G6 Packet Remote

Prefixes Served:
(314) 361, 367, 454, 758, 823, 826, 829, 848, 855, 879

Notes:
This was a Western Electric 1AESS switch until 2013.

 

St. Louis

"Jefferson"

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
321: Western Electric 1AESS
CG0: Western Electric 1AESS
RS2: Alcatel/Lucent 5ESS Remote

Switch Type:
321: STLSMO05321
CG0: STLSMO05CG0
RS2: STLSMO05RS2

Prefixes Served:
321: (314) 321
CG0: (314) 286, 289, 371, 531, 533-5, 652, 658
RS2: (314) 715

Notes:
This building is home to a No. 1A ESS switch and also houses a Tandem switch. The 1970s addition of the 3rd through 5th floors is inconsistent architecturally with the original building. That's odd, most Southwestern Bell additions blend in fairly nicely. The Central office serves an area which is bouncing back from blight largely due to the presence of St. Louis University immediately to the South and east. It also serves the refurbished Fox Theater and the Powell Symphony Hall. This office also houses a Tandem switch (STLSMO0501T) and a TOPS (STLSMO05B2T)./

 

St. Louis

"Melrose"

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO11DSA

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(314) 256, 544, 615, 631, 633, 638, 676, 763, 765, 767

Notes:
It houses another 5ESS switch. MElrose was the EXchange for this office.

 

St. Louis

"Mission"

Photo 2

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO06DS1

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(314) 644-7, 768, 781, 951

Notes:
This office houses a Lucent No.5ESS switch. The office is actually located in the suburb of Maplewood. Photo 2 shows detail over the front door which shows the stone detail over the front door of the office. The first picture clearly shows the 3rd floor addition to the building which was done to accommodate the No.1 ESS switch which has since been replaced by the 5ESS. The original basic office clearly stands out in contrast to the additions done to this building over its life.

 

 

St. Louis

"Olive" (AT&T Toll)

Photo 2 | Photo 3

 

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO09

Switch Type:
Lucent 4ESS

Prefixes Served:
(AT&T CLEC)

Notes:
Toll office for AT&T in St. Louis. This is a 3 building complex. There is no class 5 (local) switch in this office. It consists of a small 2 story original building, a large 6 story growth building from the 1920s and a massive 10 story building added in the late 1940s. This is where the 4ESS toll tandem was and where radio routes from all points of the compass were repeated as well as originated.

 

St. Louis

"Overland"

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO23RPA

Switch Type:
Genband G6 Packet Remote

Prefixes Served:
(314) 253, 423, 426-9, 538, 733, 890

Notes:
This was a Western Electric 1AESS until 2013.

 

St. Louis

"Parkview"

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO07DSA

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(314) 273, 290, 362, 445, 480, 505, 512, 515 (CC), 572-3, 719, 721, 725-7, 746-7, 854, 859, 862-3, 889, 933, 935, 977

Notes:
The office hosts a Lucent No.5ESS and a Nortel DMS100. It is located in University City which is the home of Washington university, the finest school in Missouri. This office is only 11 blocks west of the Forest office but you find no bricked up windows here. This location in "U City" is a popular entertainment area in the St. Louis metro area.

 

St. Louis

"Prospect"

Listing Updated:
August 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO08RPA

Switch Type:
Genband G6 Packet Remote

Prefixes Served:
(314) 268, 577, 664, 762, 771-3, 776, 865

Notes:
The former 2L-5N EXchange here was PRospect. This was a Western Electric 1AESS switch until 2013. This office serves a large number of Southeast Asian immigrants.

 

St. Louis

"Riverview"

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO24RPA

Switch Type:
Genband G6 Packet Remote

Prefixes Served:
(314) 388, 867-9

Notes:
This was a Western Electric 1AESS switch until 2013. I don't know why it's called Riverview because you are 2 miles from the Mississippi and can't see it from the central office.

 

St. Louis

"Webster Groves"

Listing Updated:
July 2010

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
STLSMO26DSA

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(314) 301, 918-9, 961-3, 968

Notes:
It was built to fit in with the old wealthy suburb town of Webster Groves, MO where it sits on the main street, Lockwood Ave. It houses a Nortel DMS100 switch. The two smaller oak trees in front of the office were only 10 feet tall when they were planted in about 1963 when the photographer was a boy there.

 

St. Louis

"Phantom" (MTSO)

Listing Updated:
August 2010

Operating Company:
at&t Mobility/Cingular

CLLI:
NWTPMOABCM6

Switch Type:
(unknown)

Prefixes Served:
(Many cellular prefixes in 314, 573, 618, 636)

Notes:
This is a Mobile Telephone Switching Office in St. Louis county. It is named after the street it is located on. This building looks nothing like a traditional CO and it is not collocated with a tower so it is very difficult to find.

 

St. Louis

"Woodsmill" (MTSO)

Photo 2

Listing Updated:
July 2013

Operating Company:
at&t Mobility/Cingular

CLLI:
MNCHMOAQ

Switch Type:
(unknown)

Prefixes Served:
(unknown)

Notes:
This office is one of 2 St. Louis MTSOs and it was built around 1990. It includes office space for a number of AT&T technicians and managers.

 

 


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Page last modified August 27, 2016
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