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: Nokia/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: Ribbon/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 Saint 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: Ribbon/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: Nokia/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 Saint 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: Nokia/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: Ribbon/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: Ribbon/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: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (314) 355, 438, 653, 741, 953 Notes: This north Saint 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: (was HVTRMO65RS4) Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (314) 219 Notes: This was one of the last new Class 5 switches installed in the Saint 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: Nokia/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 Saint Louis. It houses a 5ESS switch which replaced the last 1AESS office in the Saint 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: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (314) 364, 467, 525, 543, 729-30, 842-3, 849 Notes: It is home to a 5ESS switch.
Saint Louis "Chestnut" Photo 2 | Photo 3	Listing Updated: August 2010 Operating Company: at&t/SBC/Southwestern Bell CLLI: STLSMO01DSA Switch Type: Ribbon/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.
Saint Louis "Evergreen"	Listing Updated: July 2010 Operating Company: at&t/SBC/Southwestern Bell CLLI: DS2: STLSMO02DS2 RS1: STLSMO02RS1 RS5: STLSMO01RS5 Switch Type: DS2: Nokia/Alcatel/Lucent 5ESS RS1: Nokia/Alcatel/Lucent 5ESS Remote RS5: Nokia/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.
Saint Louis "Ferguson"	Listing Updated: July 2010 Operating Company: at&t/SBC/Southwestern Bell CLLI: STLSMO20DSA Switch Type: Nokia/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.
Saint Louis "Flanders"	Listing Updated: July 2010 Operating Company: at&t/SBC/Southwestern Bell CLLI: STLSMO03DS1 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (314) 351-3, 457, 481, 752, 832 Notes: This central office is located in south Saint Louis. The third floor (until recently) housed one of the remaining 1AESS switches in Saint 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 Saint Louis city offices are known by the EXchange they once served.
Saint Louis "Forest"	Listing Updated: July 2010 Operating Company: at&t/SBC/Southwestern Bell CLLI: STLSMO04RPA Switch Type: Ribbon/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.
Saint Louis "Jefferson"	Listing Updated: July 2010 Operating Company: at&t/SBC/Southwestern Bell CLLI: 321: Western Electric 1AESS CG0: Western Electric 1AESS RS2: Nokia/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 Saint 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)./
Saint Louis "Melrose"	Listing Updated: July 2010 Operating Company: at&t/SBC/Southwestern Bell CLLI: STLSMO11DSA Switch Type: Nokia/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.
Saint Louis "Mission" Photo 2	Listing Updated: July 2010 Operating Company: at&t/SBC/Southwestern Bell CLLI: STLSMO06DS1 Switch Type: Nokia/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.
Saint 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 Saint 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.
Saint Louis "Overland"	Listing Updated: July 2010 Operating Company: at&t/SBC/Southwestern Bell CLLI: STLSMO23RPA Switch Type: Ribbon/Genband G6 Packet Remote Prefixes Served: (314) 253, 423, 426-9, 538, 733, 890 Notes: This was a Western Electric 1AESS until 2013.
Saint Louis "Parkview"	Listing Updated: July 2010 Operating Company: at&t/SBC/Southwestern Bell CLLI: STLSMO07DSA Switch Type: Ribbon/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 Saint Louis metro area.
Saint Louis "Prospect"	Listing Updated: August 2010 Operating Company: at&t/SBC/Southwestern Bell CLLI: STLSMO08RPA Switch Type: Ribbon/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.
Saint Louis "Riverview"	Listing Updated: July 2010 Operating Company: at&t/SBC/Southwestern Bell CLLI: STLSMO24RPA Switch Type: Ribbon/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.
Saint Louis "Webster Groves"	Listing Updated: July 2010 Operating Company: at&t/SBC/Southwestern Bell CLLI: STLSMO26DSA Switch Type: Ribbon/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.
Saint 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 Saint 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.
Saint 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 Saint Louis MTSOs and it was built around 1990. It includes office space for a number of AT&T technicians and managers.