Area Code 619
Telephone Central Office Pictures

The following are respresntative examples of telephone central office buildings in area code 619 (southwestern San Diego county).

Click on the pictures below for a larger version.

This section was insipred by Telephone Central Offices and Telebeans.Org

Chula Vista "Chula Vista Main" Photo 2 | Photo 3	Listing Updated: August 2007 Operating Company: at&t/SBC/Pacific Telephone CLLI: CHVSCA11DS0 Switch Type: Lucent 5ESS Prefixes Served: (619) 407, 409, 420, 422, 425-7, 476, 498, 595, 691 Notes: Urban central office building. An advertisement for their services hangs from the building (photo 2). Also notice the use of "at&t" for their pedestal boxes (photo 3)
Chula Vista "Chula Vista East" Photo 2	Listing Updated: August 2007 Operating Company: at&t/SBC/Pacific Telephone CLLI: CHVSCA12DS0 Switch Type: Lucent 5ESS Prefixes Served: (619) 216, 397, 421, 482, 502, 656 Notes: The new at&t logo covers up an old Bell logo that is embossed in the concrete of the exterior of the building.
Chula Vista "Imperial Beach"	Listing Updated: August 2007 Operating Company: at&t/SBC/Pacific Telephone CLLI: IMBHCA11DS0 Switch Type: Nortel DMS-100 Prefixes Served: (619) 423-4, 429, 575, 628 Notes:
Chula Vista "Otay Mesa"	Listing Updated: August 2007 Operating Company: at&t/SBC/Pacific Telephone CLLI: OTMSCA11DS0 Switch Type: Lucent 5ESS Prefixes Served: (619) 661, 671, 710 Notes: Built in the 1990s to relieve the San Ysidro office.
Chula Vista "San Ysidro"	Listing Updated: August 2007 Operating Company: at&t/SBC/Pacific Telephone CLLI: SNYSCA12DS0 Switch Type: Lucent 5ESS Prefixes Served: (619) 428, 662, 690 Notes:
Coronado	Listing Updated: August 2007 Operating Company: at&t/SBC/Pacific Telephone CLLI: CRNDCA11DS0 CRNDCA11RP0 Switch Type: DS0: Nortel DMS-100 RP0: Nortel Media Gateway 9000 Prefixes Served: DS0: (619) 537 RP0: (619) 435, 437, 522, 545 Notes: A packet switch was installed in July 2007 that will eventually replace the existing DMS-100 switch. The building was recently expanded and actually goes down the block (to the right).
National City	Listing Updated: August 2007 Operating Company: at&t/SBC/Pacific Telephone CLLI: NTCYCA11DS0 Switch Type: Nortel DMS-100 Prefixes Served: (619) 292, 336, 474, 477 Notes: An older central office building located in a rough neighborhood. Notice the barbed wire above the door to prevent access to the roof.
San Diego "C Street" Photo 2	Listing Updated: August 2007 Operating Company: at&t/SBC/Pacific Telephone CLLI: SNDGCA01DS0 SNDGCA01DS1 Switch Type: DS0: Nortel DMS-100 DS1: Nortel DMS-100 Prefixes Served: DS0: (619) 230, 232-5, 239, 338, 446, 515, 531-3, 544, 556-7, 570, 595, 645, 652, 685, 687, 699, 744, (858) 570 DS1: (619) 231, 236-8, 578, 615, 696, 702 Notes: The first central office building in San Diego. Expanded building (Photo 2) to the rear of original building. Has two separate DMS-100 switches.
San Diego "Ocean Beach" Photo 2 | Photo 3	Listing Updated: August 2007 Operating Company: at&t/SBC/Pacific Telephone CLLI: SNDGCA14DS0 Switch Type: Lucent 5ESS Prefixes Served: (619) 221-6, 523-4, 553, 758 Notes: Large building that has an addition (photo 3) that goes down the block to the right.
San Diego "University" Photo 2	Listing Updated: August 2007 Operating Company: at&t/SBC/Pacific Telephone CLLI: SNDGCA02DS0 SNDGCA0290T Switch Type: DS0: Lucent 5ESS (end office) 90T: Nortel DMS-200 (tandem) Prefixes Served: DS0: (619) 209, 220, 260, 278, 291, 293-9, 491, 497, 542-3, 574, 680-3, 686, 688, 692, 717-8, 725, 767, 808, 817, 906, 908 Notes: This CO building houses a local end office switch as well as the regional tandem switch and includes a number of CLEC and cellular switches. This building is around the corner from the at&t Long Lines long distance tandem building (to the left of this picture).
San Diego AT&T Tandem Photo 2 | Photo 3 | Photo 4	Listing Updated: August 2007 Operating Company: at&t Long Lines CLLI: SNDGCA0787T Switch Type: WECO/Lucent 4ESS Prefixes Served: (none) Notes: This is the at&t Long Lines long distance tandem for the San Diego region (088-T). Note the microwave towers on top of the building, which are most likely no longer in service. The local central office and regional tandem is just to the right of the picture and around the corner. The 4ESS was installed in 1978 and is an international gateway with Mexico.