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Area Code 619
Telephone Central Office Building Pictures

The following are respresntative examples of telephone central office buildings in Area Code 619 (south & western San Diego county).

Click on the pictures below for a larger version.


 

 

Campo

Photo 2

 

Listing Updated:
December 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
CAMPCA11RS0

Switch Type:
Genband/Nortel RSC

Prefixes Served:
(619) 478

Notes:
Rural central office. Note the use of the old Pac Bell logo even though this area had changed to SBC and later at&t local.

 

 

 

Chula Vista

"Chula Vista Main"

Photo 2 | Photo 3

 

Listing Updated:
August 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
CHVSCA11DS0

Switch Type:
Alcatel/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 Telesis/Pacific Telephone

CLLI:
CHVSCA12DS0

Switch Type:
Alcatel/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 Telesis/Pacific Telephone

CLLI:
IMBHCA11DS0

Switch Type:
Genband/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 Telesis/Pacific Telephone

CLLI:
OTMSCA11DS0

Switch Type:
Alcatel/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 Telesis/Pacific Telephone

CLLI:
SNYSCA12DS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(619) 428, 662, 690

Notes:
 

 

 

Coronado

Listing Updated:
August 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
CRNDCA11RP0

Switch Type:
Genband/Nortel Media Gateway 9000

Prefixes Served:
(619) 435, 437, 522, 537, 545

Notes:
A packet switch was installed in July 2007 that has replaced the original DMS-100 switch. The building was recently expanded and actually goes down the block (to the right).

 

 

Dulzura

Photo 2 | Photo 3
Photo 4 | Photo 5

Listing Updated:
December 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
DLZRCA11RS0

Switch Type:
Genband/Nortel RSC

Prefixes Served:
(619) 468

Notes:
Rural central office. The pay phones located beside the CO building were used as emergency phones for people to make calls when phone service was cut due to forest fires in the area.

 

 

El Cajon

Photo 2

Listing Updated:
December 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
ELCJCA11DS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(619) 401, 440-2, 444, 447, 579, 588, 590, 593

Notes:
Urban central office.

 

 

El Cajon

"Lakeside"

Listing Updated:
December 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
LKSDCA12DS0

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(619) 390, 443, 561, 938 

Notes:
Suburban central office.

 

 

El Cajon

"Santee"

Listing Updated:
December 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
SANTCA01DS0

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(619) 258, 448-9, 562, 596, 956

Notes:
Suburban central office.

 

 

Harbison-Alpine

"Alpine"

Listing Updated:
December 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
ALPICA12DS0

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(619) 445, 659

Notes:
 

 

 

Jacumba

Listing Updated:
December 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
JCMBCA11RS0

Switch Type:
Genband/Nortel RSC

Prefixes Served:
(619) 766

Notes:
Rural central office.

 

 

La Mesa

Listing Updated:
December 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
LAMSCA01DS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(619) 337, 460-6, 469, 589, 644, 667-8, 697-8, 740

Notes:
Urban central office.

 

 

La Mesa

"Jamul"

Listing Updated:
December 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
JAMLCA60RS0

Switch Type:
Alcatel/Lucent 5ESS remote

Prefixes Served:
(619) 669

Notes:
Rural central office (but not for much longer).

 

 

La Mesa

"Rancho San Diego"

Listing Updated:
December 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
RNSDCA11DS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(619) 660, 670

Notes:
Suburban central office, located behind a small strip mall.

 

 

National City

Listing Updated:
August 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
NTCYCA11DS0

Switch Type:
Genband/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.

 

 

National City

"Saipan"

 

Listing Updated:
December 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
SNDGCA05DS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(619) 267, 470, 472, 475, 479

Notes:
Suburban central office. Trees surround the building to help blend in to the neighborhood.

 

 

Pine Valley

Listing Updated:
December 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
PNVYCA11RS0

Switch Type:
Genband/Nortel RSC

Prefixes Served:
(619) 473

Notes:
Rural CO remote in the small town of Pine Valley. Even in this small town, you can get DSL (per the ad on the CO building).

 

 

San Diego

"37th Street"

Photo 2 | Photo 3

Listing Updated:
December 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
SNDGCA06DS0

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(619) 228, 280-5, 516, 521, 528, 563, 584, 624, 640-1
(858) 279
 

Notes:
This is a very large and old central office. The newest portion is on the street corner (main picture). Photo 2 is the second most recent addition, and Photo 3 is the oldest portion.

 

 

San Diego

"C Street"

Photo 2

 

Listing Updated:
August 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
SNDGCA01DS0
SNDGCA01DS1

Switch Type:
DS0: Genband/Nortel DMS-100
DS1: Alcatel/Lucent 5ESS

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.

 

 

San Diego

"College"

Listing Updated:
December 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
SNDGCA11DS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(619) 229, 265, 286-7, 582-3

Notes:
Urban central office. Serves nearby San Diego State University.

 

 

San Diego

"Market"

Listing Updated:
December 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
SNDGCA12DS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(619) 262-4, 266, 527

Notes:
Urban central office.

 

 

San Diego

"Ocean Beach"

Photo 2 | Photo 3

 

Listing Updated:
August 2007

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
SNDGCA14DS0

Switch Type:
Alcatel/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 Telesis/Pacific Telephone

CLLI:
SNDGCA02DS0 (end office)
SNDGCA0290T (tandem)

Switch Type:
DS0: Alcatel/Lucent 5ESS (end office)
90T: Genband/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 (around the corner, 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 where the original at&t Long Lines long distance tandem for the San Diego region (088-T) is located. 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. However, it is now only used as a long haul tandem and not as an "edge" tandem as it once was.

 

 


Copyright 2013 Telephone Central Office Building Pictures
Page last modified August 16, 2013
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