Data showing phone lines per phone system per month from May 2009 to present. Phone systems include VoIP, Connally PBX and Centrex.

Phone Metrics

Phone Lines Per System - First Half 2019
Phone System Jan Feb Mar Apr May Jun
Centrex 6,307 6,288 6,270 6,265 6,250
Connally PBX 25 24 24 24 24
VoIP 10,166 10,196 10,258 10,275 10,238
Total Phone Lines 16,498 16,508 16,552 16,564 16,512

Phone Lines Per System - Second Half 2018
Phone System July Aug Sept Oct Nov Dec
Centrex 6,365 6,352 6,352 6,326 6,341 6,310
Connally PBX 28 27 23 25 25 24
VoIP 9,883 9,974 9,990 10,049 10,068 10,214
Total Phone Lines 16,276 16,353 16,365 16,400 16,434 16,548

Phone Lines Per System - First Half 2018
Phone System Jan Feb Mar Apr May Jun
Centrex 6,531 6,474 6,305 6,410 6,398 6,383
Connally PBX 57 53 47 31 28 28
VoIP 9,633 9,698 9,719 9,749 9,783 9,814
Total Phone Lines 16,221 16,225 16,071 16,190 16,209 16,225

Phone Lines Per System - Second Half 2017
Phone System July Aug Sept Oct Nov Dec
Centrex 6,806 6,768 6,750 6,611 6,546 6,644
Connally PBX 168 109 60 59 59 59
VoIP 9,174 9,329 9,448 9,429 9,471 9,472
Total Phone Lines 16,145 16,206 16,258 16,099 16,076 16,175

Phone Lines Per System - First Half 2017
Phone System Jan Feb Mar Apr May Jun
Centrex 7,220 7,170 7,130 7,091 6,997 6,856
Connally PBX 200 201 202 203 203 165
VoIP 8,857 8,876 8,885 8,911 8,901 9,129
Total Phone Lines 16,277 16,247 16,217 16,205 16,101 16,150

Phone Lines Per System - Second Half 2016
Phone System Jul Aug Sep Oct Nov Dec
Centrex 7,953 7,692 7,614 7,534 7,328 7,285
Connally PBX 501 423 217 216 212 213
VoIP 8,893 8,453 8,893 9,032 8,749 8,753
Total Phone Lines 16,491 16,586 16,724 16,782 16,289  16,251

Phone Lines Per System - First Half 2016
Phone System Jan Feb Mar Apr May Jun
Centrex 8,636 8,603 8,599 8,337 8,278 8,088
Connally PBX 501 501 500 502 502 501
VoIP 7,475 7,562 7,566 7,704 7,769 7,850 
Total Phone Lines 16,612 16,666 16,665 16,543 16,549  16,439

Phone Lines Per System - Second Half 2015
Phone System Jul Aug Sep Oct Nov Dec
Centrex 9,227 9,061 9,047 8,923 8,733 8,692
Connally PBX 496 498 501 500 499 498
VoIP 6,839 7,021 7,061 7,121 7,305 7,366
Total Phone Lines 16,562 16,580 16,609 16,544 16,537 

16,566


Phone Lines Per System - First Half 2015
Phone System Jan Feb Mar Apr May Jun
Centrex 9,990 9,739 9,559 9,509   9,459  9,409
Connally PBX 491 492 495 495  495  495 
VoIP 6,436 6,531 6,622  6,664 6,706  6,747 
Total Phone Lines 16,917 16,762 16,676  16,668 16,660  16,651 

Phone Lines Per System - Second Half 2014
Phone System Jul Aug Sep Oct Nov Dec
Centrex 10,759 10,570 10,545 10,477 10,410 10,233
Connally PBX 496 497 499 499 499 499
VoIP 5,555 5,759 5,964 6,032 6,119 6,174
Total Phone Lines 16,810 16,826 17,008 17,008 17,028 16,906

Phone Lines Per System - First Half 2014
Phone System Jan Feb Mar Apr May June
Centrex 11,017 10,991 10,963 10,929 10,897 10,892
Connally PBX 632 631 500 499 496 495
VoIP 5,177 5,208 5,358 5,402 5,458 5,478
Total Phone Lines 16,826 16,830 16,821 16,830 16,851 16,865

Phone Lines Per System - Second Half 2013
Phone System Jul Aug Sep Oct Nov Dec
Centrex 11,618 11,443 11,479 11,383 11,241 11,037
Connally PBX 652 651 650 651 649 633
VoIP 4,612 4,751 4,689 4,880 5,011 5,278
Total Phone Lines 16,882 16,845 16,818 16,914 16,901 16,948

Phone Lines Per System - First Half 2013
Phone System Jan Feb Mar Apr May Jun
Centrex 12,699 12,667 12,609 12,310 12,197 12,053
Connally PBX 725 721 675 675 653 650
VoIP 3,594 3,668 3,756 4,152 4,228 4,448
Total Phone Lines 17,018 17,056 17,040 17,137 17,078 17,151

Phone Lines Per System - Second Half 2012
Phone System Jul Aug Sep Oct Nov Dec
Centrex 13,168 13,038 13,040 13,044 12,853 12,814
Connally PBX 713 727 733 734 734 728
VoIP 3,151 3,274 3,264 3,299 3,407 3,494
Total Phone Lines 17,032 17,039 17,037 17,077 16,994 17,036

Phone Lines Per System - First Half 2012
Phone System Jan Feb Mar Apr May Jun
Centrex 14,088 14,241 13,366 13,322 13,290 13,254
Connally PBX 755 740 736 734 729 725
VoIP 2,962 3,047 2,992 3,004 3,041 3,116
Total Phone Lines 17,805 18,028 17,094 17,060 17,060 17,095

Phone Lines Per System - Second Half 2011
Phone System Jul Aug Sep Oct Nov Dec
Centrex 15,220 15,054 14,762 14,698 14,365 14,076
Connally PBX 846 849 842 825 825 774
VoIP 1,945 2,017 2,084 2,059 2,179 2,461
Total Phone Lines 18,011 17,920 17,688 17,582 17,369 17,311

Phone Lines Per System - First Half 2011
Phone System Jan Feb Mar Apr May Jun
Centrex 16,613 16,281 16,299 15,879 15,916 15,655
Connally PBX 891 891 890 852 850 846
VoIP 1,158 1,194 1,388 1,478 1,618 1,830
Total Phone Lines 18,662 18,366 18,577 18,209 18,384 18,331

Phone Lines Per System - Second Half 2010
Phone System Jul Aug Sep Oct Nov Dec
Centrex 17,658 17,545 17,403 17,084 17,591 16,803
Connally PBX 1,000 1,000 912 912 904 892
VoIP 896 1,062 1,113 1,097 1,151 1,140
Total Phone Lines 19,554 19,607 19,428 19,093 19,646 18,835

Phone Lines Per System - First Half 2010
Phone System Jan Feb Mar Apr May Jun
Centrex 18,368 18,269 18,187 18,087 18,013 17,901
Connally PBX 996 995 1,005 1,004 1,001 992
VoIP 604 717 772 860 853 892
Total Phone Lines 19,968 19,981 19,964 19,951 19,867 19,785

Phone Lines Per System - Second Half 2009
Phone System May Jun Jul Aug Sep Oct Nov Dec
Centrex 19,025 19,096 19,229 18,918 19,018 18,797 18,451 18,436
Connally PBX 998 1,026 998 983 998 992 1,010 992
VoIP 70 69 69 69 68 223 265 485
Total Phone Lines 20,093 20,191 20,296 19,970 20,084 20,012 19,726 19,913