Source note · POTS line replacement and copper retirement
San Diego's fire alarm bulletin allows a DACT to use only one telephone line, paired with another NFPA 72 Chapter 26 method, and says NFPA 72 no longer allows two telephone lines.
Checked 2026-10-02
Only one phone line may be used along with another method approved by NFPA 72, Chapter 26 when using a DACT.
- Vendor
- not restricted
- Product
- not restricted
- Subsystem
- fire-alarm-communication
- Deployment
- premises-fire-alarm
- Region
- us-ca-san-diego
- Release range
- bulletin revision November 2024
- Checked
- 2026-10-02
Sources
- Technical Bulletin FIRE-9-2: Requirements for Fire Alarm Control Panels — City of San Diego Development Services Department · tier 1 standards and regulators · Communication methods section
Cite this note
APA
WarmTransfer. (2026, October 2). POTS line replacement and copper retirement: source note pots-line-replacement-sd-dact-one-phone-line. WarmTransfer. https://warmtransfer.net/knowledge/claims/pots-line-replacement-sd-dact-one-phone-line
BibTeX
@misc{warmtransfer-claim-pots-line-replacement-sd-dact-one-phone-line,
title = {POTS line replacement and copper retirement: source note pots-line-replacement-sd-dact-one-phone-line},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/pots-line-replacement-sd-dact-one-phone-line},
note = {Source note pots-line-replacement-sd-dact-one-phone-line, checked 2026-10-02}
}