Cisco's ISR 4000 digital voice guide configures clocking with network-clock synchronization automatic and designates a T1/E1 controller as the input source with network-clock input-source priority.

Checked 2026-09-24

Vendor
Cisco
Product
ISR 4000 Series
Subsystem
clocking
Deployment
on-premises
Region
not restricted
Release range
ISR 4000 Series
Checked
2026-09-24

Sources

Cite this note

APA

WarmTransfer. (2026, September 24). PRI and TDM gateway interworking: source note legacy-pri-tdm-isr4k-network-clock. WarmTransfer. https://warmtransfer.net/knowledge/claims/legacy-pri-tdm-isr4k-network-clock

BibTeX

@misc{warmtransfer-claim-legacy-pri-tdm-isr4k-network-clock,
  title  = {PRI and TDM gateway interworking: source note legacy-pri-tdm-isr4k-network-clock},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/legacy-pri-tdm-isr4k-network-clock},
  note   = {Source note legacy-pri-tdm-isr4k-network-clock, checked 2026-09-24}
}

Read in context