Source note · SRST on Cisco IOS XE
The 14.3 compatibility document lists the ISR 4451 and ISR 4461 at 2,000 phones and 2,500 lines, while the 2022 SRST data sheet lists the ISR 4451-X at 2,000 phones and 3,500 lines.
disputed · Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Unified SRST
- Subsystem
- platform-limits
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Unified SRST 14.3 vs data sheet dated 2022-10-21
- Status
- disputed
- Checked
- 2026-09-25
Sources
- Unified SRST/E-SRST 14.3 Supported Firmware, Platforms, Memory, and Voice Products — Cisco Systems · tier 2 current vendor documentation · Platform capacity table > rows Cisco ISR 4451, Cisco ISR 4461
Cite this note
APA
WarmTransfer. (2026, September 25). SRST on Cisco IOS XE: source note srst-configuration-limit-isr4451-lines. WarmTransfer. https://warmtransfer.net/knowledge/claims/srst-configuration-limit-isr4451-lines
BibTeX
@misc{warmtransfer-claim-srst-configuration-limit-isr4451-lines,
title = {SRST on Cisco IOS XE: source note srst-configuration-limit-isr4451-lines},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/srst-configuration-limit-isr4451-lines},
note = {Source note srst-configuration-limit-isr4451-lines, checked 2026-09-25}
}