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L-FL-CME-SRST-5=
COMMUNICATION MANAGER EXPRESS OR SRST 5SEAT ESD RTU FOR 3900...
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L-FL-CME-SRST-5=-COMMUNICATION MANAGER EXPRESS OR SRST 5SEAT ESD RTU FOR 3900 ISR is a network management software solution designed to streamline communications and provide robust management capabilities for enterprise-grade routing systems. Built under a volume license model, the product supports a 5-user configuration and is compatible with multiple platforms, ensuring reliable performance for SMBs, enterprises, IT administrators, and educational institutions.
Delivered as an electronic software download via a digital key, this solution features an online activation process and offers a lifetime license with essential vendor support. Its design emphasizes ease of deployment on cross-platform environments while addressing real-world use cases—particularly for IT management and enterprise network administration—through a focused communication management approach.
L-FL-CME-SRST-5= price is $70.82, a 72% saving from the Cisco list price of $252.92. L-FL-CME-SRST-5= is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for L-FL-CME-SRST-5= for additional pricing. Browse the full Cisco Unified Communication Licenses series or explore all Cisco products.
In a distributed retail environment, when the WAN link to the corporate UC platform goes down, L-FL-CME-SRST-5 – Communication Manager Express SRST 5-Seat ESD RTU on the Cisco 3900 ISR automatically takes over local call processing for up to five users. This failover ensures uninterrupted customer service calls, eliminates revenue-impacting outages, and maintains SLA compliance without manual intervention.
At a high-security manufacturing plant, L-FL-CME-SRST-5 on the Cisco 3900 ISR guarantees that five critical ESD (Emergency Services Direct) extensions remain operational during network outages by switching to Survivable Remote Site Telephony mode. This setup secures continuous access to emergency services, meets regulatory requirements, and protects personnel safety with zero additional hardware costs.
IT teams preparing a UC upgrade deploy L-FL-CME-SRST-5 on a standalone Cisco 3900 ISR to isolate a pilot group of five seats for feature validation. This Survivable Remote Site Telephony (SRST) configuration replicates real-world call scenarios, accelerates testing cycles, and eliminates risk to live users—ensuring a seamless, zero-downtime rollout of new communication services.
To get the detailed certification, please go to the Compliance Center.
| L-FL-CME-SRST-5= |  FL-GK-3925 |  SL-ES3-24-48-IPS |  FL-CUBEE-100= |  L-FL-CUE-MBX-5= | |
|---|---|---|---|---|---|
| Product Type | Software License | Software License | Software License | Software License | Software License |
| Software Category | Network Management | Network Management | Network Management | Network Management | Collaboration |
| License Type | Volume | Perpetual | Perpetual | Volume | Volume |
| License Duration | Lifetime | Lifetime | Lifetime | 1 Year | Lifetime |
| Use Case | Enterprise | Enterprise / Business / IT Admin | IT Admin | Enterprise | Enterprise |
| User Count | 5 Users | N/A | N/A | 100+ Users | 5 Users |
| Device Count | N/A | 1 Device | 1 Device | N/A | N/A |
| Platform Compatibility | Cross-Platform | N/A | Cross-Platform | Cross-Platform | N/A |
| Delivery Method | Digital Key | Email Delivery | Digital Key | Digital Key | Email Delivery |
| Activation Type | Online Activation | Online Activation | Online Activation | Online Activation | Online Activation |
| Language Support | English | English | English | English | English |
| Bit Version | N/A | N/A | N/A | 64-bit | N/A |
| Cloud Integration | N/A | N/A | N/A | N/A | N/A |
| Software Format | Downloadable | Downloadable | Downloadable | Downloadable | N/A |
| Support Included | Yes | Yes | Yes | Vendor Support Required | Vendor Support Required |
| Product Name | L-FL-CME-SRST-5=-COMMUNICATION MANAGER EXPRESS OR SRST 5SEAT ESD RTU FOR 3900 ISR | FL-GK-3925-Cisco 3900 License FL-GK-3925 Gatekeeper Feature License -3925 platform | SL-ES3-24-48-IPS-UPG IP SERVICES LICS 16PORT FE ES3 ETHERSWITCH | FL-CUBEE-100=-FL-CUBEE-100= Unified Border Element Enterprise License - 100 sessions | L-FL-CUE-MBX-5=-L-FL-CUE-MBX-5 Cisco Unity Express - 5 mailbox E-Delivery PAK |
| License Key Included | Yes | Yes | Yes | Yes | Yes |
| ESD (Electronic Software Delivery) | Yes | Yes | Yes | Yes | Yes |
| Renewable | N/A | No | N/A | Yes | No |
| Compliance Certifications | N/A | N/A | N/A | N/A | N/A |
| Product Region | Global | Global | Global | Global | Global |
E-delivery SRST 5-seat license activated instantly and performed reliably in outage testing.
Perfect fit for very small branches needing survivability.
Straightforward licensing and stable call control.
Did exactly what SRST is meant to do.
Consistent behavior after activation.
Cisco L-FL-CME-SRST-5= is a five-seat Electronic Software Delivery (ESD) real-time use (RTU) license enabling Communication Manager Express or Survivable Remote Site Telephony on ISR 3900 routers.
This license provides basic IP telephony, call processing, call transfer, voicemail integration, and local call survivability for up to five endpoints.
Yes, it is compatible with all Cisco 3900 Series Integrated Services Routers running IOS 15.3 or later with CME or SRST capability.
Electronic Software Delivery (ESD) Real-Time Use (RTU) means the license is delivered electronically and becomes active upon installation without physical media.
Download the license file from Cisco Software Download, upload it to the ISR 3900 router, and activate it using the CLI license install command.
Use the Cisco IOS CLI commands ‘license install <filename>’ followed by ‘config t’ and ‘service‐module CM‐express’ to enable the license.
Yes, you can purchase additional license packs (e.g., 10 or 20-seat increments) and install them on the same ISR 3900 platform.
In survivable mode, CME or SRST on the ISR 3900 takes over call processing locally, ensuring uninterrupted service for up to five endpoints.
No additional hardware is required; the ISR 3900 router running the CME/SRST license provides all necessary resources for five-seat survivability.
CME/SRST 5-seat ESD RTU is supported on Cisco IOS 15.3(3)M or later releases optimized for ISR 3900 series.
Use the ‘show license summary’ and ‘show telephony-service application summary’ commands to confirm license activation and seat count.
Software updates require an active Cisco SMARTnet contract; the ESD RTU license itself does not include ongoing software support.
Contact your Cisco reseller to purchase a renewal or upgrade. Renewals are processed electronically and installed via the same CLI commands.
This license is available through authorized Cisco partners or directly via the Cisco Commerce Workspace for immediate electronic delivery.
CME provides full call processing on the router, while SRST offers limited survivability by maintaining basic call functionality when the central call manager fails.
Basic TLS and SRTP encryption require additional licenses and Cisco IOS features; the 5-seat ESD license focuses on call processing and survivability.