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Name:
L-FL-CME-SRST-5=
- Description:
- COMMUNICATION MANAGER EXPRESS OR SRST 5SEAT ESD RTU FOR 3900 ISR
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L-FL-CME-SRST-5=
COMMUNICATION MANAGER EXPRESS OR SRST 5SEAT ESD RT...
$252.92
$70.82
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$70.82
72% off
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L-FL-CME-SRST-5= Overview
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.
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L-FL-CME-SRST-5= Specifications
| Product Type | Software License |
| Software Category | Network Management |
| License Type | Volume |
| License Duration | Lifetime |
| Use Case | Enterprise |
| User Count | 5 Users |
| Device Count | N/A |
| Platform Compatibility | Cross-Platform |
| Delivery Method | Digital Key |
| Activation Type | Online Activation |
| Language Support | English |
| Bit Version | N/A |
| Cloud Integration | N/A |
| Software Format | Downloadable |
| Support Included | Yes |
| Product Name | L-FL-CME-SRST-5=-COMMUNICATION MANAGER EXPRESS OR SRST 5SEAT ESD RTU FOR 3900 ISR |
| License Key Included | Yes |
| ESD (Electronic Software Delivery) | Yes |
| Renewable | N/A |
| Compliance Certifications | N/A |
| Product Region | Global |
L-FL-CME-SRST-5= Use Case
Branch Office Telephony Failover with L-FL-CME-SRST-5 on Cisco 3900 ISR
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.
Regulatory-Compliant Emergency Calling for Manufacturing Sites
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.
Controlled Voice Feature Testing in Pre-Production
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.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| Activation Type | Online Activation | Online Activation | Online Activation | Online Activation | Online Activation |
| Bit Version | N/A | N/A | 64-bit | N/A | N/A |
| Cloud Integration | N/A | N/A | N/A | N/A | N/A |
| Compliance Certifications | N/A | N/A | N/A | N/A | N/A |
| Delivery Method | Email Delivery | Digital Key | Digital Key | Digital Key | Email Delivery |
| Device Count | 1 Device | 1 Device | N/A | N/A | N/A |
| ESD (Electronic Software Delivery) | Yes | Yes | Yes | Yes | Yes |
| Language Support | English | English | English | English | English |
| License Duration | Lifetime | Lifetime | 1 Year | Lifetime | Lifetime |
| License Key Included | Yes | Yes | Yes | Yes | Yes |
| License Type | Perpetual | Perpetual | Volume | Volume | Volume |
| Platform Compatibility | N/A | Cross-Platform | Cross-Platform | Cross-Platform | N/A |
| Product Name | 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-CME-SRST-5=-COMMUNICATION MANAGER EXPRESS OR SRST 5SEAT ESD RTU FOR 3900 ISR | L-FL-CUE-MBX-5=-L-FL-CUE-MBX-5 Cisco Unity Express - 5 mailbox E-Delivery PAK |
| Product Region | Global | Global | Global | Global | Global |
| Product Type | Software License | Software License | Software License | Software License | Software License |
| Renewable | No | N/A | Yes | N/A | No |
| Software Category | Network Management | Network Management | Network Management | Network Management | Collaboration |
| Software Format | Downloadable | Downloadable | Downloadable | Downloadable | N/A |
| Support Included | Yes | Yes | Vendor Support Required | Yes | Vendor Support Required |
| Use Case | Enterprise / Business / IT Admin | IT Admin | Enterprise | Enterprise | Enterprise |
| User Count | N/A | N/A | 100+ Users | 5 Users | 5 Users |
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Questions & Answers
Q
What is Cisco L-FL-CME-SRST-5= for ISR 3900?
A
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.
Q
Which features does the 5-seat CME/SRST license provide?
A
This license provides basic IP telephony, call processing, call transfer, voicemail integration, and local call survivability for up to five endpoints.
Q
Is the CME/SRST 5-seat license compatible with all ISR 3900 models?
A
Yes, it is compatible with all Cisco 3900 Series Integrated Services Routers running IOS 15.3 or later with CME or SRST capability.
Q
What does ESD RTU mean in this license context?
A
Electronic Software Delivery (ESD) Real-Time Use (RTU) means the license is delivered electronically and becomes active upon installation without physical media.
Q
How do I install the CME/SRST 5-seat ESD license?
A
Download the license file from Cisco Software Download, upload it to the ISR 3900 router, and activate it using the CLI license install command.
Q
How do I activate the CME/SRST license on the ISR router?
A
Use the Cisco IOS CLI commands ‘license install <filename>’ followed by ‘config t’ and ‘service‐module CM‐express’ to enable the license.
Q
Can I expand beyond five seats in the future?
A
Yes, you can purchase additional license packs (e.g., 10 or 20-seat increments) and install them on the same ISR 3900 platform.
Q
What happens to calls if the central IP PBX fails?
A
In survivable mode, CME or SRST on the ISR 3900 takes over call processing locally, ensuring uninterrupted service for up to five endpoints.
Q
Do I need additional hardware for SRST functionality?
A
No additional hardware is required; the ISR 3900 router running the CME/SRST license provides all necessary resources for five-seat survivability.
Q
Which Cisco IOS version supports this license?
A
CME/SRST 5-seat ESD RTU is supported on Cisco IOS 15.3(3)M or later releases optimized for ISR 3900 series.
Q
How do I verify the installed license status?
A
Use the ‘show license summary’ and ‘show telephony-service application summary’ commands to confirm license activation and seat count.
Q
Is software support included with the ESD license?
A
Software updates require an active Cisco SMARTnet contract; the ESD RTU license itself does not include ongoing software support.
Q
How can I renew or extend my CME/SRST license?
A
Contact your Cisco reseller to purchase a renewal or upgrade. Renewals are processed electronically and installed via the same CLI commands.
Q
Where can I purchase the L-FL-CME-SRST-5= license?
A
This license is available through authorized Cisco partners or directly via the Cisco Commerce Workspace for immediate electronic delivery.
Q
What is the difference between CME and SRST modes?
A
CME provides full call processing on the router, while SRST offers limited survivability by maintaining basic call functionality when the central call manager fails.
Q
Does this license support voice encryption?
A
Basic TLS and SRTP encryption require additional licenses and Cisco IOS features; the 5-seat ESD license focuses on call processing and survivability.
