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by Cisco
Product Line: Cisco 4000 Series Integrated Services Routers
Product Type: Router
Sold out
Original price $0.00 - Original price $32,088.00
Original price
$0.00 - $32,088.00
Current price $0.00
Title: Surplus

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Product Description

The CTI-3241-GWISDNK9 Cisco integrates IP and ISDN devices within a 1 RU form factor, supporting automatic load balancing and an inbuilt gatekeeper for efficient network management. It accommodates up to 4 PRI ISDN ports, enabling up to 120 voice calls at 64 Kbps and 60 voice calls at 128 Kbps, with video calls at 720p HD resolution at 30 fps. This device ensures secure communication through AES encryption, supports video standards including H.261, H.263, H.263+, H.264, and offers comprehensive quality of service and security features for optimal network performance.

Key Feature for the CTI-3241-GWISDNK9

  • What is the form factor and rack size of this networking hardware?
    The device has a 1 RU form factor and is designed for a 19 in. rack.
  • How many PRI ISDN ports does the device support?
    It supports up to 4 PRI ISDN ports.
  • Can you detail the video resolution capabilities?
    The device supports 720p HD video at 30 fps.
  • What is the maximum number of voice calls at 64 Kbps?
    Up to 120 voice calls can be supported at 64 Kbps.
  • What encryption method is used for security?
    The device uses AES encryption for enhanced security.
  • How many voice calls can it support at 128 Kbps?
    It can support up to 60 voice calls at 128 Kbps.
  • What video standards are supported by this device?
    It supports H.261, H.263, H.263+, and H.264 video standards.
  • What is the range of operating temperature for the device?
    The operating temperature ranges from 0 °C to 35 °C.
  • How many status LEDs does the device feature?
    There are 27 status LEDs on the device.
  • What are the embedded web server functions?
    The embedded web server allows complete configuration, control, and monitoring of the system.

Product Review

The Cisco CTI-3241-GWISDNK9 excels in integrating IP and ISDN devices, supporting up to 4 PRI ISDN ports and enabling up to 120 voice calls at 64 Kbps, which is beneficial for large-scale communication needs. However, its maximum power consumption of 110 W may be considered high for some deployments, impacting long-term operational costs. Additionally, the device's comprehensive encryption and security features, including AES and SRTP encryption, ensure secure communication channels, crucial for maintaining data integrity and privacy.


The Cisco CTI-3241-GWISDNK9 is a 1 RU, rack-mountable device designed for seamless integration between IP and ISDN devices, featuring a 19-inch rack size for easy installation in standard racks. This device offers a unique combination of hardware specifications tailored for high-performance networking environments, focusing on efficient communication and security. At the core of its video capabilities, the device supports 720p HD video resolution at 30 frames per second, ensuring clear and high-quality video communications. It is equipped to handle up to 4 PRI ISDN ports, allowing for a broad connection range with ISDN networks. The device's capacity for voice calls is notable, supporting up to 120 voice calls at 64 Kbps and 60 voice calls at 128 Kbps, with the bandwidth per call ranging from a minimum of 56 Kbps to a maximum of 2 Mbps. This flexibility in bandwidth management enables the device to accommodate various communication needs efficiently. Encryption is handled via AES, providing a secure communication channel for all transmissions. The device supports a wide range of video standards, including H.261, H.263, H.263+, and H.264, as well as audio standards like G.711, G.722, G.722.1, G.728, and Polycom, ensuring compatibility with a variety of devices and networks. - Frame rates are supported up to 30 frames per second and 60 fields per second, offering smooth video playback. - ISDN signaling is comprehensive, including Q.931, NFAS, 4ESS, and DMS100 support, facilitating broad network compatibility. - The embedded web server functions allow for complete configuration, control, and monitoring of the system, simplifying management tasks. Quality of service is a priority, with configurable DSCP or TOS/IP Precedence, H.323 flow control, and dynamic jitter buffers ensuring reliable and high-quality communication. Security features include a strong password policy, secure management via HTTPS, SRTP encryption, and an audit log, offering robust protection against unauthorized access and data breaches. The device is designed with 27 status LEDs for easy monitoring of system status and performance. It operates within a temperature range of 0 °C to 35 °C and can function in environments with up to 95% noncondensing relative humidity, ensuring reliable performance in a variety of conditions. The device's dimensions are 1.73 x 17.2 x 12.3 inches, making it compact enough for efficient use of rack space while remaining accessible for maintenance and monitoring. Power requirements are accommodated with an input voltage rating of 100 VAC to 240 VAC, and the device's maximum power consumption is 110 W, indicating efficient energy use for its capabilities. This balance of power efficiency and performance capability makes the Cisco CTI-3241-GWISDNK9 an excellent choice for organizations looking to bridge IP and ISDN networks securely and efficiently.


Part Number and ManufacturerCisco CTI-3241-GWISDNK9
Installation TypeRack-Mountable
Unit Height1 RU
Compatible Rack Dimension19 inches
Key FeaturesIP to ISDN Bridging, Built-in Gatekeeper Functionality, Distributed Load Management
Supported Video Quality720p HD at 30 frames per second
Max PRI ISDN Ports4
Voice Channels at 64 Kbps120
Voice Channels at 128 Kbps60
Lowest Bandwidth per Voice Channel56 Kbps
Highest Bandwidth per Voice Channel2 Mbps
Data Protection StandardAES Encryption
Supported Video ProtocolsH.261, H.263, H.263+, H.264
Frame Rate CapabilityUp to 30 fps and 60 fields per second
Audio CompatibilityG.711, G.722, G.722.1, G.728, Polycom
ISDN Protocol SupportQ.931, NFAS, 4ESS, DMS100
Web Management FeaturesSystem Setup, Management, and Monitoring
Service Quality OptionsDSCP or TOS/IP Precedence Selection, H.323 Bandwidth Management, Adaptive Jitter Buffer
Security ProtocolsPassword Policy Enforcement, HTTPS for Secure Management, SRTP for Secure Voice, Audit Trail
Indicator LEDs27
Operational Temperature Range0 to 35 °C
Operational Humidity RangeUp to 95% non-condensing
Dimensions (Height x Width x Depth)1.73 x 17.2 x 12.3 inches
Power Supply Requirements100 to 240 VAC
Peak Power Draw110 Watts

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