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Overview
Specs
Part Number and Manufacturer | Cisco SM-D-72FXS |
Capacity | High |
FXS Ports Total | 72 |
Adjustable Ports | FXS with Extended Loop Capability: 3 |
Connector Type | RJ-21: 3 units |
FXO Bypass Connections | 2 |
Required Cisco IOS | Version 15.2(4)M2 or higher |
Voltage When On-Hook | -44 Volts |
Loop Current (Off-Hook) | 25 mA for Short, 35 mA for Long Loops |
Ring Signal Frequency | 20, 25, 30, 50 Hz Options |
Ring Signal Shape | Sine Wave, No DC Bias |
Short Loop Reach | Up to 3000 feet |
Long Loop Reach | Up to 11,000 feet |
Compatible Cabling | Category 3, Category 5 |
Connector Options | RJ-21, RJ-11 |
Module Size | Double-width |
Electromagnetic Compatibility | EN 55024, CISPR 24, EN50082-1, EN 61000 |
Compatible Cisco Platforms | Cisco 3945, 3945e, 3925, 3925e, 2951 |
Ringer Load Capacity | 5REN: Short, 2REN: Long Loops |
Ring Voltage Capability | 54 Vrms at 5REN (Short), 62 Vrms at 2REN (Long) at zero loop |
Supported Signal Types | Loop-Start, Ground-Start |
Module Slot Compatibility | Slot 4 for 3945/3945e, Slot 2 for 3925/3925e/2951 |
Caller Identification | Frequency-Shift-Keying On-Hook |
Customizable Ring Tones | Yes, per country regulations |
Loop Resistance Limits | Up to 600 Ohms (Short), Up to 1400 Ohms (Long) |
SM-D-72FXS
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Product Description
The SM-D-72FXS Cisco module features 72 Foreign Exchange Station (FXS) ports and supports Cisco IOS Software Release 15.2(4)M2 or later, providing a versatile solution for connecting analog devices. It offers advanced voice services with on-hook voltage of -44 V, off-hook loop current of 25 mA for short-loop-length ports and 35 mA for long-loop-length ports, and FXS loop length up to 3,000 ft for short-loop-length ports and up to 11,000 ft for long-loop-length ports, ensuring reliable communication over various distances. Compatibility with Cisco 3945, 3945e, 3925, 3925e, and 2951 platforms, along with RJ-21 and RJ-11 physical connectors, facilitates seamless integration into existing network infrastructures.Key Feature for the SM-D-72FXS
- What are the types of ports available on this device?
The device offers 72 Foreign Exchange Station (FXS) ports, 3 of which can be configured as FXS-Extended Loop Length ports, 2 Foreign Exchange Office (FXO) Bypass Ports, and it includes 3 RJ-21 connectors. - Which Cisco IOS Software Release is required for optimal performance?
Cisco IOS Software Release 15.2(4)M2 or later is required for optimal performance. - What is the maximum FXS loop length supported?
The device supports an FXS loop length of up to 3000 ft for Short-Loop-Length Ports and up to 11,000 ft for Long-Loop-Length Ports. - What type of physical connectors does the device use?
The device utilizes RJ-21 and RJ-11 physical connectors. - What are the ring voltage specifications?
Ring voltage is 54 Vrms into 5REN at zero loop length for short-loop-length ports, and 62 Vrms into 2REN at zero loop length for long-loop-length ports. - How many DWSM slots are available and in which platforms?
Slot 4 is available in Cisco 3945 and 3945e, while Slot 2 is available in Cisco 3925, 3925e, and 2951 platforms. - What signaling formats are supported for FXS?
The device supports Loop-Start and Ground-Start signaling formats for FXS. - What is the maximum FXS loop resistance supported?
The device supports up to 600 Ohms loop resistance for Short-Loop-Length Ports and up to 1400 Ohms for Long-Loop-Length Ports. - Which platforms are supported by this device?
Supported platforms include Cisco 3945, Cisco 3945e, Cisco 3925, Cisco 3925e, and Cisco 2951. - How is the caller ID transmitted?
Caller ID is transmitted on-hook using Frequency-Shift-Keying.
Product Review
The Cisco SM-D-72FXS module offers a high density of 72 FXS ports, providing an efficient solution for connecting analog devices to a VoIP network. Its support for both short and long-loop-length ports, with up to 11,000 ft for the latter, allows flexibility in deployment over varied distances. However, the module requires Cisco IOS Software Release 15.2(4)M2 or later and is only compatible with specific Cisco platforms, which may limit its application in diverse network environments.
Overview
Specifications
Part Number and Manufacturer | Cisco SM-D-72FXS |
Capacity | High |
FXS Ports Total | 72 |
Adjustable Ports | FXS with Extended Loop Capability: 3 |
Connector Type | RJ-21: 3 units |
FXO Bypass Connections | 2 |
Required Cisco IOS | Version 15.2(4)M2 or higher |
Voltage When On-Hook | -44 Volts |
Loop Current (Off-Hook) | 25 mA for Short, 35 mA for Long Loops |
Ring Signal Frequency | 20, 25, 30, 50 Hz Options |
Ring Signal Shape | Sine Wave, No DC Bias |
Short Loop Reach | Up to 3000 feet |
Long Loop Reach | Up to 11,000 feet |
Compatible Cabling | Category 3, Category 5 |
Connector Options | RJ-21, RJ-11 |
Module Size | Double-width |
Electromagnetic Compatibility | EN 55024, CISPR 24, EN50082-1, EN 61000 |
Compatible Cisco Platforms | Cisco 3945, 3945e, 3925, 3925e, 2951 |
Ringer Load Capacity | 5REN: Short, 2REN: Long Loops |
Ring Voltage Capability | 54 Vrms at 5REN (Short), 62 Vrms at 2REN (Long) at zero loop |
Supported Signal Types | Loop-Start, Ground-Start |
Module Slot Compatibility | Slot 4 for 3945/3945e, Slot 2 for 3925/3925e/2951 |
Caller Identification | Frequency-Shift-Keying On-Hook |
Customizable Ring Tones | Yes, per country regulations |
Loop Resistance Limits | Up to 600 Ohms (Short), Up to 1400 Ohms (Long) |