Cisco 12DS3-SMB-B 12-Port DS-3 TDM Line Card Service Module

12-Port DS-3 TDM Line Card Service Module

In response to higher bandwidth and capacity demand, carriers and Internet service providers (ISPs) are now offering DS-3 (45 Mbps) dedicated access connections. For service providers looking to simplify the deployment and delivery of DS-3 leased-line services with Cisco 12000 Series Internet routers, Cisco Systems offers the DS-3 Line Card with ECC.

Spare Product, Scrambling and subrate support of major data-service-unit (DSU) vendors, C-bit or M13 framing (software selectable), Support for 16 and 32-bit cyclic redundancy checks (CRCs) (16-bit default), Line build-out: configurable for up to 450 ft, Alarm indication signal (AIS), Out of frame (OOF), Far-end receive failure (FERF)
Memory: Route: 64 MB upgradable to 256 MB, Packet: 128 MB
Packet-Layer Features: Cisco Express Forwarding table that can accommodate up to 1 million forwarding entries, Application-specific integrated circuit (ASIC)-based queuing, QoS support, Multiprotocol Label Switching (MPLS)

Manufacturer: Cisco Systems, Inc
Manufacturer Part Number: 12DS3-SMB-B=
Brand Name: Cisco
Product Name: 12-Port DS-3 TDM Line Card
Product Type: Service Module
Application/Usage: Data Networking
Interfaces/Ports: 12 x DS-3
Interfaces/Ports Details: 12 x SMB Duplex DS-3
Data Transfer Rate: 44.74 Mbps DS-3
Management: Command Line Interface (CLI), SNMP, MIB-II, IEEE 802.1p QoS
Form Factor: Hot-pluggable
Dimensions: 14.5" Height x 1.3" Width x 18.5" Depth
Weight (Approximate): 6.00 lb
Compatibility: Cisco 12000 Series Internet Routers

This Cisco 12DS3-SMB-B 12-Port DS-3 TDM Line Card Service Module is in refurbished condition and is fully guaranteed by our 90-day warranty. Please feel free to contact us regarding our inventory of refurbished Cisco networking equipment, or if you have any additional questions regarding this 12DS3-SMB-B 12-Port DS-3 TDM Line Card Service Module.

United States of America Shipping


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International / Foreign Shipping


Cisco 12DS3-SMB-B 12-Port DS-3 TDM Line Card Service Module units which are shipped internationally have a mandatory 4-10 business day security holding period between payment being received and shipment processing. This security policy is to allow funds to fully clear our bank account. International transport costs can be charged directly to your FedEx or UPS account number. We cannot ship internationally using your TNT account number; however you can coordinate with TNT to have them pick up the shipment from our location.


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  • Manufacturer: Cisco
  • Part Number: 12DS3-SMB-B
  • Units in Stock: 25
  • Condition: Refurbished
  • Warranty: 90 Days
  • Description: Cisco 12DS3-SMB-B 12-Port DS-3 TDM Line Card Service Module

  • Same day shipping available.
    Overnight and expedited shipping services available.
  • Price: $652.95