NM-1T3/E3

The Cisco NM-1T3/E3 is a carrier-grade router network module designed to deliver high-speed WAN connectivity over T3/E3 circuits for branch and service-provider environments. With one T3/E3 BNC interface supporting full-duplex transmission and data rates up to 44.736 Mbps (T3) or 34.368 Mbps (E3), it is ideal for demanding Asian, European, African, and North American enterprise networks. Compatible with Cisco 2600, 3600, and 3700 series routers, this hot-swappable internal module simplifies deployment and maintenance. Support for HDLC, PPP, Frame Relay, ATM, and Transparent HDLC encapsulation offers flexible integration into legacy and modern WAN architectures. Internal and external clocking with defined maximum cable distances ensures reliable operation across diverse regional carrier infrastructures.

Product Features Comparison

Model	NM-1T3/E3, Cisco Router Network Module, 1-port T3/E3, Hot-swappable, High-speed WAN	SPA-2XT3/E3, Cisco ASR 9000 Adapter, 2-port Clear Channel T3/E3/Shared Port Adapter	NM-1A-T3/E3, Cisco Router Network Module, 1-Port T3/E3, ATM support, Network Module	SPA-5X1GE-V2, Cisco 7600 Series Shared Port Adapter, 5×GE ports/Hot-swappable/High throughput
Brand	Cisco	Cisco	Cisco	Cisco
Module Type	n/a	n/a	Network module	n/a
Port Configuration	One port	Port density per SPA: 2- and 4-port options	1-Port T3/E3	Port density per SPA: 2*, 5, 8, or 10 Gigabit Ethernet ports (*usable in combination of SFP and RJ-45 ports for a total of 2 Gigabit Ethernet ports)
Supported Speed	Up to 34.368 Mbps (E3) / 44.736 Mbps (T3)	Full-duplex connectivity at T3 rate (44.736 MHz) or E3 rate (34.368 MHz)	Up to 44.736 Mbps (T3) / 34.368 Mbps (E3)	n/a
Compatible Platform	Cisco 2600, 3600, and 3700 series	Cisco 7304 Router; Cisco 7600 Series Routers; Cisco 12000 Series Routers; Cisco ASR 9000 Series Router; Cisco XR 12000 Series Routers	Cisco routers	Cisco Catalyst 6500 Series Switches (2 and 10-port GE SPAs); Cisco 7600 Series Router (2-, 5-, and 10-port GE SPAs); Cisco 12000 Series Router (2-, 5-, 8-, and 10-port GE SPAs); Cisco XR 12000 Series Router (2-, 5-, 8-, and 10-port GE SPAs); Cisco ASR 1000 Series Router (2-, 5-, 8-, and 10-port GE SPAs); Cisco CRS Carrier Routing System (5-, 8-, and 10-port GE SPAs); Cisco 10000 Series Router (2 and 5-port GE SPAs)
Installation Type	Plug and play	Online insertion and removal (OIR); Single SPA software reset	Hot-Swappable	Support for CLI-controlled online insertion and removal (OIR)