Brand	Cisco
Product type	Network Switch Modules
Ports quantity	1
Compatibility	Cisco 4451-X
I/O ports	Serial WAN
Ports quantity	1
I/O ports	Serial WAN
Compatibility	Cisco 4451-X
Storage temperature (T-T)	-20 - 65 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 90%
Width	88.9 mm
Depth	183.9 mm
Height	31.8 mm

Brand	Cisco
Product Type	Network Interface Module
Network Standard	T1, E1, PRI
Compatible Platforms	Cisco ISR 4000 Series
Port Density	8 Ports
Performance	High Performance Voice/Data Trunk
Signaling Type	PRI
Power Requirement	12W per Module
Dimensions	1.585 x 7.28 x 6.70 inches
Operating Temperature	0 to 40°C (32 to 104°F)
Relative Humidity	5% to 85% Non-Condensing
Compliance	RoHS, CE
MTBF	57.2 years
Redundancy	Supported
QoS	Quality of Service Features Supported
Voice Protocols	SIP, H.323, MGCP
Data Rate	Up to 1.544 Mbps (T1) / 2.048 Mbps (E1)

Brand	Cisco
Product Type	Voice/Fax Expansion Module
Ports	8 Ports
Compatibility	Cisco Routers
Network Module	For Cisco Router Integration
Voice Protocols	SIP, H.323
Data Rate	Up to 64 Kbps
Fax Support	T.38 Fax Relay
Signal Protocol	SGCP, MGCP, SCCP
Interface	RJ-11
Power Source	Integrated in router
Dimensions	4.1 x 7.1 x 1.0 inches
MTBF	Above 450,000 hours