T1 Failover (T1 Protection) Switch - 4 T1 Links (12 T1 Ports)
Cisco VWIC2-1MFT-T1/E1 2-Port Multiflex Trunk Voice
Amazon.com: Cisco Systems NIM-8MFT-T1/E1 8 Port Multiflex Trunk Voice/Clear-CH Data : Electronics
Shouki - 2-Port 2nd Gen Multiflex Trunk Voice/WAN Int. Card - T1/E1
Cisco VWIC2-1MFT-T1/E1 1-Port T1/E1 Multiflex Trunk Voice WAN Interface Module . inStock901.com - Technology Superstore of BPAI LLC
Cisco 4-Port Clear Channel T1/E1 High-Speed WAN Interface Card - Cisco
1E1/T1-F (1-Port Fractional Channelized E1/T1 WAN Interface Card) - AR100-S, AR110-S, AR120-S, AR150-S, AR160-S, AR200-S, AR1200-S, AR2200-S, and AR3200-S Hardware Description - Huawei
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Cisco NIM-2MFT-T1/E1 2-Port Multiflex Trunk Voice T1/E1 Module, 1 Yr Warranty
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Mitel/Inter-Tel 5000 Dual T1/E1/PRI Card - 2 Port Module (Part# 580.2702) - Professionally Refurbished — iStream Communications
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16 T1 Links (48 T1 Ports) APS - Automatic Protection / AB Fallback Switching Equipment
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VDG-T1001, E1/T1/PRI VoIP Gateway with 1 Port, Supports up to 30 Concurrent Calls - FS.com
C-DTU, Single Port, E1/T1 (PRI) Digital Card for IP PBX-C302/C503 - FS.com
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VWIC3-2MFT-T1 2 Port T1 E1 Multiflex Voice/WAN Interface Card - certificationtrainingsolutions.com
T1 Multiplexer | 4x T1 MUX
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