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4. Cisco 1-Port 4-Wire 56-/64-kbps CSU/DSU WAN Interface Card - DSU/CSU - HWIC - 64 Kbps

Cisco 1-Port 4-Wire 56-/64-kbps CSU/DSU WAN Interface Card - DSU/CSU - HWIC - 64 Kbps

Item#: YYD1-HWIC1DSU56K4  |  Model#: HWIC-1DSU-56K4=

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5. 1PT T1/FRACTIONAL T1-DSU/CSU WAN I/F CARD

1PT T1/FRACTIONAL T1-DSU/CSU WAN I/F CARD

Item#: YYT1-10140330  |  Model#: HWIC-1DSU-T1

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6. ADTRAN T1 ESF ACE (4th Gen) - CSU - 1.544 Mbps - T-1

ADTRAN T1 ESF ACE (4th Gen) - CSU - 1.544 Mbps - T-1

Item#: YYS1-2404575  |  Model#: 1204025L1

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