Cisco 1751 - Manual (Page 89)

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Cisco 1751 Router Hardware Installation Guide
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Appendix E Installing the Echo Canceler Expansion Modules on Cisco Interface Cards
The following echo canceler expansion modules are available for voice-only
support on the 1-port RJ-48 multiflex trunk T1/E1 (VWIC2-1MFT-T1/E1) and on
the 2-port RJ-48 multiflex trunk T1/E1(VWIC2-2MFT-T1/E1) interface cards on
the Cisco 1751 router.
• 32-channel echo canceler expansion module for multiflex trunk
(EC-MFT-32)
• 64-channel echo canceler expansion module for multiflex trunk
(EC-MFT-64)
Installing and Configuring the Echo Canceler Expansion Modules
For information about installing the echo canceler expansion modules on the
1-port RJ-48 T1/E1 multiflex trunk and on the 2-port RJ-48 T1/E1 multiflex trunk
interface cards, refer to the
Installing Echo Canceler Expansion Modules on Cisco
Interface Cards.
For detailed information about configuring 1- and 2-port multiflex trunk interface
cards with echo cancellation, refer to
T1/E1 Multiflex Voice/WAN Interface Cards
with Echo Cancellation Module .