3300 ICP General Information Guide
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These modules require 300 MHz or faster processors.
The Dual T1/E1 Module is a Field Replaceable Unit (FRU) that can be installed in any of the
MMC sites in the front panel of the 3300 controller.
Combo T1/E1 Module
The Combo T1/E1 Module combines trunking and DSP functionality in a single card. The new
T1/E1 Combo card, available at Release 7.0, provides for resiliency. Designed for businesses
where resilience is critical but where only a single digital link to the PSTN is needed, the Combo
T1/E1 card provides a mechanism to switch the digital link from one 3300 ICP to another in the
event of the primary controller failing. You must have two 3300 ICPs running Release 7.0
software and a T1/E1 trunk connected to the primary controller. The trunk can fail over to the
secondary ICP in the event of a primary ICP failure.
The digital trunk port can be configured as a T1 interface (1.544 Mbps) that provides 24
B-channels for T1/D4 or an E1 interface (2.0 Mbps) that provides 30 B-channels for E1. The
DSP provides resources for CLASS tone generation, Record a Call conferences, DMTF
receivers, voice compression, and voice echo cancellation. Embedded PRI is offered for the
3300 ICP via the T1/E1 module..
Note: The module is not designed for hot insertion into an MMC module site on a powered
up carrier card. Refer to the Technician’s Handbook for installation procedures.
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