Hardware Technical Reference Manual
Figure 14: Dual T1/E1 Framer
This module has two ports, each supporting a digital link. LEDs on the faceplate indicate the
status of each link. For a description of LED status and alarm indications, refer to the 3300 ICP
Technician’s Handbook.
Each of these links can be configured as a T1 (1.544 Mbps) (North America) or E1 (2.048 Mbps)
(Europe) interface.
T1 features:
• Support for ISDN PRI, QSIG, and T1/D4 links
• B8ZS or AMI line coding
• Superframe (SF) or Extended Superframe (EXF) framing
E1 features:
• Support for ISDN PRI and QSIG links
• CRC4 enable or disable
The Dual T1/E1 Framer module requires a 300 MHz or faster processor.
The Dual T1/E1 Framer MMC is a Field Replaceable Unit (FRU) that can be installed in any of
the MMC sites in the front panel of the 3300 controller.
Note: The CX/CXi and the MXe Server do not support Dual T1/E1 Framer modules.
Note: The following ISDN PRI features are not supported: D-channel backup, NFAS,
min/max capability, and TDM XNET (Hybrid XNET is supported).
Note: The module is not designed for hot insertion into an MMC module site on a
powered-up carrier card. Refer to the 3300 ICP Technician’s Handbook for installation
procedures.
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