Version 5.8 31 July 2009
Installation Manual 2. Physical Description
2.6.3 RTM-8410 Rear Transition Module
The RTM-8410 is housed in the chassis' rear panel. This RTM interfaces with the 8410
blade housed in the chassis' front panel, through the midplane. RTM-8410 provides and
routes DS1 (E1/T1) PSTN interfaces to the active 8410 blade. RTM-8410 also provides two
Gigabit Ethernet interfaces (RJ-45 ports or fiber optic SPF modules) for connection to the
LAN (IP network), using Cat 5 or fiber optic cables, respectively.
The type and quantity of RTM-8410's housed in the chassis depends on the number of
supported E1/T1 interfaces, as listed in the table below:
Table 2-16: Type and Quantity of RTM-8410 per E1/T1 Span Configuration
E1/T1 Span Configuration RTM-8410 Type and Quantity
Fixed 16 E1/T1 One RTM, providing a single SCSI connector (refer to ''RTM-
8410 for 16-Span Configuration'' on page 31).
Scalable from 16 E1/T1 to 32 E1 /
42 T1
Two RTM's, each providing two SCSI connectors, but only one
RTM is cabled (refer to ''RTM-8410 for Scalable Span
Configuration'' on page 31).
Scalable from 32 E1 / 42 T1 to
63 E1 / 84 T1
Two RTM's, each providing two SCSI connectors for 42 E1/T1
spans (refer to ''RTM-8410 for Scalable Span Configuration'' on
page 31).
Fixed 63 E1 / 84 T1 Two RTM's, each providing two SCSI connectors for 42 E1/T1
spans (refer to ''RTM-8410 for Scalable Span Configuration'' on
page 31).
Note: For blade slot assignment in the chassis, refer to ''Card Cage and Slot
Assignment'' on page 16.
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