SIP Hardware Installation Manual
46
Document #: LTRT-94701
3000 Series Gateways & Media Servers
3.3.2 Cabling
RTM-6310
Interfaces
The cabling of the interfaces provided on the RTM-6310 includes the following:
PSTN interfaces (depending on software configuration):
•
Connecting to STM-1/OC-3 interfaces (refer to ''Connecting STM-1/OC-3 PSTN
Interfaces'' on page
•
Connecting to T3 interfaces (refer to ''Connecting T3 PSTN Interfaces'' on page
Connect the Gigabit Ethernet interfaces to the IP network or LAN (refer to ''Connecting
GbE Interfaces to IP Network'' on page
Note:
For installing the RTM-6310 into a compactPCI™ chassis, refer to Inserting
into a CompactPCI Chassis.
3.3.2.1 Connecting STM-1/OC-3 PSTN Interfaces
The RTM-6310 provides two pairs of 155-Mbps optical small form-factor pluggable (SFP)
transceiver modules. The SFP pairs provide 1+1 redundancy scheme for STM-1/OC-3
PSTN interfaces. To interface with the SFP modules, you need to provide (i.e., not
supplied) the following items:
Cable:
twin, single-mode fiber optic cable
Connector:
LC-type plug
Caution Laser
Some blades contain a Class 1 LED/Laser emitting device, as defined by
21CFR 1040 and IEC825.
Do NOT stare directly into the beam or into fiber optic terminations as this can
damage your eyesight.
Care in Handling Fiber Optic Cabling:
1.
When handling fiber optic cables, be sure to implement the following:
- Excessive bending of the Fiber Optic Cable can cause distortion and
signal losses.
- Ensure the minimum bending radius recommended by the Fiber Optic
Cable supplier.
- Maximum Fiber Optic cable length for multimode fiber is 550 m.
2.
Incoming optic cabling from the network infrastructure can originate from
the top of the rack or from another shelf within the rack. Preserve the
minimum-bending ratio indicated by the cable manufacturer.
3.
To assure full high-availability capabilities, the configuration of the
interface to the IP backbone must include certain redundant features
from which two separate fiber optic cables are entering the device.
