Raisecom RC3000-15 Hardware Description page 208

Raisecom
RC3000-15 (P100R001) Hardware Description
12.2 TP
12.2.1 Functions and appearance

Panel
The TP card is used to access services of Teleprotection devices. It
provides the following functions:
 Support accessing and transmitting services of teleprotection devices
based on C37.94 standard. The services are cross-connected through
the backplane, and then are multiplexed to the transmission network
through the aggregation card.
 Support capacity compression. You can configure cross connection
according to the N value of service bandwidth (N× 64 kbit/s, with N
ranging from 1 to 12 defined by C37.94 standard). Each service
occupies only "1+N" 64K timeslot instead of the whole E1 when it is
multiplexed. It supports integrating the capacity of data on multiple
optical interfaces during transmission. For example, timeslots occupied
by 4 optical interfaces are multiplexed to one E1 or one VC12 of the
aggregation card through cross connection.
 The C37.94 interface support N value auto-negotiation or N value
configuration in the Tx direction but only N value auto-negotiation in
the Rx direction.

Support 4 C37.94 service optical interfaces. The optical interface
supports being used independently or configured into protection pairs.
When 64K cross connection is configured, services of optical
interfaces 1–4 correspond to No. 1–4 ways of E1 resources on the TP
card.

Support 1+1 optical interface protection, support protection switching
according to LOS or "All Ones" (optional) alarm status, and support
configuring up to 2 protection pairs: No. 1 and No. 2 optical interfaces
support mutual protection; No. 3 and No. 4 optical interfaces support
mutual protection.
 Each optical interface supports clock data recovery and ALS.
 Support detecting and processing LOS alarms, Yellow alarms (remote
alarm indication), and "All Ones" alarms (service payload is all-1
code).
 Support internal and external loopback on the optical interface.
 Support 1 embedded BERT. For any way of C37.94 services, it
supports inserting bit errors to service payload at the side of optical
interface or backplane for test.
 Support software online upgrade.

Support being interconnected with devices of other vendors compliant
with the C37.94 standard.
The bandwidth of the C37.94 services of the teleprotection device is fixed as
2.048 Mbit/s. The value of N determines the number of payload bytes used in
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12 Telecontrol service cards
Function
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