Cisco 15454-DS1-14= - 1.544Mbps Expansion Module Manuel de service télécharger pdf (Page 105)

TraverseEdge 2020 Applications and Engineering Guide, Chapter 3: System Applications

Release 5.0.x Turin Networks Page 3-73

• service state

• connection identifier

The user can delete a transparent DCC connection based on:

• connection identifier

• either connection AID

Connection or protection group request will be denied if:

• a 1+1 protection group exists on a selected facility and a K1K2 transparent connection is

requested on timeslot 1 or 2

• section DCC is selected for Turin Networks management and a transparent section DCC con-

nection is requested on timeslot 1 or 2

• a transparent section DCC connection exists on a selected facility and Turin Networks manage-

ment communication is requested for section DCC

• Additionally, if a transparent K1K2 connection exists on a selected facility and a 1+1 protec-

tion group is requested

NOTE: Timeslots 1 and 2 are reserved for future use. Any attempt to use these timeslots in transpar-

ent DCC overhead connections will be denied regardless of protection scheme.

Transparent Overhead Connection Performance

The NE takes no longer than 200ms to create a transparent overhead connection in an NE. When a trans-

parent overhead connection passes through the system, it is subjected to a slight delay in propagation not

exceeding more than 670µ seconds of delay through each NE.

Transparent Overhead Connection Service States

The TE-2020 transparent overhead connections utilize the same state model as traffic connections. If the

connection is placed OOS, a null value will be inserted in the DCC bytes. The default service state for each

connection shall be IS.

AIS-L Insertion

Because the TE-2020 acts as a line terminating element, upon reception of a fault (LOS, LOF, AIS-L, SD),

it will insert path AIS which propagates downstream and is received by a non-Turin Networks node. The

non-Turin Networks node would be using either 1+1 or BLSR, both of which are line switching. In neither

protection mode would the non-Turin Networks node react to the path AIS failure. To solve this problem,

the TE-2020 inserts an line AIS into the transparent K1/K2 channel.

Upon failure of a CCT or PLM whose facilities are providing K1/K2 transparency service, the TE-2020

inserts AIS-L into all transparent connections associated with facilities on the failed PLM. Upon failure of

a CCT, the peer CCT assumes responsibility for all transparent connections the failed CCT was providing

to its mate high speed PLM.

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Cisco 15454-DS1-14= - 1.544Mbps Expansion Module Manuel de service Page 105