Maintenance-Object Repair Procedures
555-233-143
8-1660 Issue 1 May 2002
The TN2182 is a combined Tone-Clock/Detector circuit pack, providing
Tone-Clock functionality to a non-IPSI EPN. It provides 8 Enhanced Tone
Receiver (ETR) ports. Each of these ports combines the individual capabilities of
a DTMR-PT, a GPTD-PT, and a CLAS-PT. Thus, each TN2182 port offers any
tone-detection function previously provided by a TN748, TN420, or TN744 Tone
Detector board.
The TN2182 also provides either Mu-law or A-law tone detection.
Since the TN2182 also provides Tone-Clock function for non-IPSI port networks,
only one (or two if your system is duplicated) TN2182 circuit packs may reside in a
EPN. If more tone-detection resources are needed, the additional resources must
be provided by TN748, TN420, or TN744 circuit packs.
Tone-Clock and the Reliability Configuration
In IPSI-connected port networks, the Tone Clock circuit is found on the IPSI circuit
pack. In non-IPSI-connected port networks, there is a Tone Clock circuit pack. The
following sections describe the relationship between the various reliability options
and the IPSIs or Tone Clock circuits.
S8700 Multi-Connect architecture has three items that can be duplicated: server,
IPSI, and PNC. Note that duplicated control networks and duplicated IPSIs go
together (that is, when the IPSIs are duplicated, the control networks must be
duplicated). While all items can be independently duplicated, the combination of
duplicated bearer networks (PNCs) and unduplicated control networks is not
allowed. See Table 8-646 below:
Duplex-Reliability Configuration
The duplex-reliability configuration shown in Figure 8-98 has a duplicated server,
an unduplicated control network, unduplicated IPSIs in the IPSI-connected port
networks, and an unduplicated bearer network. Therefore the Tone Clock is not
duplicated in the IPSI-connected port network. In the non-IPSI-connected port
network, the Tone Clock boards are also not duplicated.
Table 8-646. S8700 Multi-Connect Reliability Configurations
Configuration Server
Control Network
and IPSI
Bearer
Network
Duplex Reliability Duplicated Unduplicated Unduplicated
High Reliability Duplicated Duplicated Unduplicated
Critical Reliability Duplicated Duplicated Duplicated
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