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106 Issue 1 April 1997
TN796B — Processor
■ Supports station adjuncts
■ Secondary lightning protection
■ Same premises, out-of-building support
■ Supports the 500-type, 2500-type, 7100-series, 8102-type,
and 8110-type telephones
The distance limit for the 500-type, 2500-type, and 7102A telephones
is 20,000 feet (6096 m). The distance limit for the 7101A and 7103A tele-
phones is 15,200 feet (4633 m). The distance limit for the 8100-series
telephones and the 9100-series telephones (not supported in the United
States) is 12,000 feet (3657 m). All distances are with 24-gauge wire.
■ Ringer load of 3
■ Supports simultaneous ringing on 8 ports.
The TN791 allows ringing on four ports of each half of the circuit pack for
a maximum of eight simultaneous ports ringing. A user attempting to ring
one half of the circuit pack when all four ports are busy receives a busy
tone.
TN796B — Processor 0
The TN796B Processor circuit pack manages the system and executes stored
programs to perform call processing and maintenance. The TN796B contains
a 16 MHz 386SX Intel central processing unit, 7 Mbytes of flash read-only mem-
ory for the system program, 4 Mbytes of random access memory for customer
translations, and an 80188 MTP. The MTP contains field upgradable 32 Kbytes
of random access memory, 64 Kbytes of flash read-only memory, a 1200/2400
bps modem, three serial ports, and the emergency transfer and power manage-
ment functions.
The TN796B is identical in function to the TN786B Processor circuit pack except
the CPP1 Memory circuit pack is not used.