ZyXEL Communications U-336E, Руководство пользователя

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Special Functions 39
commanded to answer or not answer any one of these four types of
ring signals. Following is a list of these four types of ring signals.
These are the ring types used in the USA. The difference among the
ring types is the two-second ON part of the ring signal. It
comprises a long, double short, or triple short ring.
S-register S40 bits 3-6 are used for distinctive ring control. Each
bit controls the answering of a particular ring type. Setting a bit to
“1” (on) enables answering, setting it to “0” (off) rejects the ring.
Note that the ring may still be heard even if it is not counted as an
accepted ring by the modem.
The control relationships between bits 3-6 in register S40 and the
different ring types are:
Type Bit
(on) Ring Sequence
1 3 1.2s or 2s on; 4s off
2 4 0.8s on, 0.4s off, 0.8s on; 4s off
3 5 0.4s on, 0.2s off, 0.4s on, 0.2s off, 0.8s on; 4s
off
4 6 0.3s on, 0.2s off, 1s on, 0.2s off, 0.3s on; 4s off
O O
N
OTE
: I
F ALL OF THESE BITS ARE
"0" (
OFF
),
ANY RING WITH A DURATION LONGER THAN
100
MS WILL BE ACCEPTED
. U
SE THIS DEFAULT IF YOU DO NOT HAVE
DISTINCTIVE RING SERVICE
.
If more than one type of Distinctive Ring is turned on, RING n will
be reported for an incoming ring signal where n is the ring type
number.
O O
N
OTE
: C
OUNTRIES OTHER THAN THE
U.S.
MAY HAVE DIFFERENT SPECIFICATIONS FOR
DIFFERENT RING TYPES
. T
HE MANUFACTURER MAY APPEND OTHER SETS OF
RING TYPE SPECIFICATIONS TO SUIT EACH COUNTRY
'
S NEEDS
.