Instruction manual

CIS ANI Digits Manipulation and Gateways Enhancements Page 1049 of 3156
Features and Services
The ANI size flexibility is not supported by the analog trunks (E3W, X3W).
For these type of trunks, the prompt ANSZ (Overlay 16) must be answered
with seven. CIS standards recommend setting ANSZ to seven for CIS DTI2
ANSZ prompt.
CIS Gateways Enhancements operating parameters
ANI is downloaded to the card only once and immediately after trunk seizure.
Thus calling number can be tandemed into ANI only if received before trunk
is seized. That means that the calling number must be received at the same
time that the called number or before enough digits of the called number are
received to seize the CIS trunk. In case of gateway ISDN interface/CIS
calling number (CLID) is always received before or at the same time as the
called number. In case of gateway R2MFC/CIS calling number (CNI) can be
received after trunk has been seized. Then incoming MFC route must be
configured to request CNI before enough digits of called number are received
to seize CIS trunk.
There is no cross checking of the ANI R_ENTRY associated with the route
against the ANI R_ENTRY in the customer Data Block. If an ANI
R_ENTRY is removed from the ANI table and the ANI R_ENTRY is stilled
assigned to a route, ANI in this case is built using the default R_ENTRY,
R_ENTRY number 0 and ERR9044 message is issued at call processing time.
While default R_ENTRY number 0 has not been configured, all its fields are
empty except ADDG whose default value is 8. Thus the ANI built using this
table is a repetition of 8. It is strongly recommended to configure this default
table as soon as ANIC prompt is set to yes on an outgoing CIS route.
It is possible to associate an undefined ANI R_ENTRY to a route. Then, when
constructing ANI if R_ENTRY is still undefined, default R_ENTRY number
zero is used and ERR9044 message is issued at call processing time.
Due to the independence between ANI table and outgoing CIS route, it is
possible to define a LEC, or ANDN greater than ANI size configured on
outgoing route. Then most significant digits will be truncated. The way it is
done is similar in case of call originated from a set or a trunk.