AT&T 555-230-520 Medical Alarms User Manual


 
Considerations for the Call Vectoring Features
C-6 Issue 4 September 1995
taken by the adjunct is to drop one party on the call, the switch will drop
the other party as well and clear the call (it cannot retain a call with only
one party, if there is no Return Destination for further processing).*
User Scenario — Remote Access with Host
Provided Security
A customer may use the VDN Return Destination feature to provide a more
flexible remote access feature together with host based call security. The remote
user/caller does not have to call back into the switch when multiple destinations
need to be reached nor does the caller have to enter his/her identification every
time a new destination is desired. For example, a customer can program the
following vector that is accessed by dialing a VDN that has a Return Destination
administered.
Figure C-1. Sample Return Destination Vector with Remote
Access
In this scenario, a remote caller will call into the switch by dialing the VDN
administered with the Return Destination. The vector executed will prompt the
caller to enter an identification number and a password that will be passed, via
the adjunct routing vector command, to the host for validation. The host can keep
track of invalid attempts or decide to de-activate or activate certain identification
numbers based on customer set criteria.
After the host based security is passed (the host sends an Abort to cancel the
switch Route request; otherwise, the host routes the call to an exception
destination/VDN), the switch will collect digits for the destination that the caller
wants to reach (vector step 4 above). The host receives the number entered by
the caller (vector step 5 above) and validates the entered number to check if the
caller is allowed to reach the specified destination. If so, the host routes the call
to the desired (dialed) destination.
1. collect 8 digits after announcement 1001 ("Please enter
your identification number and password followed by # sign")
2. adjunct routing link 1221
3. wait-time 6 seconds hearing silence
4. collect 16 digits after announcement 1002 ("Please enter the
telephone number of your destination followed by # sign")
5. adjunct routing link 1222
6. wait-time 6 seconds hearing silence
7. disconnect after announcement 1003 ("We are sorry, but we are
experiencing technical difficulties at this time, please try
again later")