From Mon Aug 12 23:59:00 1996 EDT
From: TELECOM Digest Editor 
Newsgroups: comp.dcom.telecom
Subject: 911 Check List For North Central College 
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Date: Tue, 13 Aug 1996 00:05:00 EDT
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 Date: Mon, 12 Aug 96 08:26:58 cST
 From: "Brian M Krupicka" 
 Subject: 911 Check List for NCC

                                        North Central College
                                        Expanded 911
                                        Implementation Check List
                                        Printed: August 8, 1996
                                        Brian M. Krupicka
                                        E-mail -
A 1995 State of Illinois law requires integration of colleges' and 
universities' telephone systems with the E911 emergency service 
dispatcher center, by July 1, 1995. 
After June 30, 1995, an entity that provides or operates "private
residential switch service" and provides telecommunications facilities
or services to residents shall provide to those residential end users
the same level of 9-1-1 service as the public agency and the
telecommunications carrier are providing to other residential end
users of the local 9-1-1 system.  This service shall include, but not
be limited to, the capability to identify the telephone number,
extension number, and the physical location that is the source of the
call to the number designated as the emergency telephone number."
Note: private residential switch service typically includes, but is
not limited toapartment complexes, condominiums, and campus or
university environments where shared tenant service is provided and
where the usage of the telecommunications service is primarily
North Central College (NCC) has a Rolm 9751 series 9006 telephone 
system, with Release 6.2 software. It was installed in the summer of 
1995.  The Illinois state law, in effect at that time, required all 
new PBX's installed after July 1, 1995 to have direct integration and 
user profile information reporting with the local E911 P.S.A.P.  The 
local telephone company (Ameritech) uses CAMA type signaling for 
integration. An Ameritech 911 tandem routes calls coming from the 
PBX's and directs these calls to the correct P.S.A.P.  There are two 
parts to performing the E911 requirements.  Part one is to provide the 
caller direct routing when dialing 911 or 9-911.  The second part is 
to provide the users profile information (i.e.: name, address, 
telephone number etc.) via an Ameritech software package called 
PS/ALI.  My thanks goes out to a number of people at Ameritech's 
technical assistance center and the Ameritech 911 project team for 
making this integration happen.
The following items are required in order to implement the PS/ALI, 
Expanded 911 service.
1)  All buildings are required to have an address approved by the 911 
emergency services provider.  These address can be obtained from your 
electric, gas, or water bills.  The city Department of Engineering 
should provide a new address within 5 to 10 working days.  The city 
Department of Engineering will notify all city departments and the 911 
emergency services provider of new addresses.  You will be responsible 
for all other notifications (i.e.: Post Office, telephone, electric, 
and gas companies, etc.).  Only previously approved addresses can be 
entered in the PS/ALI address database.
NOTE: It is best to check two or more sources for address accuracy.
2)  Each telephone station user's location will require a designation, 
such as a room and floornumber.  These designations should be 
consistent in design and clearly mounted.
Note: This information will be entered in the PS/ALI "Location 
Information" database.The database has a field for 20 alphanumeric 
3)  A telephone station user should be able to dial 9-911 or 911 from 
any telephone.  Theprimary routing for these calls should be via CAMA 
trunks, in order to deliver telephone station user information to the 
emergency services dispatcher.  Alternate 911 routing should be 
established via central office trunk lines.  Alternate routing will 
secure a higher level of reliability.  These CAMA trunks will only 
carry 911 traffic.
4)  Determine the number of CAMA trunks needed to handle the 911 
traffic volume.  Your Ameritech 911 project manager will assist you in 
determining the number of CAMA trunks required.  CAMA circuits will be 
invoiced on a separate Ameritech account.
Note: Once the PS/ALI service agreement is signed, the 911 project 
manager will order the required CAMA circuits.  911 CAMA circuits are 
NOT ordered from your Ameritech Services Coordinator. 
5)  The requirement for integration between the Rolm and the Ameritech 
911 tandem is a minimum of two CAMA trunk connections.  This 
integration could be via:
Two 4-wire E&M trunk ports via two trunk cards.
Note: Using two separate trunk cards increases overall reliability.
6)  All telephones having access to 911 dialing must have a telephone 
extension number which complies with the Ameritech numbering plan. 
This could be Centrex or direct-in-dial numbers.  The numbering 
information contained in the Ameritech dialing plan and your telephone 
systems numbering plan must be the same.  If there was a difference, 
the number received at the Emergency Services Dispatcher Center could 
be falsely identified and responding emergency personnel could be 
dispatched to the wrong location.  The PS/ALI software will not accept 
telephone numbers which do not comply with both numbering plans.
Note: If multiple NXX's are used in the same telephone system, then 
adjunct hardware is required to provide for digit to NXX manipulation.
7) Secure a list of all D.I.D. number blocks from your Ameritech
service records, your Ameritech monthly invoices or from your
Ameritech customer service representative. Even though you may have a
list of D.I.D. extension numbers for individual telephones, you need
to know the blocks of D.I.D. numbers you have available for your use.
This information needs to be provided to the Ameritech 911 project
manager prior to entering any telephone extension in the PS/ALI
telephone record database.
8)  The Rolm system does not have direct CAMA connectivity.  The Rolm 
PBX requires aE&M to CAMA interface unit in order to make a connection 
to the Ameritech 911 tandem.  Several interfaces options are available 
and range from $2,000.00 to $25,000.00.   The Rolm installation team 
selected a Telident solution which cost approximately $13,000.00.  The 
Telident unit provides:
  two E&M to CAMA conversion circuits
  four digit to seven digit conversion
  CAMA line status reporting
9)  The Rolm PBX uses two of four ports on a TMEMUS (Q2469) Analog tie 
trunk E&Mcard.  This card is programmed to out-pulse the users four 
digit extension number to the Telident S.T.S. unit.  The Telident unit 
then converts the call to the correct CAMA "KP" signaling format and 
adds the NCC prefix to the callers extension number before it is sent 
to the  Ameritech 911 tandem.
10)  The following is an example of the Rolm PBX system programming.
The NCC "LCR Route Definition Table" used by the PBX to route the 911 
calls to the Telident unit.  It also denotes an alternate route if the 
two CAMA trunks are busy or the Telident unit or the CAMA trunks are 
not functioning correctly.
NUM   M   GRP  IDX    A B C D E F G H   RT   TH  Q     Q      NUM  TYP 
TRS  CAP  SIG   ID      VCE  N-V
13         1      5        15       X                            1     
 0      N     N     13        V      S3                 
TIE            NON  NON
             2      3          1       X                            1  
    0      N     N       2        V      S                    
PRI           NON  NON
             3      2          2       X                            1  
    0      N     N       2        V      S3                 
CO             NON  NON
The following is an example of the NCC "Trunk Group" information for 
trunk group 5 which is the E&M trunk group connected to the Telident 
S.T.S. unit.
| PEN: 1-6-31-0            INS: Y          BOARD: TMEMUS   DEV: TSEMW  
           TGRP: 5            |
|  TRKID           :  111                  TCCID:                      
|  CCT                     :         /111                              
|  ACDATA  : 0             DPLN            : 0             PFDGT       
|  ATNTYP  : TIE           EXPDG    10             PTTBLIDX        :   
|  COPNO   : 5             ITR             : 0             REMANA  :   
|  COSNO   : 22            LCRCOSD : 5             RULEIDX :           
|  COTNO   : 55            LCRCOSV : 5             SPECDEV :           
|  DITIDX  : 0             LOCANA  :       TRTBL   :       DIDCR:
The following is an example of the NCC "Dialing Plan" information.  
When the system first went into service the local P.S.A.P. received 
100 to 150 false calls per month.  False calls are defined as 7 or 8 
seconds in duration, and would display the NCC default telephone and 
default address at the P.S.A.P. reporting console.  These false calls 
would not provide voice traffic.  To rectify this the following 
dialing plans were programmed into the Rolm system.  After this was 
done the P.S.A.P. did not receive any false calls and our normal call 
volume went down to two or three a month.
                           | DIGIT PATTERN         : 9-11-T
                           | AREA CODE FIELD IDX   : NONE
                           | TYPE OF NUMBER        : UNKNOWN
                           | NUMBERING PLAN ID     : PRIVATE
ROUTE                      : 13
ACCOUNT FLAG               : 

                           | DIGIT PATTERN         : 9-11-Z
                           | AREA CODE FIELD IDX   : NONE
                           | TYPE OF NUMBER        : UNKNOWN
                           | NUMBERING PLAN ID     : PRIVATE
ROUTE                      : 0
ACCOUNT FLAG               : 
The "T" in the dialing plan, above, represents interdigit time-out and 
the "Z" in the dialing plan represents one or more digits followed by 
a interdigit time-out.  When a user dials the digits 911 the Rolm 
system waits 2 seconds to determine if any additional digits are 
dialed, if not the call is directed to route 13 and the call is 
presented to the Telident S.T.S. for processing to the P.S.A.P.  If 
the user dials, as an example, the digits 9112-555-1212 or 9112 
(instead of 9-1-312-555-1212) the PBX system waits 2 seconds after the 
finial digit is dialed. The call is then directed to route 0 and the 
call is provided with reorder tone.  This solved 99 percent of the 
false calls to the P.S.A.P.
11)  The following is an example of the Telident programming and setup
The Telident's 9-1-1 Station Translation System (STS) solves the 
interfacing problem between the Rolm PBX and the P.S.A.P.  The Rolm 
does not have direct CAMA configurable trunks, so an interface is 
required.  The STS provides for two types of translations. The first 
converts the PBX tones and signals to those required by the P.S.A.P.  
The second converts PBX station numbers to seven-digit numbers that 
can be used for call-back and/or proper indexing to PS/ALI database.  
With NCC we needed to convert the caller four-digit station number 
(5451) to a seven-digit number (637-5451).  The extra digits (637) was 
the callers prefix.
The Telident S.T.S. programming on the E&M line side was straight 
forward and was done from the manuals provided.  NCC did need to 
program all D.I.D. number ranges and provide conversion to D.I.D. 
numbers for all non-D.I.D. NCC extensions. A default number telephone 
number was also programmed for any PBX assigned number not covered in 
the Telident database.
12)  The Telident S.T.S. does have the ability to output event 
information to a serial port.This information was valuable in 
determine the false call problem.  However the Telident S.T.S. 
out-pulses "idle" event information every 5 minutes on each channel.  
NCC did write a program which resides on a P.C. to receive and review 
the event information from the Telident S.T.S. serial port.  All event 
information, other than the "idle" event messages, is logged by month 
and printed. The event information from the Telident S.T.S. does not 
contain the time and date.  This to was added to the log file and 
   The following is an example of the logged and printed messages:
   06-05-1996  19:54:07
   [  1001  1  0005863  637-5863  Call Started           Valid ANI
   06-05-1996  16:56:16
   [  1021  1  0005863  637-5863 Call Ending               Call 
     duration 00:02:11
The event information example noted above states a 911 directed call 
was placed from telephone number 637-5863 at 7:54:07 P.M. and lasted 2 
minutes and 11 seconds.
Telident does have a software package for this and other application 
reporting, however the  cost benefit ratio was high.
13)  Other type of optional adjunct hardware is available in order to 
provide on-site notification of a 911 call while the call is being 
processed.  Each of the adjunct vendors will provide different 
features and options.  The following is a list of available providers.
           Northern Telecom
           Private 911 - Visit
           2221 Lakeside Blvd.
           Richardson, TX. 75082-4399
           Phone:    800-NORTHERN
           Digital Techniques, Inc
           402 West Bethany Road
           Allen, TX. 75002
           Phone:    800-634-4976
           Proctor & Associates
           15050 NE 36th Street
           Redmond, WA. 98052
           Phone:    206-881-7000
           FAX:      206-885-3282
           Tel Control, Inc.
           P.O. Box 4031
           Huntsville, AL. 35815-4031
           Phone:    205-881-4000
           Fax:        205-881-4971
           One Main Street SE
           Suite 85
           Minneapolis, MN.
           Phone:    800-536-4911
           FAX:      612-623-0944
14)  P.S.A.P. automatically looks up the incoming telephone number in 
a master database and displays this information on the P.S.A.P. 
operator CRT.  NCC needed to enter this information when the system 
first went into effect and needs to maintain this information database 
as adds, moves, changes or deletions are made.  This software package 
is marketed by Ameritech as "PS/ALI".  It cost NCC $6,500.00 for 1,500 
to 2,000 numbers and 198.00 per month software maintenance.
A PS/ALI service agreement/quotation must be obtained from your 911 
Ameritech project manager.  They can be reached at 1-800-432-3911.  
You need to inform your 911 project manager which one of the following 
telephone stations categories best represents your telephone PBX 
system.  A PS/ALI Service Agreement/quotation will then be developed. 
                Number of Stations
                0 -50

Note: When determining the size of PS/ALI software required, count 
only stations which have access to 911 services.  Do not count modems 
(without telephones), incoming only FAX machines, internal intercom 
numbers, phantom DN's, etc.
The PS/ALI software resides on a local P.C. at NCC with the following 
requirements is required:
           486/66 or better processor
           8 Mbytes of memory
           50 Mbytes of free disk space
           Hayes-compatible, 14.4 Kbps error-correction modem
           VGA or better monitor and graphics card
           Microsoft Windows Environment operation system
           Microsoft Windows version 3.1 or later
NOTE: This P.C. does not need to be a dedicated computer for this 
This P.C. is used for maintaining the addresses and telephone user 
database information.  The information is then downloaded to the 
Ameritech ALI database.
A POTS line is required for the P.C's. modem.  This should be
installed and working prior to delivery of the PS/ALI software.  This
POTS line needs 800 calling access, only.
The following example of information is entered for every user in the 
PS/ALI database.
           Telephone number:               708-637-5141
           Address:           The address and city are preprogrammed and  
                                           selected as needed
           Location information:           1st Floor,  Room 10C
           Additional information: "Note: currently not used by the 
           Customer name:          North Central College, Carnegie Hall
This information once compiled needs to be downloaded to the master 
Ameritech 911 database.
15)  The following summary reflects the cost to implement 911 service 
at NCC.  It is dividedinto two parts, A) up-front cost and B) monthly 
reoccurring costs.
   A) Up-front costs include:
   The PS/ALI software cost was determined by the 
           number of stations.                    Ameritech  $  6,500.00
   The Telident "STS" signal conversion unit      ROLM       $ 13,000.00
   The two E&M tie trunk card      (installed)    ROLM       $  1,750.00
   The installation of two CAMA trunks            Ameritech  $  1,101.00
   B) Monthly reoccurring costs
   The PS/ALI software maintenance fee and ANI record 
           storage fee. (Monthly)                 Ameritech  $ 198.00
   The two CAMA trunks                             Ameritech $ 185.00
        Monthly maintenance cost for the two Tie line cards  $  20.00
16) It is difficult to determine the total labor hours which went into
getting this service functioning.  The following is an accumulation of
the several peoples best estimates and represents only NCC labor.
Ameritech and Rolm had additional labor hours.
The PS/ALI software took 40 hours to implement and takes 1 to 2 hours 
a week to maintain.
The Telident "STS" database took 10 hours to implement and 1 to 2 
hours a month to maintain.
17)  The following implementation and installation contractors can 
perform some or all of the following:
                consulting services
                911 on-site system design      
                address validation or acquisition 
                user database collection 
                telephone system CAMA trunk installation and software 
                PS/ALI address and station user database programming 
                CAMA trunk installation and system testing
                B&B Electronics
                2717 Bordeaux Place
                Lisle, IL. 60532
                Phone: 708-961-1243
                Cable Engineering, Inc.
                P.O. Box 4086
                Louisville, KY. 40204
                Phone:    800-626-2715
                FAX:      502-589-5023  
                Tele-Studies, Inc.
                51 Shore Drive, South Suite
                BurRidge, IL. 60521
                Phone:    708-655-8787