From ptownson@massis.lcs.mit.edu Mon Aug 12 23:59:00 1996 EDT
From: TELECOM Digest Editor <ptownson@massis.lcs.mit.edu>
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" <bmkrupic@noctrl.edu>
Subject: 911 Check List for NCC
North Central College
PS/ALI
Expanded 911
Implementation Check List
Printed: August 8, 1996
Brian M. Krupicka
630-637-5451
E-mail - bmkrupic@noctrl.edu
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
residential.
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
characters.
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.
ROUT EL TRK MGR ---SCHEDULES--- AO AU ON OFF ORD APL
INFORMN
TRK SCC SVC SVC
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
PLAN NUMBER: 35 | OFFICE CODE FIELD IDX : NONE
| TYPE OF NUMBER : UNKNOWN
| NUMBERING PLAN ID : PRIVATE
----------------------------------------------------------------------
------------------------------------------------
DIGIT ANALYSIS GROUP : 0
ROUTE : 13
ACCOUNT FLAG :
USER AUTHORIZATION : 0
----------------------------------------------------------------------
-----------------------------------------------
| DIGIT PATTERN : 9-11-Z
| AREA CODE FIELD IDX : NONE
PLAN NUMBER: 36 | OFFICE CODE FIELD IDX: NONE
| TYPE OF NUMBER : UNKNOWN
| NUMBERING PLAN ID : PRIVATE
----------------------------------------------------------------------
------------------------------------------------
DIGIT ANALYSIS GROUP : 0
ROUTE : 0
ACCOUNT FLAG :
USER AUTHORIZATION : 0
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
printed.
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
Telident
One Main Street SE
Suite 85
Minneapolis, MN.
Phone: 800-536-4911
612-623-0911
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
51-150
151-300
301-500
501-750
751-1000
1001-1500
1501-2000
2001+
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
function.
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
P.S.A.P.'s"
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
programming
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
502-589-2848
FAX: 502-589-5023
Tele-Studies, Inc.
51 Shore Drive, South Suite
BurRidge, IL. 60521
Phone: 708-655-8787
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