Nortel DMS-100 Enhanced 911 Emergency Service Trunk Group Type

Enhanced 911 Emergency Service Trunk Group Type

Trunk group type E911 (Enhanced 911 Emergency Service) is used for dedicated 911 trunks that are incoming to a tandem office.

E911 type trunks support both Multifrequency (MF) and Dial-Pulse (DP) signaling formats.

If office parameter E911_PSAPS_USING_1_INFO_DIGIT in table OFCSTD (Office Standard) is set to "Y" (yes), datafill table E911NPD (Enhanced 911 Numbering Plan Digit) prior to datafilling field NPA in table TRKGRP (Trunk Group) for group type E911.

An Emergency Service Number (ESN) datafilled in the E911 trunk group data must also be datafilled in table E911ESN (Enhanced 911 Emergency Service Number).

Ensure that a default ESN for table TRKGRP and group type E911 is datafilled in table E911ESN.  Otherwise, calls on this trunk group cannot be routed and are sent to vacant code treatment.

Datafill

The following table lists the datafill for table TRKGRP, type E911.

----------------------------------------------------------------------------------------------
Field Descriptions - E911

Field    Subfield        Entry               Explanation and Action
----------------------------------------------------------------------------------------------
GRPKEY                   See Subfield        Group Key
                                             This field consists of subfield CLLI.
       
         CLLI            Alphanumeric        Common Language Location Identifier
                         (1 to 16            Enter the Common Language Location Identifier
		         characters)         (CLLI) name assigned to the trunk group in 
			                     table CLLI.
----------------------------------------------------------------------------------------------
GRPINFO                  See Subfields       Variable Group Information
                                             This field consists of subfields GRPTYP, TRAFSNO,
					     PADGRP, NCCLS, SNPA, ECPHTIME, ORIGHOLD, SDATA,
					     ANISEIZ, ANIPDIAL, ANIREQSG, ESCO, ESN, EXTSIG,
					     and PRTNM.

         GRPTYP          E911                Group Type
                                             Enter E911 to specify the group type for 
					     enhanced 911 emergency service.

         TRAFSNO         Numeric             Traffic Separation Number
			 (0 to 127)          Enter the incoming traffic separation number
					     assigned to the trunk group.  If a traffic 
					     separation number is not required, enter "0".

                                             If switching unit has feature package NTX085AA 
					     (Traffic Separation Peg Count), enter a number 
					     between 1 and the value of office parameter
					     TFAN_OUT_MAX_NUMBER in table OFCENG.


					     For switching units without feature package 
					     NTX085AA, enter 1 to 15.

                                             It is recommended that incoming and outgoing
					     traffic separation numbers 1 to 9 be reserved
					     for generic traffic separation numbers.

         PADGRP          Alphanumeric        Pad Group
                         (1 to 5             Enter the name of the pad group assigned to 
			 characters)         the trunk group in table PADDATA.

         NCCLS           NCRT                Operational Measurements No-Circuit Class
	                                     This field is not required for incoming trunk 
					     groups.  Enter "NCRT" (no circuit). 

         PRTNM           Vector              Pretranslator Name
	                 (up to 8            To activate this option, enter the value in table
			 characters)         STDPRTCT.  Then enter the data for field PRTNM in 
			                     table TRKGRP for the E911 MF trunk with that value.
					     The default datafill for an E911 MF trunk is "NPRT" 
					     (Nil Pretranslator).

         SNPA            Numeric             Serving Numbering Plan Area
	                 (5 digits)          Enter the serving NPA of the E911 trunk group that
			                     has a Numbering Plan Digit (NPD) datafilled in
					     table E911NPD.
         
         ECPHTIME        Mumeric             Enhanced Called Party Hold Time
	                 (0 to 255)          This entry indicates the number of seconds ECPH is
			                     active.

         ORIGHOLD        Y or N              Originator Hold
	                                     If the end office at which this trunk originated
					     supports the operator hold function.  Otherwise,
					     enter "N" (no).

         SDATA           See Subfields       Signaling Data
	                                     This field consists of subfield SIGFMT and 
					     refinements.

         SIGFMT          AMR4, AMR5,         Signaling Format
	                 or BELL             Enter the format of the Automatic Number 
			                     Identification (ANI) information that is incoming
					     on the trunk.

	                                     If the format type is AMR4, enter "AMR4" and 
					     datafill refinement NCATDIGS.

	                                     If the format type is AMR5, enter "AMR5" and
					     datafill refinement NCATDIGS.

					     If the format type is BELL, enter "BELL" and
					     datafill refinement INFODIGS.

         NCATDIGS        Numeric             Number of Category Digits
	                 (2 or 3 digits)     Datafill this field if the value in field SIGMT 
			                     is AMR4 or AMR5.
	                                     
					     Enter the number of category digits expected 
					     along with the ANI.
        



         INFODIGS        Numeric             Information Digits
	                 (1 or 2 digits)     Datafill this field if the value in field SIGMT
			                     is BELL.

	                                     Enter the number of information digits expected 
					     along with the ANI.

         ANISEIZ         Numeric             ANI Seizure Timing
	                 (2 to 30)           Enter the time, in seconds, that the trunk waits
			                     for reception of the first ANI digit or signal 
					     after the ANI request signal.

         ANIPDIAL        Numeric             ANI Partial Dial Timing
	                 (2 to 30)           Enter the time, in seconds, that the trunk waits
			                     for reception of each ANI digit or signal after
					     the first digit.

         ANIREQSG        REV or WK           ANI Request Signal
	                                     Enter "REV" to specify that a reversal signal is
					     used to request ANI information.  This entry value
					     is used for multifrequency or dial-pulse signaling.

	                                     Enter "WK" to specify that a wink signal is used 
					     to request ANI information.  This entry value is 
					     used for Public Safety Answering Point (PSAP)
					     signaling.

         ESCO            Numeric             Emergency Service Central Office
	                 (0000 to 9,999)     Enter the number representing the end office at
			                     which the E911 trunk originated.

         ESN             Numeric             Emergency Service Number
	                 (000 to 15,999)     Enter the number associated with the Emergency 
			                     Service Zone (ESZ).  This number is used to obtain
					     the Directory Number (DN) of the primary PSAP to 
					     which the call is routed by default.

         EXTSIG          Y or N              Extended Signaling
	                                     Enter "Y" to specify that the trunk uses the 
					     extended signaling protocol.  Enter "N" to turn
					     off this option.

         ACKWINK         Y or N              Acknowledgment Wink
	                                     Enter "Y" to receive an ACKWINK on incoming 
					     wireless calls over MF trunks to the E911 tandem.
					     The E911 tandem receives the ACKWINK after
					     receiving digits.

	                                     The default setting is "N".  To change the ACKWINK 
					     field to "Y", set the EXTSIG field to "Y".

         OFBSR           Y or N              Off-Board Selective Routing Database
	                                     Enter "Y" if facility uses the OFBSR for 
					     translations and routing of both MF and ISUP
					     E911 trunks.         
----------------------------------------------------------------------------------------------
-End-




Datafill Example

The following example MAP display shows sample datafill for table TRKGRP, type E911.



GRPKEY        GRPINFO
_______________________________________________________________________________
E911WRLS      E911 20 ELO NCRT NPRT 613 Y 123 Y BELL 2 10 10 REV 0849 321 Y   $
E911ICNG      E911 0  ELO NCRT P621 613 Y 123 Y AMR4 3 10 10 REV 0847 005 N   $


The following example show sample datafill for table TRKGRP, type E911 using the OFBSR subfield for a MF trunk.


GRPKEY        GRPINFO
_________________________________________________________________________________
E911ICMF      E911 20 ELO NCRT NPRT 613 613 Y 0 Y BELL 1 10 10 REV 0692 111 N N $