Lucent Technologies DEFINITY Enterprise Communication Server Release 8.2 Administrators Guide

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1327 Extended User Administration of Redirected Calls 
20
Emergency Transfer panels are available in multiples of five telephones, which 
may be pulse-dialing or touch-tone phones. You must use pulse dialing if the CO 
accepts dial pulses only. Each telephone can be connected to a separate CO.
When your system is not in Emergency Transfer mode, transfer phones can be 
used as regular telephone.
Interactions
nNight Service
If a power failure occurs when the system is in night service, the system 
automatically returns to night service when power returns.
Extended User Administration of 
Redirected Calls
Extended User Administration of Redirected Calls allows you to change your 
lead-coverage path or your call forwarding from any local (on-site) or remote 
(off-site) location.
!SECURITY ALERT:
Invalid extensions and invalid station security codes are logged as security 
violations. The extension or incoming trunk from which the command 
sequence was dialed, the Feature Access Code (FAC), and the dialed 
command string appear on the Monitor Security-Violations Station Security 
Codes screen or report if Security Violation Notification is enabled.
For administration information about tracking security violations, refer to 
‘‘
Setting up security violations notification’’ on page 328.
Detailed description
This feature does not change Call Coverage, nor does it change Call Forwarding 
All Calls or the Call Forwarding Busy/Don’t Answer. It merely allows you to 
select between one of two previously administered coverage paths or to change 
your forwarding from any on-site or off-site location.
Telecommuting access extension
The telecommuting access extension allows you to use Extended User 
Administration of Redirected Calls from off-site. If you want to quickly disable 
the feature for all users, change the Telecommuting Access Extension to blank.  
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1328 Extended User Administration of Redirected Calls 
20
If you are operating in a Distributed Communications System (DCS) 
environment, you need to assign a different telecommuting-access extension to 
each switch and tell your users which extension they should use. You can use 
Extended User Administration of Redirected Calls from any of the DCS nodes, 
but you need to dial the telecommuting-access extension of the node on which 
your station is defined before using the feature access code.
Extended User Administration of Redirected 
Calls and COS
The following table shows the relationship between class of service (COS) and a 
your ability to use call forwarding at the your station without a security code or 
from any on-site or off-site location with a security code.
COR
Class of Restriction (COR) controls the use of the change coverage option of 
Extended User Administration of Redirected Calls. This means that, if the Can 
Change Coverage field on the COR screen is set to 
y, you can use the Change 
Coverage FAC to change your coverage option.
How to use from an attendant or 
console-permissions station
To use Extended User Administration of Redirected Calls from an attendant or 
console-permissions station is the same as that described for a user, except 
console-permissions stations and attendants do not need to enter a station security 
code, nor do they need to press the pound key (#).
Table 49. COS and Extended User Administration of Redirected Calls of Call 
Forwarding
If the user’s COS are set to these values Then the user’s call forwarding capability 
is
Call 
Fwd 
All 
COSCall 
Fwd 
B/DA 
COSExtended 
Call Fwd 
Activate 
All COSExtended 
Call Fwd 
Activate 
Busy D/A 
COSUsers can 
forward calls 
from their station 
without a 
security codeUsers can forward 
calls from their 
station or from 
another location with 
a security code
Yes Yes Yes Yes Yes Yes
No No Yes Yes No Yes
Yes Yes No No Yes No 
						

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Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1329 Extended User Administration of Redirected Calls 
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How to use from an off-site location
To use Extended User Administration of Redirected Calls from off-site, you must 
first access the telecommuting-access extension. If you make the request via 
Direct Inward Dialing (DID), you must precede the extension with the correct 
public-network prefix. If you make the request via a trunk group dedicated to 
remote access of this feature, you must dial the public-network number for the 
trunk group.
The system provides dial tone after you access the telecommuting access 
extension. At that point you can enter only one of the four FACs associated with 
this feature. The 4 FACs associated with Extended User Administration of 
Redirected Calls are:
nExtended Call Fwd All Activate
nExtended Call Fwd Busy D/A Activate
nExtended Call Fwd Deactivation
nChange Coverage
When the system provides dial tone, you can proceed with the steps outlined for 
on-site use of the feature in ‘‘
Training users’’ on page 301.
How to interrupt the command sequence
To interrupt the command sequence and begin again, you can enter an asterisk (*) 
at any point before the second pound sign. The system provides dial tone, and you 
can begin the command sequence at the point of entering your extension. (You 
should not enter the FAC again.) The interrupted command sequence is not 
recorded as an invalid attempt.
Interactions
nBridged Appearance
When the pound key (#) is pressed from a bridged appearance immediately 
following any of this feature’s four FACs, the system assumes the currently 
active bridged extension will be administered. The station security code of 
the currently active bridged extension must be entered after the initial # to 
successfully complete the command sequence.
If the station has only bridged appearances, the station’s extension must be 
dialed after the FAC to successfully complete the command sequence, 
since the station’s extension is not associated with any appearances. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1330 Extended User Administration of Redirected Calls 
20
nCall Coverage
Extended User Administration of Redirected Calls interacts with this 
feature only in that system users can change their lead-coverage path.
An attempt to activate Send All Calls is denied if the currently active 
coverage path does not allow Send All Calls in its coverage criteria. 
However, if you activate Send All Calls when it is allowed, and then change 
your coverage path to one that does not allow Send All Calls, the Send All 
Calls button remains lit and Send All Calls automatically resumes if you 
change back to the coverage path that allows it.
nCall Forwarding 
When Call Forwarding is active, the status lamps for the active features for 
that extension are lit. When Call Forwarding is deactivated, the status 
lamps for both Call Forward All and Call Forward Busy/DA buttons for 
that extension are extinguished. Off-net forward destinations are not 
allowed.
nDistributed Communications System
Assign a different telecommuting access extension for each switch. You 
can use Extended User Administration of Redirected Calls from any of the 
DCS nodes, but you must dial the extension of the node on which your 
station is defined before dialing the FAC.
nSecurity Violation Notification
Extended User Administration of Redirected Calls security violations are 
tracked and reported by SVN for station security codes, if it is enabled.
nTenant Partitioning
The telecommuting access extension is always automatically assigned to 
Tenant Partition 1, so it can be accessed by all tenants.
The tenant number of the extension administered must be accessible by the 
tenant number from which the Extended User Administration of Redirected 
Calls FAC is dialed or the request is denied. If the FAC is being dialed on 
site, the tenant number of the station or attendant must have access to the 
tenant number of the extension administered. If the FAC is dialed off site, 
the tenant number of the incoming trunk must have access to the tenant 
number of the extension administered.
Related topics
Refer to ‘‘
Setting up telecommuting’’ on page 285 for information about 
configuring telecommuting. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
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Features and technical reference 
1331 Facility and Non-Facility Associated Signaling 
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Refer to ‘‘Telecommuting Access’’ on page 951 for information about and field 
descriptions on the telecommuting screen.
Refer to ‘‘
Remote Access’’ on page 857 for information about and field 
descriptions on the Remote Access screen.
Refer to ‘‘
Setting up remote access’’ on page 297 for information about 
configuring remote access.
Refer to ‘‘
Feature Access Code’’ on page 619 for information about and field 
descriptions on the Feature Access Code screen.
Refer to ‘‘
Class of Service’’ on page 532 for information about and field 
descriptions on the Class of Service screen.
Refer to ‘‘
Station’’ on page 882 for information about and field descriptions on 
the Station screen.
Refer to ‘‘
Class of Restriction’’ on page 520 for information about and field 
descriptions on the Class of Restriction screen.
Refer to ‘‘
Setting up call forwarding’’ on page 292 for information about 
configuring call forwarding.
Refer to ‘‘
Assigning coverage options’’ on page 291 for information about 
assigning two coverage options.
Facility and Non-Facility Associated 
Signaling
Facility Associated Signaling (FAS) allows an ISDN-PRI T1/E1 interface 
D-channel to carry signaling information for all the bearer (B) channels on its 
associated span.
Non-Facility Associated Signaling (NFAS) allows 1 ISDN-PRI T1/E1 interface 
D-channel to carry signaling information for up to 300 bearer (B) channels on its 
associated spans. In other words, a D-channel can carry signaling information for 
numerous B-channels located on different DS1 circuit packs.
NOTE:
NFAS is only valid for T1/E1 Country Protocol 1. Digital T1 service is also 
sometimes called “DS1” to distinguish it from analog T1 service.
ISDN-BRI trunks don’t support Non-Facility Associated Signaling. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1332 Facility and Non-Facility Associated Signaling 
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Brief Description
D-Channel Backup with NFAS
When NFAS is used, a backup D-channel can be administered to improve 
reliability. The system switches to the backup D-channel if a signaling link failure 
occurs on the primary D-channel span.
One D-channel is administered as the Primary D-channel and another D-channel 
is administered as the Secondary D-channel. These assignments ensure that both 
D-channels are in the same state at the same time and neither can be used to carry 
B-channel traffic at any time. The Primary D-channel is given precedence over the 
Secondary D-channel.
When D-Channel Backup is activated, all calls that have been answered are 
preserved. However, some call-related information may be lost. Calls that are not 
answered when D-channels are switched also may lose call-related information.
The figure below shows a possible configuration involving 3 ISDN-PRIs between 
a DEFINITY ECS and another DEFINITY ECS or the public network. 
With T1 (24 channel) interfaces, 2 of the ISDN-PRIs contain a D-channel and 23 
B-channels, while the other ISDN-PRI contains 24 B-channels. One of the 
D-channels is the Primary D-channel, and the other is the Secondary D-channel. 
Figure Notes
1. DEFINITY ECS
2. Secondary D-Channel
3. Primary D-Channel4. ISDN-PRI controlled by D-Channel
5. Network Far-End Switch DEFINITY ECS
r781799 CJL 060996 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1333 Facility and Non-Facility Associated Signaling 
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Together, this pair of D-channels signals for all 70 (23+24+23) B-channels in the 
3 Primary Rate Interfaces.
Since the D-channels are signaling for more than one ISDN-PRI facility, 
D-Channel Backup requires the use of NFAS. At any given time, one of the two 
D-channels is carrying Layer 3 signaling messages, while the other D-channel is 
active at layer 2, but in standby mode only. Any layer 3 messages received over 
the standby D-channel are ignored. Since only one of the D-channels can be active 
at a time, load sharing between the two D-channels is not possible. The two 
D-channels can provide signaling for only a predefined set of B-channels and 
cannot dynamically backup other D-channels on other interfaces.
D-Channel Backup activation
nD-Channel Failure
If the signaling link fails on the active D-channel (D1) or the hardware 
carrying D1 fails, the system sends a message over the standby D-channel 
(D2). D2 then becomes the active D-channel and carries all subsequent 
signaling messages. When the signaling link or hardware on D1 recovers 
from the failure, D1 becomes the standby D-channel.
nSystem Technician Commands
If a system technician commands that a D-channel switchover take place, 
the first action taken by the system is to tear down the signaling link on D1. 
After this is completed, a message is sent on D2 to request that D2 become 
the active D-channel. D2 then becomes the active D-channel and the 
switchover is complete.
Screens used to administer FAS and NFAS
The following list shows the required screens and the fields you must use on each 
screen:
nSignaling Group (Refer to the DEFINTY services documentation for 
information about this screen.)
—all
nISDN trunk group
—Port
—Sig Grp
nDS1 Circuit Pack
— Signaling Mode 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1334 Facility and Non-Facility Associated Signaling 
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Guidelines for administering FAS and NFAS
Coordinate the following when implementing FAS and NFAS:
nDecide which T1/E1 facilities will use FAS.
nDecide which of the remaining T1/E1 facilities carries D-channel signaling 
information on the 16th (E1) or 24th (T1) channel. For those channels that 
have a D-Channel Backup, D-channel pairs must be allocated.
nDefine Signaling Groups. A Signaling Group is a group of B-channels for 
which a given D-channel (or D-channel pair) carries the signaling 
information. Each Signaling Group must be designated as either a FAS or 
NFAS Signaling Group.
— A FAS Signaling Group must contain all the ISDN B-Channels on 
the T1/E1 interface associated with the group’s D-channel, and 
cannot contain B-channels from any other DS1 circuit pack. For 
24-channel DS1 boards, some of the DS1 ports may use in-band 
(robbed-bit) signaling and be members in a tie trunk group rather 
than an ISDN trunk group. These tie trunks cannot be members of a 
Signaling Group.
— There is no restriction on which T1/E1 ports can belong to an NFAS 
Signaling Group. Normally, an NFAS Signaling Group consists of 
one or two D-channels and several complete T1/E1 interfaces.
— If a Signaling Group contains only a subset of a T1/E1’s B-channels 
(ports 1–12, for example), it is considered an NFAS Signaling 
Group, not a FAS Signaling Group. The remaining B-channels on 
the T1/E1 are then assigned as members of another NFAS Signaling 
Group.
nAn Interface ID must be assigned to each T1/E1 facility in an NFAS 
Signaling Group. For example, if the B-channels in a Signaling Group span 
3 T1/E1 facilities, a unique Interface ID must be assigned to each of the 3 
facilities. This designation is required to uniquely identify the same 
B-channel (port) number on each of the T1/E1 facilities in the Signaling 
Group. Therefore, this interface must be agreed upon by both sides of the 
interface and administered prior to initialization.
nPrimary and Secondary D-Channel Backup must be agreed upon by both 
sides of the interface and administered prior to initialization. If the IDs do 
not match, the signaling group will come up but calls will fail.
The following screens show the DS1 interface configuration for NFAS. When 
implementing FAS and NFAS, the DS1 screen must be submitted first, followed 
by the Interface Link and associated forms, followed by the ISDN-PRI trunk 
group, Signaling Group, and Trunk Group Members forms. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1335 Facility and Non-Facility Associated Signaling 
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The Interface Link and associated forms may be administered at any time after the 
DS1 screens have been administered, with the following restrictions:
nA D-channel cannot be assigned on a Signaling Group screen unless the 
associated link is disabled.
nA trunk member cannot be assigned unless its associated Signaling Group 
has been administered.
The Signaling Mode field must be specified for each DS1 circuit pack. Because 
this circuit pack has the Signaling Mode field set to isdn-ext, all trunks on this 
circuit pack are signaled using either inband robbed-bit signaling or a D-channel 
on another DS1 circuit pack. 
DS1 Circuit Pack screen
Next, Signaling Groups are administered using Signaling Group screens.
Signaling Group screen (Group 1) — D-channel Backup, Three DS1 Interfaces
 
                    DS1 CIRCUIT PACK
            Location: 1B17                            Name: _______________
            Bit Rate: 2.048                              Line Coding: hdb3
Signaling Mode: isdn-ext
Interface Companding: 5law
           Idle Code: 11111111
        MAINTENANCE PARAMETERS
      Slip Detection? n                      Remote Loop-Around Test? n
 
SIGNALING GROUP
Group Number : 1     Associated Signaling? n         Max number of NCA TSC: 0
                        Primary D-Channel: 1B1524     Max number of CA TSC: 0
                      Secondary D-Channel: 1B1624  Trunk Group for NCA TSC: __
        Trunk Group for Channel Selection: _____
    Trunk Brd    Interface ID        Trunk Brd    Interface ID
  1:   1B15  0 11:   ____           __
  2:   1B16          1  12:   ____           __
  3:   1B17          2  13:   ____           __
  4:   ____          __            14:   ____           __
  5:   ____          __            15:   ____           __ 
						

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Administrator’s Guide  555-233-506  Issue 1
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Features and technical reference 
1336 Facility and Non-Facility Associated Signaling 
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Signaling Group screen (Group 2) — No D-channel Backup, Two DS1 
Interfaces
Signaling Group screen (Group 3) — Facility Associated Signaling
Note the following details in the Signaling Group screens shown above:
nSignaling Group 1 B-channels on DS1 circuit packs (boards) B0 and B1 are 
signaled by D-channel pair B1524 (see the Primary D-channel field) and 
B1624 (see the Secondary D-channel field).
nSignaling Group 2 B-channels on board B1 are signaled by D-channel 
B1824.
nBoard B0 has no D-channel. The B-channels on board B0 can be signaled 
by either D-channel pair B1524/B1624 (Signaling Group 1) or D-channel 
B1824 (Signaling Group 2).
nThe DS1 interface on board B19 (Signaling Group 3) is a Facility 
Associated Signaling case. Note that the Secondary D-channel and Trunk 
Board/Interface ID fields are not displayed when the Associated Signaling 
field is 
y.
 
SIGNALING GROUP
Group Number : 2    Associated Signaling? n         Max number of NCA TSC: 0
                       Primary D-Channel: 1B1824     Max number of CA TSC: 0
                     Secondary D-Channel: ______  Trunk Group for NCA TSC: __
       Trunk Group for Channel Selection: _____
    Trunk Brd    Interface ID        Trunk Brd    Interface ID
  1:   1B17          0  11:   ____           __
  2:   1B18          1  12:   ____           __
  3:   ____          __            13:   ____           __
  4:   ____          __            14:   ____           __
  5:   ____          __            15:   ____           __
 
                           SIGNALING GROUP
Group Number : 3     Associated Signaling? y       Max number of NCA TSC: 0
                        Primary D-Channel: 1B1924   Max number of CA TSC: 0
                                                 Trunk Group for NCA TSC: __
        Trunk Group for Channel Selection: _____