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Lucent Technologies DEFINITY Enterprise Communications Server Release 8.2 Instructions Manual
Lucent Technologies DEFINITY Enterprise Communications Server Release 8.2 Instructions Manual
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DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1.1 June 2000 Screen reference 1007 Trunk Group 17 Bit Rate This field specifies the baud rate to be used by pooled modems. This field appears when the Comm Type field is avd or rbavd. It also appears if the Comm Type field is data, but only if the ISDN-PRI field is y on the System-Parameters Customer-Options screen. Synchronization This field determines whether the trunk group will use synchronous or asynchronous communications. This field appears if: nthe Group Type field is dmi-bos or isdn nthe Group Type field is access, co, fx, tandem, tie, or wats and the Comm Type field is avd or rbavd. nthe Group Type field is access, co, fx, tandem, tie, or wats, the Comm Type field is data, and the ISDN-PRI field or the ISDN-BRI Trunks field is y on the System-Parameters Customer-Options screen. Duplex This field specifies whether a two-way trunk group allows simultaneous transmission in both directions. This field appears when the Comm Type field is avd or rbavd. It also appears if the Comm Type field is data, but only if the ISDN-PRI field is enabled on the System-Parameters Customer-Options screen. NOTE: Even if the trunk group supports full-duplex transmission, other equipment in a circuit may not. Valid entries Usage 300 Enter the speed of the fastest modem that will use this trunk group. 1200 2400 4800 9600 19200 Valid entries Usage async Do not change this field without the assistance of Lucent or your network service provider. sync Valid entries Usage full Enter full in most cases: this allows simultaneous two-way transmission, which is most efficient. halfEnter half to support only one transmission direction at a time.
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1.1 June 2000 Screen reference 1008 Trunk Group 17 Disconnect Supervision-In This field indicates whether the switch receives disconnect supervision for incoming calls over this trunk group. It appears when the Direction field is incoming or two-way. (If the Direction field is outgoing, the switch internally sets this field to n.) The entry in this field is crucial if you allow trunk-to-trunk transfers. (To allow trunk-to-trunk transfers involving trunks in this group, this field must be y and the Trunk-to-Trunk Transfer field on the Feature-Related System Parameters screen must be y). If a user connects 2 trunks through conference or transfer, and neither far-end switch on the resulting connection provides disconnect supervision, the trunks involved will not be released because DEFINITY ECS can’t detect the end of the call. DEFINITY ECS will not allow trunk-to-trunk transfers unless it believes that at least one party on the call can provide disconnect supervision. Therefore, setting this field incorrectly may cause trunks to become unusable until the problem is detected and the trunks are reset. !CAUTION: In general, U.S. central offices provide disconnect supervision for incoming calls but not for outgoing calls. Public networks in most other countries do not provide disconnect supervision for incoming or outgoing calls. Check with your network services provider. Valid entries Usage y Enter y if (a) the far-end switch sends a release signal when the calling party releases an incoming call, and (b) you want to make the far-end switch responsible for releasing the trunk. This entry allows trunk-to-trunk transfers involving trunks in this group. nEnter n if the far-end switch doesn’t provide a release signal, if your hardware can’t recognize a release signal, or if you prefer to use timers for disconnect supervision on incoming calls. Entering n prevents trunk-to-trunk transfers involving trunks in this group.
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1.1 June 2000 Screen reference 1009 Trunk Group 17 Disconnect Supervision-Out This field indicates whether the switch receives disconnect supervision for outgoing calls over this trunk group. It appears when the Direction field is either outgoing or two-way. (If the Direction field is incoming, the switch internally sets this field to n.) The entry in this field is crucial if you allow trunk-to-trunk transfers. (To allow trunk-to-trunk transfers involving trunks in this group, this field must be y and the Trunk-to-Trunk Transfer field on the Feature-Related System Parameters screen must be y). If a user connects 2 trunks through conference or transfer, and neither far-end switch on the resulting connection provides disconnect supervision, the trunks involved will not be released because DEFINITY ECS can’t detect the end of the call. DEFINITY ECS will not allow trunk-to-trunk transfers unless it believes that at least one party on the call can provide disconnect supervision. Therefore, setting this field incorrectly may cause trunks to become unusable until the problem is detected and the trunks are reset. Also, remember that DEFINITY ECS must receive answer supervision on outgoing analog CO, FX, WATS, Tie, Tandem, and Access trunks before it will recognize a disconnect signal. If this trunk group does not receive answer supervision from the far-end switch, and you enter y in this field, DEFINITY ECS will internally set the field to n. !CAUTION: Do not set this field to y unless you are certain that the far-end switch will provide answer supervision and disconnect supervision. Most public networks do not provide disconnect supervision over analog trunks. Check with your network services provider. Valid entries Usage y Enter y if (a) the far-end switch sends a release signal when the called party releases a call an outgoing call, and (b) you want to make the far-end switch responsible for releasing the trunk. This entry allows trunk-to-trunk transfers involving trunks in this group. The Answer Supervision Timeout field must be 0 and the Receive Answer Supervision field must be y for the switch to recognize a y entry. n Enter n if the far-end switch doesn’t provide a release signal, if your hardware can’t recognize a release signal, or if you prefer to use timers for disconnect supervision on outgoing calls. Entering n prevents trunk-to-trunk transfers involving trunks in this group.
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1.1 June 2000 Screen reference 1010 Trunk Group 17 Cyclical Hunt When a call is offered to a trunk group, the switch searches for an available trunk. This field, which appears when the Direction field is two-way and the Trunk Type field is loop-start, controls the starting point of the search. You can change this field from n to y at any time. To change from y to n, however, all the trunks in the group must be idle or busied out. Disconnect Type This field indicates which side or user controls the disconnect, where A refers to the calling party and B refers to the called party. Appears only if the Country field is 15 and the Trunk Type field is 2-wire-ac, 2-wire-dc, or 3-wire. This applies only to the TN2199 port. Send Answer Supervision This field appears when the Trunk Signaling Type field is cont or dis and only applies to TN2140 ports. Valid entries Usage y Enter y to have the switch start its search from the last trunk seized. This method is faster, and thus better suited for high-traffic trunk groups. nEnter n to have the switch start each search at member 1 (the first trunk administered on the Group Member Assignments page). Valid entries Usage A and B A or B Valid entries Usage y/n Enter y to make your switch signal the calling switch when an incoming call is answered. You can only set this field to y if the Direction field is incoming or two-way.
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1.1 June 2000 Screen reference 1011 Trunk Group 17 Answer Supervision Timeout If the Receive Answer Supervision field is n, use this field to set the answer supervision timer for outgoing and two-way trunks. During a cut-through operation, timing begins after each outgoing digit is sent by the switch and timing ceases after the far-end sends answer supervision. If the timer expires, the switch acts as if it had received answer supervision. On senderized operation, the timer begins after the last digit collected is sent by the switch. NOTE: This field’s setting does not override answer supervision sent from the network or from DS1 port circuit timers. To control answer supervision sent by DS1 firmware, set the Outgoing End of Dial (sec) field on the Administrable Timers page of the trunk group screen. Receive Answer Supervision Use this field to specify whether the network provides answer supervision for a trunk group. For Outbound Call Management applications, set this field to y for trunks supporting network answer supervision. For trunks that do not receive a real answer, this field determines when the CallVisor Adjunct-Switch Application Interface (ASAI) connect event is sent. NOTE: When you set this field to y, the Outgoing End of Dial (sec) field is not displayed. The firmware timeout on circuit packs controlled by the Outgoing End of Dial (sec) field is automatically set to 0. Valid entries Usage 0 to 250Enter the number of seconds you want the switch to wait before it acts as though answer supervision has been received from the far-end. Set this field to 0 if Receive Answer Supervision is y. Valid entries Usage y Enter y if the network provides answer supervision. Set the Answer Supervision Timeout field to 0. n Enter n if the network does not provide answer supervision, and set the Answer Supervision Timeout field. Also enter n for incoming trunk groups.
DEFINITY ECS Release 8.2
Administrator’s Guide 555-233-506 Issue 1.1
June 2000
Screen reference
1012 Trunk Group
17
Field descriptions for page 2
The figure below shows a common configuration for page 2 of the Trunk Group
screen when the Group Type field is
co. This screen is only an example, and the
fields shown below may change or disappear according to specific field settings.
Screen 211. CO Trunk Group
!CAUTION:
Customers: Do not change fields on this page without assistance from
Lucent Technologies or your network service provider.
ACA Assignment
Valid entries Usage
y/n
Enter y if you want Automatic Circuit Assurance (ACA)
measurements to be taken for this trunk group. If
y is entered,
complete the Long Holding Time, Short Holding Time, and
Short Holding Threshold fields.
add trunk-group next Page 2 of x
TRUNK FEATURES
ACA Assignment? _ Measured: ____
Maintenance Tests? _
Data Restriction? _
Abandoned Call Search? _
Suppress # Outpulsing? _
Charge Conversion: _____
Decimal Point: ______
Currency Symbol: ___
Charge Type: _______ Receive Analog Incoming Call ID: ________
Per Call CPN Blocking Code: ___
Per Call CPN Unblocking Code: ___
MF Tariff Free? _
Outgoing ANI: _______________
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1.1 June 2000 Screen reference 1013 Trunk Group 17 Measured Indicates if the system will transmit data for this trunk group to the Call Management System (CMS). You cannot use internal and both unless either the BCMS (Basic) or the VuStats field is y on the System-Parameters Customer-Options screen. If the ATM field is set to y on the System-Parameters Customer-Option screen, this field accepts only internal or none. If this field contains a value other than internal or none when ATM is y, none appears. Long Holding Time (hours) This field appears only when the ACA Assignment field is y. Internal Alert Maintenance Tests Valid entries Usage internal Enter internal if the data can be sent to the Basic Call Management System (BCMS), the VuStats data display, or both. externalEnter external to send the data to the CMS. bothEnter both to collect data internally and to send it to the CMS. none Enter none if trunk group measurement reports are not required. Valid entries Usage 0 to 10Enter the length of time (in hours) that the system will consider as being a long holding time. If you enter 0, the system will not consider long holding calls. Valid entries Usage y/n Enter y if internal ringing and coverage will be used for incoming calls. Valid entries Usage y/n Enter y if hourly maintenance tests will be made on this trunk group. Your entry is not saved when the screen is submitted unless one or more trunk members are administered.
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1.1 June 2000 Screen reference 1014 Trunk Group 17 Short Holding Time (seconds) This field appears when the ACA Assignment field is y. Data Restriction Short Holding Threshold This field appears when the ACA Assignment field is y. Glare Handling This field determines what the switch will do when glare occurs. This field appears when the Direction field is two-way and the outgoing side of the Trunk Type field is either …/wink or …/delay. If you enter control or backoff, and ports for the trunk group are not capable of detecting glare, warnings are generated. The following circuit packs can detect glare: TN767 (all releases), TN760C (or later releases), and TN464C (or later releases). Valid entries Usage 0 to 160Enter the length of time (in seconds) that the system considers as being a short holding time. If 0 is entered, the system will not consider short holding calls. Valid entries Usage y/n Enter y to prevent features from generating tones on a data call that would cause erroneous data transmission. Valid entries Usage 0 to 30Enter the number of times the system will record a short holding call before alerting an attendant to the possibility of a faulty trunk. Valid entries Usage control Your switch will seize the trunk and proceed with call setup. The other switch will find another trunk. backoffThe other switch will seize the trunk proceed with call setup. Your switch will find another trunk. none
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1.1 June 2000 Screen reference 1015 Trunk Group 17 Abandoned Call Search Use this field when the Trunk Type field is ground-start. Abandoned Call Search is designed to work with analog ground-start CO trunks that do not provide disconnect supervision. Your central office must support Abandoned Call Search for the feature to work properly. If your central office provides disconnect supervision, you do not need to use the Abandoned Call Search feature. Used for DCS NOTE: This field cannot be activated if the trunk group number is greater than 255 or if the Trunk Access code is more than 3-digits long. If this field is y, you can administer ISDN-BRI trunk groups unless the DCS Signaling field is d-chan. In that case, remove the BRI trunks or set the DCS Signaling field to bx.25 before submitting the screen. PBX ID This field, which appears when the Used for DCS field is y, identifies the remote switch in the network with which the trunk will communicate on a DCS signaling link. Suppress # Outpulsing Valid entries Usage y/n Enter y if this trunk group will conduct an Abandoned Call Search to identify ghost calls. Valid entries Usage y/n Enter y if this trunk group will send and receive messages on a DCS signaling link. Valid entries Usage 1 to 63Enter the ID of the switch at the other end of this trunk. Valid entries Usage y/n Enter y if end-to-end signaling begins with (and includes) “#”. The final “#” is suppressed in cases where the system would normally outpulse it. This field should be y when the Central Office (for example, rotary) or any other facility treats “#” as an error.
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1.1 June 2000 Screen reference 1016 Trunk Group 17 Seize When Maintenance Busy This field only affects ports on TN760C (or later release), TN767, and TN464C (or later release) circuit packs. It indicates whether this switch generates an outgoing seizure when a trunk in this trunk group is maintenance busied and whether the far-end switch is administered to do likewise. This supports the Electronic Tandem Network Busyout feature, which is intended to prevent a far-end switch from reporting problems with a trunk that has been removed from service on your switch. This field’s setting does not affect the behavior of the far-end switch; it controls the behavior of this switch and defines the expected far-end behavior. For DIOD trunks using TN464F (or later release) or TN2464, displays only when the Group Type field is diod and the Trunk Signaling Type field is pulsed, cont, or dis. If a switch generates an outgoing seizure when a trunk is busied out, the seizure will probably cause alarms at the far-end switch, perhaps leading to a far-end maintenance busy out, unless the far-end switch is administered to expect this behavior. If the administered value of this field is either far-end or both-ends, any abnormally long incoming seizure (including failure to drop from a completed call) is assumed to be the result of a far-end maintenance busy condition. Note that this assumption may be incorrect, since the abnormally long seizure may actually be due to failure of the trunk circuit. Regardless of the cause of the abnormally long seizure, your switch does the following things: 1. Generates a warning alarm indicating that the trunk is assumed to be maintenance busy at the far-end 2. Removes the trunk from service 3. Keeps the trunk out of service until a far-end disconnect is received Allowable values depend on the entry in the Direction field: check the online help in the switch administration software. Valid entries Usage near-end Enter near-end if this switch generates an outgoing seizure when a trunk is maintenance busied but the far-end switch does not. The seizure is maintained until the maintenance busyout is released. far-endEnter far-end if the far-end switch generates an outgoing seizure when a trunk is maintenance busied but this switch does not. both-endsEnter both-ends if both this switch and the far-end switch generate an outgoing seizure when a trunk is maintenance busied.