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Lucent Technologies DEFINITY Enterprise Communication Server Release 8.2 Administrators Guide
Lucent Technologies DEFINITY Enterprise Communication Server Release 8.2 Administrators Guide
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DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Features and technical reference 1317 Distinctive Ringing 20 Distinctive Ringing Distinctive Ringing provides several ringing cycles to help telephone users and attendants distinguish between incoming call types. Administer Distinctive Audible Alerting on Feature-Related System Parameters for internal, external, priority, and attendant originated calls. If the phone is a single-line analog, you have to set this on the Station screen for each user. Detailed description You can administer system-wide distinctive-ringing cycles for the three basic call types. Most installations use 1-burst for internal calls, 2-burst for external calls, and 3-burst for priority calls. There are also non-administrable ringing signals for Automatic and Dial Intercom calls, Manual Signaling, and Redirect Notification. Normally if an internal phone user transfers an external call, the call rings as internal. You can set a feature parameter (Update Transferred Ringing Pattern) to make the call ring as an external call. Considerations nIf Distinctive Ringing is disabled, the system generates a 1-burst repetitive tone for all incoming calls. This is useful for equipment interfaced by analog lines, especially if you use off-premises station. nA single distinctive ring cycle is used for each new incoming call to an off-hook telephone or headset. The system alerts a CALLMASTER terminal with a single ring cycle whenever either the headset or the handset is plugged into the headset jack. Interactions nPersonalized Ringing The called party hears the user-selected ringing pattern for the distinctive ring cycles. DS1 Trunk Service Digital Signal Level 1 (DS1) trunk service uses bit-oriented signaling (BOS) and multiplexes 24 channels (T1 service) or 32 channels (E1 service) into a single data stream. DS1 can be used for voice or voice-grade data and for data-transmission
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Features and technical reference 1318 DS1 Trunk Service 20 protocols. T1 trunk service multiplexes 24 channels into a single 1.544-Mbps data stream. E1 trunk service multiplexes 32 channels into a single 2.048-Mbps stream. Both T1 and E1 provide a digital interface for trunk groups. For information about how to administer DS1 with enhanced administration, refer to ‘‘ Signaling modes’’ on page 1320. Brief description DS1 trunk service provides a digital interface for the following trunks. nVoice-grade DS1 tie trunks nAlternate voice/data (AVD) DS1 tie trunks nRobbed-bit AVD (RBAVD) DS1 tie trunks nDigital Multiplexed Interface (DMI) tie trunks nISDN-PRI trunks nCentral Office (CO) trunks nForeign Exchange (FX) trunks nRemote-access trunks nWide Area Telecommunications Service (WATS) trunks nDirect Inward Dialing (DID) trunks nMain/Satellite tie trunks nTie trunks that link Common-Control Switching Arrangement (CCSA) or Enhanced Private Switched Communications Service (EPSCS) networks nRelease-link trunks for Centralized Attendant Service (CAS) nAccess trunks nOff-premises stations (also known as station-side DS1) nAccess endpoints DS1 also provides the following functions in public and private networks: nElectronic tandem networks (ETN) or tandem tie-trunk networks (TTTN) nDirect access to local exchange carriers
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Features and technical reference 1319 DS1 Trunk Service 20 DS1 operational and signaling parameters The table below provides the recommended combination of parameters for each DS1 interface. DS1 Circuit Packs # Trunk MembersBit Rate Mbps CompandingSignaling Mode Trunk Type 1 TN722 1-23 1.544 mulaw common-chan Tie, DMI-BOS, CO 2 1-24 robbed-bit Tie TN722B 1-23 1.544 mulaw common-chan Tie, DMI-BOS, CO 2 1-24 robbed-bit CO/DID/Tie TN767D, E 31-23 1.544 mulaw common-chan Tie, DMI-BOS, C0 2 1-24 robbed-bit CO/DID/Tie 1-23 (24th is D-chan)isdn-pri 4ISDN 1-24 isdn-ext 4ISDN TN464B 51-30 2.048 alaw/mulaw6CAS CO/DID/Tie 1-31 alaw isdn-pri 4ISDN 1-31 isdn-ext 4ISDN 1-23 1.544 mulaw common-chan Tie, DMI-BOS, CO 2 Continued on next page
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Features and technical reference 1320 DS1 Trunk Service 20 Signaling modes Common-channel signaling (CCS) is an industry-standard technique where any one of a group of channels carries the signals for the other channels. Lucent Technologies uses the 24th channel of a group for signaling. This signaling technique differs from 24-channel signaling. When the system is configured for Facility-Associated Signaling, 24-channel signaling uses the 24th channel in a DS1 facility to carry signals. This technique also is called clear channel, out-of-band, or alternate voice data (AVD) signaling. TN464C, D, E, F 3, and TN24641-24 1-23 (24th is D-chan) 1-31 (16th is D-chan) 1-24 1-31 1-301.544 4 2.048 1.544 4 2.048 2.048alaw/mulaw alaw/mulaw alaw/mulawrobbed-bit isdn-pri 4 isdn-ext4 CASCO/DID/Tie ISDN ISDN ISDN CO/DID/Tie TN2242 1-30 1-30 7 2.048 2.048alaw/mulaw alaw/mulawCAS isdn-priTie ISDN 1. CO is any of the following trunk types: CO, FX, WATS. Tie is any of the following trunk types: access, tie, tandem, RLT, APLT. 2. Common-channel DS1 circuit packs used in CO trunk groups must have a trunk type of auto. 3. Integrated CSU functionality is available only with the TN767D and TN464E or later-suffix DS1 circuit packs. Enhanced ICSU functionality is available only with TN767E, TN464F, and later-suffix DS1 circuit packs. 4. Mixed-mode signaling is allowed. This means that if the signaling mode is isdn-ext or isdn-pri, a port from that circuit pack may be used in any trunk group that allows robbed-bit signaling. 5.The TN464B’s companding is based upon the system companding that you administer. 6. ISDN-PRI calls are not guaranteed to work for the TN464B if the system’s companding is set to mu-law. 7. The administered D-channel on the DS1 screen for ISDN-PRI cannot be a trunk group member.DS1 Circuit Packs # Trunk MembersBit Rate Mbps CompandingSignaling Mode Trunk Type 1 Continued on next page
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Features and technical reference 1321 DS1 Trunk Service 20 Channel Associated Signaling (CAS) is similar to common-channel signaling and is used only when the Bit Rate is 2.048 Mbps (the trunk is used with an E1 interface). Signaling is carried on the 16th channel. Common-channel signaling and channel associated signaling provide a maximum transmission rate of 64 Kbps for bearer channels. Robbed-bit signaling is a per-channel signaling technique for transmitting signaling bits on each channel in a DS1 facility. The least-significant bit in every 6th transmitted information frame is removed and replaced by a signaling bit. This technique is also called in-band signaling. The maximum transmission rate for each bearer channel with robbed-bit signaling is 56 Kbps. ISDN-PRI signaling is carried on the 24th channel for a 1.544 Mbps connection and on the 16th channel for a 2.048 Mbps connection. Public network signaling administration for ISDN-PRI Layer 3 The table below shows DEFINITY ECS public network access connections for ISDN-PRI Layer 3. Admin value Country Protocol supportedB-channel mtce msg 1 - a United States, CanadaAT&T TR 41449/ 41459 (tested with AT&T network, Canadian network, and MCI network)Service 1 - b United States Bellcore TR 1268; NIUF.302; ANSI T1.607Restart 1 - c United States NORTEL DMS-250 BCS36/IEC01 Service 2a Australia AUSTEL TS014.1; Telecom Australia TPH 1856 National ISDN protocolRestart 2b Australia ETSI ISDN protocol Restart 3 Japan NTT INS-NET Restart 4 Italy ETS 300 102 Restart 5 Netherlands ETS 300 102 Restart 6 Singapore ETS 300 102 Restart 7 Mexico ETS 300 102 Restart Continued on next page
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Features and technical reference 1322 DS1 Trunk Service 20 8 Belgium ETS 300 102 Restart 9 Saudi Arabia ETS 300 102 Restart 10 - a United KingdomETS 300 102 (for connection to DASS II/DPNSS through external converter)Restart 10 - b United Kingdom, IrelandETS 300 102 (Mercury); British Telecom ISDN 30; Telecom Eireann SWD 109none 11 Spain Telefonica ISDN Specification Restart 12 - a France VN4 (French National PRI) None 12 - b France ETS 300 102 modified according to P10-20, called EuronumerisNone 13 - a Germany FTZ 1 TR 6 (German National PRI) None 13 - b Germany ETS 300 102 Restart 14 Czech Republic, SlovakiaETS 300 102 Restart 15 Russia (CIS) ETS 300 102 Restart 16 Argentina ETS 300 102 Restart 17 Greece ETS 300 102 Restart 18 China ETS 300 102 Restart 19 Hong Kong ETS 300 102 Restart 20 Thailand ETS 300 102 Restart 21 Macedonia ETS 300 102 Restart 22 Poland ETS 300 102 Restart 23 Brazil ETS 300 102 Restart 24 Nordic ETS 300 102 Restart 25 South Africa ETS 300 102 Restart ETSI - a Europe, New Zealand, etc.ETS 300 102 Restart ETSI - b ETS 300 102 None Admin value Country Protocol supportedB-channel mtce msg Continued on next page
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Features and technical reference 1323 Emergency Access to the Attendant 20 Emergency Access to the Attendant Emergency Access to the Attendant alerts an attendant if a telephone remains off-hook for more than the administered period of time. It also enables a user to place an emergency call to an attendant. Detailed description Emergency calls can be placed automatically by the system or dialed by system users. Such calls can receive priority handling by the attendant. Place emergency calls to the attendant in the following ways: nAutomatically by the system Assign a telephone the Off-Hook Alert option via class of service (COS). If the terminal is left off-hook until intercept timeout, the (administrable) off-hook alerting timer starts. If the terminal is still off-hook when the timer expires, an emergency call is automatically placed to the attendant. nDial access by a system user A user can place an emergency call to the attendant by dialing the Emergency Access to the Attendant feature-access code. When an emergency call is placed, one of the available attendants receives visual and audible notification of the call. If all attendants are busy, the call enters a queue for emergency calls. Calls can be administered to redirect to another extension if the queue is full. An emergency call causes the following to occur: 1. The system selects the first available attendant to receive the call. 2. The attendant hears the emergency tone and sees the lamp associated with the Emergency button, if assigned, light. If the console does not have emergency-tone capability, the attendant hears normal ringing and sees the display flash. 3. The attendant display shows: — Calling-party identification — Calling-party extension — How many emergency calls remain in queue An audit record is created for each emergency call. This record includes: nExtension where the call originated nThe attendant or attendant group that answered the call
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Features and technical reference 1324 Emergency Access to the Attendant 20 nTime of the call nThe following known call results: — Call Completed — Call answered at attendant or listed directory number (LDN) night extension. — Queue Full — Emergency-access queue is full; tries to redirect the call to an emergency-access redirection extension. — No Attd — No active attendants are available to receive the call; tries to redirect the call to an emergency-access redirection extension. — Redirected Answered — Call is answered by the emergency-access redirection extension. — No Redirection Ext. — Could not redirect the call to the emergency-access redirection extension because none are administered. — Attd Night Service — System is in night service. Will try to redirect the call to attendant night service. — Failed — Caller drops the call before it can be answered. Call was either waiting in the attendant emergency queue, ringing at an attendant console, or ringing at the LDN night extension. — Redirected Abandoned — Caller drops the call before it can be answered. Call had been redirected to the emergency-access redirection extension. You can generate an Emergency Access Summary Report of the emergency audit records. Schedule the report for printing once a day at a designated printer. If the switch has a journal printer Emergency Access to the Attendant audit records print as the calls occur. You can monitor emergency-access calls by displaying them at the administration terminal. The command for listing emergency call events is list emergency. You can use a from and to time option with the command. For example, if you enter the command list emergency 8:00am 12:00pm, the report shows emergency call events that occurred during that interval. Considerations nThe emergency tone cannot be silenced except by answering the emergency call. nThe system should have at least one day and one night attendant (or night service station) for this feature to be useful at all times.
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Features and technical reference 1325 Emergency Access to the Attendant 20 Interactions nCentralized Attendant Service For a branch with CAS in effect, an emergency call reroutes to the branch attendant group. If the branch does not have an attendant or if the branch is not in CAS Backup Service, the call is denied. If the branch PBX is in CAS Backup Service, an emergency call routes to the backup position and is handled as any other non-emergency call. nCOR An emergency call to the Attendant overrides all restrictions on the COR. nIndividual Attendant Access An emergency call cannot be placed to an individual attendant. Emergency calls have priority over other calls to an individual attendant, only if they are assigned a higher priority on the Console Parameters form. nInter-PBX Attendant Service For branches with Inter-PBX Attendant Service in effect, an emergency call reroutes to the local attendant group. If the branch does not have an attendant or if the attendant is not on duty, the call is denied. nNight Service When Night Service is in effect, emergency calls route to the night destination. Such calls are included on the Emergency Audit Record, and the call is designated as Emergency Night in the audit trail. When an attendant is in night service, you must assign either a night station or a redirect extension. Otherwise emergency calls to the night attendant hear a busy tone. nOff-Hook Alerting automatically places an emergency call to the attendant. nPriority Queue You can change the priority of emergency calls to equal or lower than that of other types of calls. nRemote Access An emergency call cannot be placed through Remote Access. nRestriction — Controlled An emergency call overrides any controlled restriction.
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Features and technical reference 1326 Emergency Transfer 20 Related screens nClass of Service (Off-Hook Alert) nConsole Parameters — Queue Priorities nFeature-Related System Parameters — Reserved Slots for Attendant Priority Queue — Time before Off-Hook Alert — Emergency Access Redirection Extension nHospitality — Extension of Journal/Schedule Printer — Time of Scheduled Emergency Access Summary Report nAttendant Console - Feature Button Assignments — em-acc-att nFeature Access Code (FAC) — Emergency Access To Attendant Access Code Emergency Transfer Emergency Transfer provides service to and from the local telephone company central office (CO) during a power failure or when service is impaired. Emergency Transfer is also called Power Failure Transfer; the terms are synonymous. Detailed description Emergency Transfer allows analog telephones (500- or 2500-type) to access the local CO and to answer incoming calls during a power failure. Each DEFINITY ECS cabinet supports Emergency Transfer panels via the AUX connectors on the rear panel. The transfer is initiated when: na transfer panel or associated cabinet loses power. nsomeone manually activates the Emergency Transfer switch on the associated maintenance circuit pack nthe software determines that service for that cabinet is severely impaired You cannot activate any other system features during a complete system power failure.