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ISDN Demonstrator User’s Manual

40-400-00011, Rev. B

CONFerence

(AT&T)*

CONFerence REJect (AT&T)

CONNect

ACKnowledge

DISConnect

DROP

(AT&T)

DROP

ACKnowledge

(AT&T)

DROP REJect (AT&T)

HOLD

(NI-1/NTI)

HOLD

(AT&T)

HOLD

ACKnowledge

(NI-1/NTI)

HOLD

ACKnowledge

(AT&T)

HOLD REJect (NI-1/NTI)

HOLD REJect (AT&T)

INFOrmation

MANagement INFOrmation (AT&T)

NETwork

ESCape

NOTIFY

(NI-1/NTI)

PROGress

RECONNect

(AT&T)

RECONNect ACKnowledge (AT&T)

RECONNect REJect (AT&T)

(NI-1/NTI)*

RELease

COMPlete

RESTart

ACKnowledge

RETrieve

(NTI)

RETrieve ACKnowledge (NI-1/NTI)

RETrieve REJect (NI-1/NTI)

Summary of Contents for ILS-B

Page 1: ...ISDN Demonstrator ILS B User s Manual 40 400 00011 Rev B ...

Page 2: ...red trademark of Teltone Corporation Windows is a registered trademark of Microsoft Corporation Other company and product names may be trademarks or registered trademarks of their respective owners Teltone Corporation Bothell Washington 98021 USA Customer Service 425 951 3388 Technical Support 425 951 3390 Fax 425 487 2288 Email info teltone com Website www teltone com ...

Page 3: ... Chapter 3 Provisioning and Operation 11 Configuration Software Installation 11 General Operation 13 Defaults 13 Switch Type 13 D Channel X 25 14 Packet Handling Function PHF 14 B Channel Provisioning 15 Caller ID 15 Terminal Display Text 16 Electronic Key Telephone Service EKTS 17 Multi Point 18 Call Appearances 18 Key Hold 19 Additional Call Offering ACO 20 Chapter 4 Demonstrator Operation 21 Re...

Page 4: ...400 00011 Rev B iv Reference Documents 30 Warranty and Service 32 Warranty Information 32 Return Procedures 32 Technical Assistance 32 Maintenance 32 Cleaning 32 Servicing 32 Specifications 33 Glossary 34 ...

Page 5: ...40 400 00011 Rev B v List of Figures Figure 1 Configuration Software 12 Figure 2 U Interface Operation 23 Figure 3 Dimensions and Panels 24 Figure 4 Call Control Message Exchange Example 26 ...

Page 6: ...ening or removing covers may expose you to dangerous voltages or other risks Incorrect reassembly can cause electric shock when the appliance is subsequently used 5 If the product does not operate normally by following the operating instructions or if the product has been dropped or the cabinet has been damaged or if the product exhibits a distinct change in performance refer servicing to qualifie...

Page 7: ...on against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user ...

Page 8: ......

Page 9: ...1 signaling standard AT T 5ESS Custom provisioning is available as a separate option ILSATT 01 ISDN is based upon an OSI Open System Interconnection model The ISDN Demonstrator supports layer 1 physical operation layer 2 data link operation and Layer 3 network operation Layers 4 7 are considered application layers that use the first 3 layers as a base The ISDN Demonstrator has been developed to ma...

Page 10: ...ed and Green during this self test The STATUS LED changes to a continuous solid green if the self test is completed satisfactorily Step 4 The Simulator is configured at the factory for National ISDN 1 protocol The Simulator is provisioned for default service as normally practiced for the selected switch type Most communications devices operate correctly with this provisioning However if your commu...

Page 11: ...etween your device and the ISDN Demonstrator Step 9 If you have an NT 1 and want to install it between your device and the Simulator connect the NT 1 Line outlet to the Simulator s U Interface at either port Allow several seconds 5 30 for the port s U SYNC light to turn green then connect your communications device to a Phone outlet on the NT 1 Most NT 1 s provide two Phone outlets providing a con...

Page 12: ...ramming the U SYNC LED may not turn on until you place your first call Step 12 Repeat the above steps for additional devices The Simulator provides power for up to four communications devices and two NT 1 s Each communications device must be programmed with a different SPID and or DN Step 13 If you later need to rearrange the connections between the Simulator and your devices disconnect the device...

Page 13: ...When the call is answered a connection is established between the devices You may then talk transfer files share computer applications video conference exchange e mail or perform any other service or feature your ISDN BRI devices or computer applications support If your device supports putting a call on hold or placing multiple calls you can make additional calls to other devices You can also make...

Page 14: ...mpatible with the called application For example not all video conferencing applications use the same data encoding Or a Terminal Adaptor that converts ISDN to RS 232 may answer a data call that is carrying FAX information A well designed application determines that it cannot process the data and releases the call Otherwise the user must hang up What To Read Next For a technical review of ISDN BRI...

Page 15: ...ISDN Call Control The ISDN Demonstrator is configured to support the first three layers of the OSI model ISDN services are referred to as Call Types Common call types are Circuit Mode Voice CMV Circuit Mode Data CMD and Packet Mode Data PMD Circuit mode call types support high speed data and digitized voice while packet mode calls may be used for computer networking All ISDN BRI user traffic trave...

Page 16: ... Network LAN protocol to an ISDN BRI S T Interface Devices that connect to a TA are called Type 2 Terminating Equipment TE 2 Layer 2 Data Link Operation Layer 2 of the OSI model establishes a method of transporting binary information via data links The ISDN data link layer is a variant of X 25 packet exchange called LAP D All signaling and switching information Layer 3 and optionally X 25 LAP B us...

Page 17: ...yer 3 Network Operation Once packet exchange is established the Network Layers of the switch and Terminating Equipment can begin the Call Control dialog that replaces conventional telephony signaling The dialog is based on a set of commands that operate on one or more parameters similar to a computer Operating System language Commands are called Messages and parameters are called Information Eleme...

Page 18: ...SPID Assignment Normally each telephone line is assigned a single Directory Number When a customer orders services or features they are programmed into a Service Profile stored at the switch Any call associated with that line can be assumed to apply only to that customer s Directory Number and Service Profile When a single ISDN device is connected and serviced this way the configuration is said to...

Page 19: ...V CMD All Bearer Services The variable part of the TSP may be changed using the Windows based software supplied with the ISDN Demonstrator Not all variable settings are applicable for all Switch Types The settings are D Channel X 25 PHF None Permanent PVC Dial up SVC B Channel NONE Permanent B1 Permanent B2 Permanent Both Loopback Caller IDentification ON OFF Terminal Display Text ON OFF Multi Poi...

Page 20: ...or message appears follow the instructions as required i e If the communications port is other than the default of COM1 select another port as necessary When a valid query has been completed the Configuration Name will appear as QUERY with Switch and Line Provisioning settings shown No attempt to compare against a stored value is done Two message boxes at the bottom of the screen will aid the user...

Page 21: ...TYPE STEP 3 Select DEFAULTS STEP 4 Remove all communications devices from the Simulator and press the DOWNLOAD button An automatic RESTART is issued as part of the DOWNLOAD Important When the Simulator configuration is changed using the Windows based configuration software always reinitialize any connected devices Switch Type The Simulator is configured at the factory for National ISDN 1 protocol ...

Page 22: ...th Call Control signaling packets and other X 25 traffic on a multi point line For this reason the telephone company does not assure X 25 LAP B data throughput exceeding 9600 baud There are three methods for establishing a D Channel X 25 Packet Mode Data PMD call The first but least used is to negotiate the call using ISDN BRI Call Control signaling The other two methods employ X 25 Virtual Circui...

Page 23: ... Channels These devices assume that one or more B Channels are permanently connected or nailed up to a fixed destination When using real ISDN BRI lines one or more permanently provisioned B Channels are assigned by the telephone company To establish one or more permanent channels between the Simulator s Port 1 and Port 2 or a LOOPBACK configuration STEP 1 Run the Windows based configuration softwa...

Page 24: ...setting STEP 5 Remove all communications devices from the Simulator and press the DOWNLOAD button An automatic RESTART is issued as part of the DOWNLOAD Note When CALLER ID is set to OFF the Calling Party Number is not included in incoming SETUP messages Terminal Display Text Many ISDN BRI telephones terminal adapters and computer applications support a display feature that accepts and shows forma...

Page 25: ...ical line The main protocol difference between standard ISDN devices or Basic Mode Terminals and EKTS Mode Terminals is that the former are addressed using the Called Party Number Information Element while the latter support the Endpoint ID Information Element The Called Party Number is simply the Directory Number associated with the physical telephone line when service was established When an inc...

Page 26: ...t screen outgoing SETUP messages for the Calling Party Number information element and incoming SETUP messages are sent point to point not broadcast Important Do not connect more than one device to each Simulator port when MULTI POINT is set to NO Call Appearances Another feature of many business telephones specifically EKTS Mode Terminals is the ability to manage multiple calls at one terminal The...

Page 27: ...alls Some of these operations are performed by the Simulator When a call is placed on hold the B Channel allocated to that call is released but not the call s status variables or other switch resources This means the B Channel may be used for another purpose and the original call can be quickly reconnected after the B Channel is released from its temporary task Call hold does not apply to the D Ch...

Page 28: ... If the terminal supports these features then the switch notifies the terminal of every call even when both B Channels are busy a condition referred to as interface busy The terminal may then start its own alerting tone and if it supports CACH operation indicate the call visually If the user or a prioritizing system chooses to release a B Channel either by hanging up or putting a call on hold the ...

Page 29: ...sh Multiple Frame operation before they can transfer Layer 3 Call Control packets to the Simulator The first Call Control Message sequence performed is usually the SPID initialization procedure for acquiring an Endpoint ID The Simulator performs ISDN BRI Call Control using all essential Messages and Information Elements defined for National ISDN 1and the AT T 5E option series switch NOTE Layer 2 D...

Page 30: ...re not normally designed to be stopped and started at Layer 2 or 3 Consequently not all terminals will operate in a predictable manner after simulation is resumed When in doubt press RESTART then reinitialize the devices Various test conditions and configurations can cause frequent line errors and low level protocol violations When using a real ISDN BRI line the Central Office accumulates these er...

Page 31: ...configured for U Interface operation Connecting to the U Interface allows synchronization of any communications devices connected downstream Figure 2 U Interface Operation The Simulator s U interface status is signaled by the U SYNC LED which changes from a blinking green LED to a solid green LED after synchronization has competed ...

Page 32: ...he function of each message see the end of this section Message codings unique to a particular switch vendor or protocol are followed by the applicable switch type identifier Not all recognized messages are performed by the Simulator and are indicated with For example while the Simulator will recognize the AT T CONFerence message it will return a CONFerence REJect message in reply using the approp...

Page 33: ...NI 1 NTI HOLD AT T HOLD ACKnowledge NI 1 NTI HOLD ACKnowledge AT T HOLD REJect NI 1 NTI HOLD REJect AT T INFOrmation MANagement INFOrmation AT T NETwork ESCape NOTIFY NI 1 NTI PROGress RECONNect AT T RECONNect ACKnowledge AT T RECONNect REJect AT T REGISTER NI 1 NTI RELease RELease COMPlete RESTart RESTart ACKnowledge RETrieve NTI RETrieve ACKnowledge NI 1 NTI RETrieve REJect NI 1 NTI ...

Page 34: ... Message Exchange Example When User 1 picks up the handset the terminal sends a SETUP message to the switch indicating the Off Hook condition Switchhook type of call Bearer Capability the desired channel Channel ID the selected Call Appearance and the Calling Party Number The Called Party Number is not included so the switch returns a SETUP ACKnowledge message indicating the assigned channel and i...

Page 35: ...tes the B Channel circuit end to end User Application specific traffic may now be exchanged over the B Channel When User 2 replaces the handset the terminal sends a DISConnect message The switch removes the B Channel circuit and returns a RELease message It sends a corresponding DISConnect message to User 1 who returns a RELease message The switch sends RELease COMPlete to User 2 while User 1 send...

Page 36: ... If the TE permits use of dynamic TEIs this option is strongly recommended Solution Ensure that no more than 2 TEI s are being initialized for either SAPI 0 or SAPI 16 at each port Problem The TE indicates that TEIs are periodically removed Solution Ensure that duplicate fixed TEIs are not assigned to any device connected to the ISDN Demonstrator Solution TEI removal is normal whenever an interfac...

Page 37: ...d to the same DN when a different DN is dialed Solution When using more than one number per line make certain that Multi Point AT T only is set to Yes Solution If the TE accepts 2 SPIDs do not program the same SPID into the TE more than once Solution If a DN is programmed into the TE be sure to use the format required by the TE manufacturer e g 7 digits vs 10 digits Problem Every call indicates no...

Page 38: ...each port must be programmed in the TE Problem Cannot place X 25 call by dialing a number Solution Select SVC for D Channel X 25 setting Connect one TE to port 1 and the other to port 2 Ensure that both TEs send X 25 Reset packets to the ISDN Demonstrator before attempting the call Problem Electronic key telephone drops calls when another incoming call is selected Solution Ensure that EKTS is enab...

Page 39: ...Managing Multiple Independent Calls Bellcore TR TSY 000857 Flexible Calling for Managing Multiple Independent Calls Bellcore TR TSY 000858 ISDN Electronic Key Telephone Service Bellcore TR TSY 000205 AT T Integrated Services Digital Network ISDN Basic Rate Interface Specification AT T 801 802 100 ISDN Basic Rate User Network Interface Specification Northern Telecom NIS S208 6 Issue 1 1 Understandi...

Page 40: ... Unit model number unit part number and serial number obtained from the Unit ID label on the bottom of the unit Teltone RMA number All available fault information Complete shipping and billing address Repair purchase order Technical Assistance For technical assistance on this product call Teltone technical support at 425 951 3390 or send an email to support teltone com Maintenance Cleaning The uni...

Page 41: ...0 5 VDC on pins 7 8 Pin 7 negative reference Pin 8 positive reference Maximum power source voltage per ANSI T1 605 is 56 5 VDC Minimum power source voltage per ANSI T1 605 is 32 0 VDC Maximum of 6 Watts available power for external devices RS 232 interface DB 25 pin female connector DCE 19 2 KBAUD rate Environmental Specifications Temperature Storage 40 to 55C Operating 0 to 50 C Humidity Max 85 F...

Page 42: ...t through a system and where the signal strength weakens repeaters are installed to amplify the signal However since in an analog transmission there is no way to differentiate between the signal and noise repeaters amplify both and noise becomes cumulative in an analog transmission system ANI Automatic Number Identification The billing number of the calling party Provided by the originating switch...

Page 43: ...n or transmission medium can carry Analog transmission is measured in Hertz or cycles per second Digital transmission is measured in bits per second Baud A unit of signaling speed equal to the number of signal events per second In binary systems one baud equals one bit per second In sophisticated systems one signal event may transmit more than one bit Baud or Baud Rate A unit of modulation rate eq...

Page 44: ... established from point A to point B through a network for the duration of a telephone call This connection supports end to end voice CPE Customer Premises Equipment In the U S end user equipment that may not be owned by the local exchange Carrier equipment that resides on the end user s side of the network interface boundary established by Computer Inquiry II D Channel An ISDN Statistically multi...

Page 45: ...cification for the Primary Rate Interface See PRI T 1 and E 1 I 440 The ITU T specification commonly know as Q 920 which describes the general network aspects of the LAP D protocol also known as DSS1 I 441 Q 921 ISDN user network interface D Channel Layer 2 specification describing the operational procedures of LAPD Part of DSS1 I 450 Also known as Q 930 the ITU T specifications describing the gen...

Page 46: ...d some control over the influence of errors within the physical layer Layer 3 The Network layer in the OSI Reference model Includes routing and switching functions Layer 4 The Transport layer in the OSI Reference model Uses Layers 1 to 3 to provide an end to end service with the required characteristics for the higher layer functions Layer 5 The Session layer in the OSI Reference model Allows pres...

Page 47: ...alls N ISDN Narrowband ISDN Narrowband Integrated Services Digital Network Includes basic interface 2B D or BRI and primary rate interface 23B D or PRI Copper based at speeds at or below 1 5 Mb s NT1 Network Termination 1 In the U S a customer owned device that converts from external telephone company transmission format U interface to internal building transmission format T interface Concerned on...

Page 48: ...services These include custom calling features RBOC Regional Bell Operating Company Seven operating or holding companies into which the Bell System s local telephone companies were assigned as a result of the Modified Final Judgement MFJ in 1982 These companies were assigned the management of local exchange companies originally owned by AT T Distributed regionally they included Pacific Telesis U S...

Page 49: ... and NT1 For the Basic Interface this is a 4 wire connection limited to 1 KM TA ISDN Terminal Adapter ISDN Customer owned protocol converter Converts from a standard non ISDN interface e g X 25 RS 232 to ISDN S T interface TE Terminal Equipment ISDN equipment category including TE1s TAs and TE2s TE1 Terminal Equipment type 1 Terminal Equipment meeting ISDN interface specifications such as ISDN pho...

Page 50: ...quired by the FCC not the ITU T between the Local Exchange Carrier and the customer s NT1 Specification completed during 1Q87 by ANSI T1D1 3 X 25 ITU T recommendation specifying how user equipment DTE is to connect to a public packet switched network DCE Specifies Layer 1 2 and 3 Protocols ...

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