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ISDN Line Simulator User’s Manual

40-400-00012, Rev. E

47

U Interface

A two-wire interface required 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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Содержание ILS-C

Страница 1: ...ISDN Line Simulator ILS C User s Manual 40 400 00012 Rev E ...

Страница 2: ...gistered 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 ...

Страница 3: ...r 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 Phantom Power 15 Caller ID 16 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 Simulator Operatio...

Страница 4: ...ntrol 30 Configuration 32 Reference Documents 33 Revision History 35 Warranty and Service 36 Warranty Information 36 Return Procedures 36 Technical Assistance 36 Maintenance 36 Cleaning 36 Servicing 36 Specifications 37 Glossary 39 ...

Страница 5: ... Rev E v List of Figures Figure 1 Configuration Software 12 Figure 2 U Interface Operation 24 Figure 3 S T Interface Operation 24 Figure 4 Dimensions and Panels 25 Figure 5 Call Control Message Exchange Example 27 ...

Страница 6: ... Opening 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 quali...

Страница 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 ...

Страница 8: ......

Страница 9: ...E2s Using these connections the user is able to place calls either voice or data or both using the National ISDN 1 AT T 5ESS Custom DMS100 or ETSI ISDN is based upon an OSI Open System Interconnection model The ILS 2000 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...

Страница 10: ...4 A 3 5 diskette is provided with the ILS 2000 to change the configuration of the unit To install this windows based software place the diskette in the appropriate drive and from Windows Program Manager select FILE RUN A Setup Step 5 Start the ILS Configuration Program Step 6 Apply power to the Simulator by pressing the power switch located at the rear of the Simulator to the PWR ON position An in...

Страница 11: ...unications devices However some adapters and communications devices connect to the U Interface also called the Line outlet Use 8 Pin Modular RJ 45 telephone cord for all connections IMPORTANT Either or both Simulator ports may be used during simulation but only one interface S T or U may be selected at each port The Simulator auto detects the active interface If both interfaces at one port are con...

Страница 12: ...ifferent number between 1 and 63 for each device you connect to the Simulator If automatic TEI assignment is a selectable option choose it In short follow the instructions for your device using the numbers listed above when applicable Step 13 After any identification numbers are programmed into your device it notifies the Simulator using an initialization procedure If the procedure is successful a...

Страница 13: ...l DN or long distance DN associated with device 2 For example to call from device 1 DN 835 8661 to device 2 dial the local Directory Number 835 8662 or the long distance number 1 800 835 8662 If you dial one of the valid Directory Numbers but no device was assigned to that number you will hear a ringing tone If you dial a number assigned to a device that is unable to accept the call you will hear ...

Страница 14: ...ot connect to another device on the same line Another limitation occurs when attempting to place a call to a device that does not support the requested call type For example a call placed from an ISDN data terminal to an ISDN voice telephone will be rejected by the telephone In some cases the call type and number of channels are satisfied and the called device answers the call but the calling appl...

Страница 15: ...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 travels over two 64Kbs B Channels and one 16Kbs ...

Страница 16: ...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 user data are transported on the D Channel using this protocol LAP D packets are of variable length and are bounded by a flag pattern...

Страница 17: ...d 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 Elements IE There are over 45 Messages and 65 Information Elements currently used by North American ISDN telephone networks Information elements may contain between one and over 100 bytes of constant or variable data For ex...

Страница 18: ...hey 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 be point to point However ISDN also supports point to multipoint configurations with multiple but dissimilar devices connected ...

Страница 19: ...nels 2 B1 Call Types CMV CMD All Bearer Services B2 Call Types CMV CMD All Bearer Services The variable part of the TSP may be changed using the Windows based software supplied with the ILS 2000 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 Phantom Pow...

Страница 20: ...figuration will appear on the screen If an error 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...

Страница 21: ...vices 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 To simulate the AT T 5ESS Custom ETSI or other future protocols...

Страница 22: ...ate with 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 ...

Страница 23: ...se 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 software STEP 2 Sel...

Страница 24: ...includes it in the SETUP message sent to the called party If the called party supports a display the calling party s name and number may be formatted into ASCII text and sent as well When the Simulator s Caller ID setting is set to ON any calling device even when it doesn t include a Calling Party Number Information Element in its outgoing SETUP message is identified by the Simulator and presented...

Страница 25: ...s which follow a Locking Shift 6 Network Codeset Information Element If one or more devices do not support display text but others do enable the Terminal Display Text The device s that cannot support these Information Elements simply ignore them NOTE The Simulator does not send display text if Caller Identification is disabled Electronic Key Telephone Service EKTS EKTS is not new and most people a...

Страница 26: ...te on multi point lines To change this setting STEP 1 Run the Windows based configuration software STEP 2 Select the MULTI POINT setting STEP 3 Change the setting STEP 4 Select SAVE to save the 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 This setting is not available for NI 1 Switch Ty...

Страница 27: ...ote This setting is not available when EKTS is disabled Note A maximum of 4 calls may be on hold with one connected When one or more Call Appearances are enabled the Calling Party Information Element is not included in incoming SETUP messages This means Basic Mode AT T Custom terminals must have Call Appearances set to 00 to operate correctly Key Hold Electronic Key Telephone Service EKTS terminal...

Страница 28: ...rminals that support ACO must be able to perform two functions first they must have the ability to generate tones rather than rely on tones sent on a B Channel from the switch Second they must be able to recognize B Channel selection during the connection phase of a call rather than the setup phase If the terminal supports these features then the switch notifies the terminal of every call even whe...

Страница 29: ...anual 40 400 00012 Rev E 21 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 This setting is not available when EKTS is disabled ...

Страница 30: ...tor 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 Disconnected Mode is supported only when initiated by Terminating Equipment Layer 1 deactivation...

Страница 31: ...ay respond to a Layer 3 failure by refusing to operate These too must be reinitialized or rebooted Note ISDN BRI devices are 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 freq...

Страница 32: ...rface 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 is completed If your ISDN device needs an NT 1 the Simulator allows your device to use the S T Interface as shown in Figure 3 In this case TE 1 and TA devices are connected directly to the Simulator as if connecting to an NT 1 The U SYN...

Страница 33: ...15VAC operation using a 300 mA fuse To enable 230VAC operation replace the 300 mA fuse and spare with a 150 mA fuse 2 provided and move the Voltage Setting switch to 230V A 230VAC power cord IS NOT provided with the unit Supported Call Control Messages The Simulator supports the ISDN BRI Call Control messages listed below For specification documents that describe the function of each message see t...

Страница 34: ...rence REJect message in reply using the appropriate Information Element Cause code to indicate the service is not available ALERTing CALL PROCeeding CONFerence AT T CONFerence REJect AT T CONNect 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 MA...

Страница 35: ...fer TRANSfer REJect Typical Call Control Sequence Figure 5 illustrates a common method for depicting a Call Control Layer 3 message exchange end to end for setting up and releasing a successful call The near end or originating caller is shown on the left while the far end or terminating caller is on the right In this example the Directory Number is dialed using the keypad Figure 5 Call Control Mes...

Страница 36: ...itch sends an idle Call Appearance to terminals that support the CACH option the incoming call is also indicated visually After the switch receives User 2 terminal s ALERTing message it sends a corresponding ALERTing message to User 1 with Signal Ring Tone When User 2 picks up the handset the terminal sends the switch a CONNect message indicating the selected channel The switch returns a CONNect A...

Страница 37: ...en the ILS 2000 and the terminating device is no longer than 1 600 meters Problem TE indicates no S T synchronization Solution Ensure that no more than 300 feet of loop is between the S T interface and the TE Solution Ensure that an NT 1 is not installed between the TE and the ILS 2000 Solution Ensure that any TE loopback tests are completed or disabled Problem How do I loopback the S T interface ...

Страница 38: ... Solution TEI removal is normal whenever an interface first synchronizes Solution Ensure that no more than 2 TEI s are being initialized for either SAPI 0 or SAPI 16 at each port Problem My CPE device requires a TID to operate Solution Program the device s SPID with the first 8 digits of the port s SPID and then use the last 2 digits of the port s SPID for the device s TID Example For a CPE device...

Страница 39: ...ed 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 n...

Страница 40: ... 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 ILS 2000 before attempting the call Problem I have problems using my Motorola BitSurfer when the BitSurfer and ILS 2000 are configured for AT T 5ESS or DMS100 custom Solut...

Страница 41: ...ents Bellcore TR TSY 000847 ISDN Hold Capability for Managing Multiple Independent Calls Bellcore TR TSY 000856 Additional Call Offering for 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 In...

Страница 42: ...ISDN Line Simulator User s Manual 40 400 00012 Rev E 34 Northern Telecom Inc 4001 East Chapel Hill Nelson Hwy P O Box 13010 Research Triangle Park NC 27709 800 684 2273 ...

Страница 43: ...witch types Firmware Version 3 42 NOTE The ILS 2000 incorporated new hardware to support the Phantom Power requirements of the ETSI switch type Because of this an ILS 1000 cannot be upgraded to an ILS 2000 Initial Release ILS C 02 The ILS C 02 replaces the ILS C 01 Firmware Version 3 50 Bug Fix X 25 PVD D Channel changed from 0 to 1 Bug Fix Configuration software incorrectly identified the unit as...

Страница 44: ...ng information Unit model number unit part number and serial number obtained from the Unit ID label 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 unit can be cle...

Страница 45: ... RJ 45 8 pin modular connector Protocol Pseudoternary ASI Alternate Space Inversion 192 kbits sec 100 ppm Maximum cable drop 100 meters using 24 gauge copper wire Power Source 1 40 5 VDC on pins 4 5 negative reference 40 5 VDC on pins 3 6 positive reference Power Source 2 40 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...

Страница 46: ...s Manual 40 400 00012 Rev E 38 Mechanical Specifications Dimensions 2 5 H x 10 0 D x 10 5 W Weight 4 lb 15 oz Regulatory Compliance Safety United States Canada EMC United States UL 1459 CSA C22 2 No 225 M90 FCC Part 15 Class A ...

Страница 47: ...nt 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 switc...

Страница 48: ...on 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 e...

Страница 49: ... 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...

Страница 50: ...fication 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 gener...

Страница 51: ...nd 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 pre...

Страница 52: ...calls 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 o...

Страница 53: ...y 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...

Страница 54: ...t 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 ph...

Страница 55: ...equired 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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