Mitel SX 200 ML PABX Instructions Guide
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Circuit Card Descriptions purchased options for the PABX. If the System ID module is missing or the Mite1 options password is incorrect, the PABX does not operate. SYSTEM ID MODULE Jl CONNECTOR PI J2 CONNECTOR TO SFT TO BCC AND PORTS CC0567 Figure 5-l Main Control Card II Bay Control Card Brief Description 5.3 The Bay Control Card (BCC), part number 9109-017-000, is required in the lower rightmost slot. CAUTION: This card must not be inserted or removed with the power on. Functions The Bay Control Card provides: l Control of operations within the cabinet l Monitoring of lines, trunks and other circuits within the bay; reports are sent to the Main Control Card II via HDLC message links . Ringing signal conversion. (The wave form comes from the Main Control Card II as a PCM signal.) l Connector for the Main Control Card Il. Indicators The Bay Control Card has Alarm LED, TX (transmit), and Rx (receive) indicators for the HDLC message link. March 1997 Issue 1 Revision 0 5-3
Engineering InformaKon Electrical Description Connection to the Main Control Card II is via one 96 DIN connector on the Bay Control Card. There are two pairs of switches on the card; see Figure 5-2. All four switches must be set to closed for normal operation. r Ll~~m - &Ii.L.-- n- -- - CPU I L-III Figure 5-2 Bay Control Card 5-4 Issue 1 Revision 0 March 1997
Circuit Card Descriptions @ MllW MODULE ’ e MODULE $ * 0: 1 2 MODULE MODULE g INDICATORS 3 e= MODULE 4 0 id v ALARM - ALARM LED Jl UNIVERSAL @ MllEL- LINE I 0 LINE2 08 LINE3 0: LINE4 @g F LINE 5 0 LINE LINE6 0 INDICATORS LINE7 & LINE8 @ LINE9 @ LINE IO@ LINE II@ LINE 120 r q v ALARM- AL4RM WI LED l @ Mm TRUNK@ 1 2 TRUNK@z 2 u TRUNK 0 3 m TRUNK@$ 4 TRUNK 0 5 TRUNK @ 6 ONS LSIGS CARD LINE CARD OPS LINE INDICATORS - ALARM - LED @ MI-EL- TRUNK 0 g 1 z TRUNK @g 2 F TRUNK @g 3 z TRUNK& 4 TRUNK 0 5 TRUNK 0 6 LINE CARD TRUNK CARD TRUNK INDICATORS - ALARM - LED TRUNK CARD > LINE4 @ COV LINE CARD LINE2 0 LINE3 0 LINE4 @ LfNE 5 Oi LINE6 @g LINE7 @g LINE8 @F !JJ LINE9 0s LINF IO@ LINE II@ LINE 120 * AIARM Hv ALARM- M LED DIGITAL DIGITAL Tl Tl TRUNK INDICATORS LINE CARD TRUNK CARD CC0083 March 1997 Figure 5-3 Typical Digital Circuit Card Face Plates Issue 1 Revision 0 5-5
Engineering Information Universal Card . . Brief Description 5.4 The Universal Card, part number 9109-005-000, interfaces up to four modules to the backplane. The card modules are illustrated in Figure 5-4. Facilities Facilities provided by the Universal Card include: . module mounting positions (four) l module activity LEDs (four) l software-controlled failure alarm LED. Physical Description A module measures 145 mm x 83 mm (5.7 in. x 3.25 in.). Each module has two vertical 32-pin female DIN connectors which mate to male connectors on the Universal Card. Mechanical connection to the Universal Card is assisted by a standoff. Up to four modules may be mounted on a Universal Card, subject to electrical power limitations. See the Electrical Description paragraph. Electrical Description The combination of modules on a Universal Card is limited by the power available from the card. Each module has a power rating number. The total of these numbers must not exceed IO. The Universal Card can be mounted only in a high-power (upper) card slot of a digital bay. The Module power ratings are as follows: Module Type Power Rating Empty module position 0 Music-on-Hold/Paging DTMF Receiver/Relav 1 2 I E&M Trunk I 3 I Each of the four module positions is assigned Universal Card tip and ring connections as shown below. Module Position I Tl/Rl Module Tip/Ring T2/R2 T3/R3 2 T4/R4 T5/R5 T6/R6 3 T7/R7 T8/R8 T9/R9 4 TlO/RlO Til/Rll Tl2/Rl2 5-6 Issue 1 Revision 0 March 1997
Circuit Card Descriptions - SWITCH MUSIC ON HOLD/PAGER MODULE RECEIVER/RELAY E&M TRUNK MODULE UNIVERSAL CARD LED’s 1 2 I MODULE 1 e MODULE 2 J I MODULE 3 v MODULE 4 -ALARM Figure 5-4 Universal Card and Modules DTMF Receiver/Flelay Module Brief Description The DTMF Receiver/Relay Module facilitates the reception and decoding of DTMF dialing. Main Components Major components of the DTMF Receiver/Relay Module are: l Mite1 filterkodec (four) l Mite1 8870 DTMF receiver (four) l Parallel bus interface l Two general purpose relays. Facilities Facilities provided by the DTMF Receiver/Relay Module include: l Early line split March 1997 Issue 1 Revision 0 5-7
EnQineerinQ InfcmnUtiOn 5-8 l Guard time circuit 9 Presentation of digits on parallel bus with Data Valid signal. Circuit Description There are four receivers on the DTMF module. Each receiver takes its input from the incoming serial PCM audio stream and repeats this data to the outgoing serial PCM stream approximately 125 msec later. A filter/codec converts the data to analog audio which is monitored by a DTMF Receiver chip. When DTMF tones are detected, the loopback of the data to the PCM output stream is disabled (Early Line Split). The DTMF Receiver/Relay Module has a power rating of 2. Two relays are on the module; each is software controlled to provide a contact closure across one tip-ring pair. Relays There are two general purpose relays. When each relay closes, it connects a tip and ring pair together. The relay contacts are rated as follows: maximum switching voltage: 90 V maximum carrying current: 0.5 A Note: This relay contact may be connected only to a secondary circuit that has no direct connection to a primary circuit, and receives its power from a transformer, converter, or equivalent isolation device situated within the equipment. E&M Trunk Module Brief Description The E&M Trunk Module (part number 9109-013-000) plugs into the Universal Card. It provides interface to Type I or Type 5 E&M trunks. The module has a power rating of 3. Facilities Facilities provided by the E&M Trunk Module include: l Type I and Type 5 signaling l selectable gain/loss plan for normal or satellite working trunks l selectable 600 ohm or AT&T Complex Balance Network (350 ohms + 1000 ohms in parallel with 0.21 mF) . selectable 2- or 4-wire transmission l on board filter/codec for analog/digital and digital/analog conversions (Flaw). Operation The E&M Trunk Module is set for the type of trunk in use by a set of eight DIL switches. The settings are as follows: Issue 1 Revision 0 March 1997
Circuit Card Descriptions Function Switches 12345678 PABX to Line Gain 3 dB 0 x x x x x x x -13 dB lxxxxxxx Line to PABX Gain- 4 dB xoxxxxxx -1-I dB X lxxxxxx Balance 600 ohm x x 10xXxX Complex x x Olxxxx Transmission 2-wire x x x x I x x x 4-wire x x x x 0 x x x Signaling Vw 1 x x x x x 1 x x Vw 5 x x x x x 0 x x 0= open, I= closed, x= not applicable Default setting for North America is 001 Oil 00 The E&M Trunk Module applies signals to the M lead and monitors the E lead. In the on-hook condition, the Type I interface grounds the M lead; an open presented to the E lead indicates idle, a grounded E lead indicates an incoming call. In the off-hook condition, the Type I interface applies -48 volts to the M lead; a ground sent to the E lead indicates an incoming seizure. Music-on-t4oWPaging Module Brief Description The Music-on-Hold/Paging Module (part number 9109-018-000) provides an input for music-on-hold, a paging output, and a relay to switch an external paging amplifier. The module plugs into the Universal Card. The Music-on-Hold/Paging Module has a power rating of 1. . Major Componek Major components of the Music-on-Hold/Paging Module include: l audio filter/amplitude limiter l Mite1 8961 filter/codec l paging driver amplifier l paging control relay. Electrical Description The music input is isolated by a transformer and has an impedance of 600 ohms. The signal should be between 50 and 500 mVrms. High frequencies are attenuated and amplitude limiting is applied as required by FCC rules part 68. Amplitude limiting is applied when the signal exceeds approximately 390 mVrms. The paging output is isolated by a transformer and has an impedance of less than 200 ohms. The output level into a 600 ohm load is typically -6 dBm (388 mVrms). March 1997 Issue 1 Revision 0 5-9
Engineering Information The control relay contacts are rated as follows: maximum switching voltage 90 Vrms maximum carrying current 0.4 Arms Note: This relay contact may be connected only to a secondary circuit that has no direct connection to a primary circuit, and receives its power from a transformer, converter, or equivalent isolation device situated within the equipment. DID Trunk Card Brief Description 5.5 The DID Trunk Card (pat? number 9109-031-000) contains six l-way direct inward dial circuits which provide for direct access to PABX subscriber lines from the public telephone network. DID Trunk Cards can be used in any digital high-power (upper) slot. The maximum number of these cards is four per system, providing a maximum of 24 ports, The card measures 157.5 mm x 366.4 mm (6.2 in. x 14.4 in.). Major Components Major components in the DID Trunk Card are: l Mite1 8962 FilterCodec (one per trunk circuit) l Feed Reversal relay (one per trunk circuit) l Alarm LED. Facilities The facilities provided by each trunk circuit are: l Trunk activity LED l Line protection l 2-wire / 4-wire conversion (external to internal) l Analog-to-Digital / Digital-to-Analog conversion (p-law) l Immediate, Delay Dial or Wink Start supervision l Direct Inward Dialing access to PABX subscriber lines l Conformity with the EIA loss level plan for F-law compatible PABXs in North America. Operation A trunk is idle if the resistance across Tip and Ring is 4000 ohms or more. In idle condition the PABX provides forward battery feed to the line. The Tip is grounded and the Ring is at -48 Volts. The CO initiates a call to the PABX by terminating Tip and Ring. The supervision circuitry detects the flow of loop current and alerts the system software. The PABX signals that it is ready to receive dialing by briefly applying a battery reversal to the 5-10 Issue 1 Revision 0 March 1997
Circuit Card Descriptions line. Ring is grounded and Tip is at -48 Volts. There are two types of controlled address signaling: Delay Dial and Wink Start. A Delay Dial signal must start no later than 150 ms after trunk seizure. It is held until the PABX is ready to receive dialing. Minimum hold time is 140 ms. A Wink Start signal must start at least 100 ms after trunk seizure. It is sent when the PABX is ready to receive dialing and can be held a maximum of 290 ms. Where the CO does not provide controlled address signaling, the PABX must be pre- pared to receive dialing 65 ms after trunk seizure. When the called station or PABX attendant answers, the PABX places battery reversal on the line for the duration of the call. The trunk then returns to the idle state. A trunk may be busied out by the system software, which then presents an open circuit to the Tip and Ring of both the trunk and trunk card circuit. The trunks default to the busy-out state if system power fails. Each circuit has a LED on the front panel which lights to indicate the trunk is in use. A seventh LED at the bottom of the panel lights to indicate a failure on the card. Electrical Description Line protection comprises high voltage varistors to energy dump ground from Tip and Ring and fusible links incorporated in the battery feed resistors. EMI is controlled by inductors in series with Tip and Ring. The maximum loop resistance is 1800 ohms. The maximum loop length is 5850 m (I 9,200 ft) when using 26 AWG wire, 15,240 m (50,000 ft) when using 22 AWG wire. The card circuitry performs 2-wire to 4-wire conversion, splitting the signal on the trunr into outgoing and incoming speech paths. The analog signal coming from the trunk is converted to Pulse Code Modulation (PCM); the signal to be sent to the trunk is con- verted from PCM to analog audio. These conversions are performed by a Mite1 Codec chip. Battery feed reversal and busy-out for each trunk are controlled by relays, as shown below. Condition Relay 1 Forward Feed (Idle) ON Reverse Feed (Talk) ON Relay 2 OFF ON LWGS Trunk Card Brief Description 5.6 The Loop Start/Ground Start Trunk Card, part number 9109-01 l-001, interfaces six trunk circuits to the system. The card is 158 mm high x 368 mm long (6.2 in. x 14.5 in.). Figure 5-5 illustrates the card and the LS/GS jumper. March 1997 Issue 1 Revision 0 5-l 1
Engineering Information Facilities 5-12 Facilities provided by the L!YGS Trunk Card include: l Loop Start or Ground Start selectable by jumper l M and MM signaling leads available l Trunk activity indicated by LED (one per trunk) l Transient suppression on Tip, Ring, and signaling leads l Alarm LED. Electrical Description The Loop Start/Ground Start Trunk Card mounts in any slot and interfaces six trunk circuits to the system. Each trunk circuit is programmed as loop start or ground start by a jumper clip prior to installation. Each trunk has Tip and Ring leads and M and MM leads for additional signaling, if required. All leads are protected by varistors against transients between line and ground. There are also varistors between Tip and Ring and between M and MM. Each lead is in series with an inductor near the edge connector to reduce electromagnetic interference (EMI). Each trunk has an LED on the front faceplate of the card that lights to indicate that the circuit is busy. An LED at the bottom of the faceplate lights to indicate a failure on the card. Operation - Loop Start To place an outgoing call, the trunk card places a termination across tip and ring. The CO detects the current flow and responds with dial tone. Now the user may begin to dial. The Trunk Card recognizes-an incoming call when it receives ringing voltage or battery reversal from the CO. The Trunk Card will respond by placing a termination across Tip and Ring. The trunk is released when the loop current is broken, either when the near party goes on-hook or the line is physically broken. Operation - Ground Start To place an outgoing call, the Trunk Card grounds the Ring lead. The CO responds by grounding the Tip lead. The Trunk then places a termination across Tip and Ring and ungrounds the Ring lead. The CO then sends dial tone to indicate that it is ready to receive dialing. The Trunk Card recognizes an incoming call when the CO grounds the Tip lead. The CO may also send ringing voltage. The Trunk Card will respond by placing a termination across Tip and Ring. The trunk is released when the loop current is broken, either when one party goes on-hook or the line is physically broken, Issue 1 Revision 0 March 1997