YAESU LL-2 LANDLINER

AUTOMATIC RAD1CTELEPHONE INTERFACE

The LandLine r is a complete , un ive r sa l t w o - w a y r a d i o - t o - t e l e p h o n e in t e r f aceu n i t designed to provide au tomat i c , t r a n s p a r e n t l i n k a g e be tween your two-wayradio network and the Public Switched Telephone Network (PSTN). When instal-led in a base s ta t ion and connected in l ine w i t h a t e lephone , the LL-2 al lowsa remote s t a t ion to access the telephone system for placing and receivingcalis. A base s ta t ion operator is not requí red if the remote s ta t ion isequipped with a simple DTMF keypad.

Additional LandLiner Features* Opérales simplex, semi-duplex or f u l l dúplex ( w i t h f u l l dúplex radios)* Transmit switching controlled by sampling for simplex and semi-duplex* Completely controllable from the remote station* Automatic DTMF/pulse conversión for use with both dialling systems* Allows base operator moni tor ing and par t ic ipat ion, if desired* A Remote station without DTMF can place calis through base operator* Automatically turns off base transmitter if remote drops out* Time-out timer prevents overlong transmissions* Automatic Last Number Redial for remote if telephone line busy* Simple connection, operation and serviceabi l i ty for technical personnel:

all internal wiring uses push-on connectors for quick on-site service* Adjustable for wide variety of telephone systems: f ac to ry -cus tomized for

your system

This manual is divided into three sections, covering general i n f o r m a t i o n ,operation, and ins ta l l a t ion and ad jus tment . The Operat ion section should beread ca re fu l ly and understood by anyone who wi l l have the respons ib i l i ty ofoperat ing or overseeing operation of the LandLiner ( the remote operator needonly be informed of the procedures indicated in the "Remote Station Operation"subsection). The Ins ta l l a t ion and A d j u s t m e n t section is provided for thei n s t a l l i n g technic ian: if your LandLiner is not yet instal led, or if you needto relocate it , contact your Yaesu dealer for assistance.

SPECIFICATIONS

Power requirements Cali Receiving Function11.7 to 16 VDC: Ring Signa!: 25 VACSOOmA @ 13.8V with 1.5W Audio output Line Current (Line On): 60 ±10 mA250mA @ 13.8V with Monitor Off Busy Tone: above -40dBm simplex,

above -30dBm dúplexOperating temperature range

-10° to +50°C ( + 14° to +120°F) Cali Placing FunctionDTMF Input (at AF I N ) : 0.3 ±0.2V

Storage temperature range-40° to +70°C (-40 to +158°F)

Dimensions (WHD)160 x 65 x 233(mm)

Weight1.6 kg

- 1 -

(3) LINE ON/OFFLamp and Switch

F-owen LUJE

8ON/OFF

VOLUM6 MONITOR

UNE/RADIO

LINE ONLY

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YAESTJ

UNIVERSAL PATCH l_L~2.

(1) VOLUME (OFF) Control, (2) MONITORand POWER Lamp LINE/RAD1O

LINE ONLY Selector

OPERATION

The LandLiner must be installed with thebase s t a t i o n t r ansce ive r (or repeater)before operation. Because it must becustom-instal led and adjusted specificallyfor your radio and telephone network re-quirements , the LandLiner should only beins t a l l ed by a q u a l i f i e d t echn ic i an .Contact your Yaesu dealer if you needtechnical assistance.

Throughout this manual , the word "local"refers to the LandLiner-equipped base sta-tion, composed of at least the LandLiner,a two-way radio transceiver and a tele-phone connected to the PSTN or a prívatetelephone network. An operator may or maynot be present at the base station, and aspecial instruction subsection is providedfor such a local operator, if present.

Similarly, the word "remote" in this man-ual refers to any two-way radio stationequipped wi th a transceiver at a remotesite operating on the same channel as thebase transceiver at the local site. Suchremote stations may be mobile, portable orfixed bases, and can even be other Land-Liner equipped bases. The LandLiner isdesigned for use with one, or at most onlya few remote stations, since all caliswill be overheard by any remotes.

Remote stations equipped with DTMF tonegenerator keypads can place and receívecalis through the LandLiner unassisted.Remote stations without DTMF require theintervention of a local operator. A spe-cial i n s t ruc t i on subsect ion (Pa r t I I )covering remote station operation of theLandLiner is also provided in the follow-ing pages. Those instructions may be readovér the air by the local operator to anynew remote stations.

I. Instructions for Local Operator

Before operating the LandLiner, refer tothe fo l lowing descriptions and photographbelow to f ami l i a r i ze yourself with thefunctions of the controls and indicatorson the f ron t panel.

(1) VOLUME (OFF) Control, and POWER Lamp

Use this control to turn the LandLiner onand off ( f u l l y counterclockwise), and toadjust the volume in the loudspeaker whenthe LandLiner is set to monitor Communica-tions. When on, the POWER Lamp is lit.

- 2 -

( 2 ) MONITORL I N E / R A D 1 OLINE ONLY Selector

This three-posit ion rotary switch selectsthe operating mode of the LandLiner:

In the MONITOR mode all radio and tele-phone Communications can be monitored viathe interna! loudspeaker by the LandLinerlocal operator. All radio transmissionson the channel wi l l be heard, whether ornot a telephone cali is in progress. Thelocal microphone (connected to the Land-Liner) is disabled. Remote stations (wi thDTMF) can place and receive calis unassis-ted in this mode.

In the LINE/RADIO mode the loudspeaker inthe LandLiner is disconnected, so Communi-cations cannot be monitored by the localoperator, except via the local telephoneconnected to the LandLiner . The localmicrophone is also disabled in this mode,and remotes can place and receive calisunassisted in this mode.

In the LINE ONLY mode the radio and tele-phone are a lways disconnected f r o m oneanother. The in ternal loudspeaker andlocal microphone are connected to the basestation radio, and the local telephone isconnected to the PSTN, so the operator canplace calis or relay for parties call ingon on either the radio or telephone line,without direct connection between the twoparties. Remotes cannot place or receivecalis unassisted in this mode.

(3) LINE ON/OFF Lamp and Switch

The orange L I N E l amp indicates when theautomat ic connection system between theLandLine r and remote s ta t ions is active.When the lamp is on the LandLiner is per-iodical ly pol l ing the radio channel, al-ternate ly sending and receiving so as todetect the presence of a remote station.

This pol l ing is suspended whenever a re-mote s tat ion t ransmits . Also, in theMONITOR and LINE/RADIO modes, the LINElamp will bl ink while a remote station isdia l l ing , and stay l i t for the du ra t ion ofa cali.

During a conversation (whi le the LINE lampis on) pressing the L I N E ON/OFF switchdown for about 0.5 seconds cuts the connec-t ion to the remote s t a t ion , e f f e c t i v e l yt e r m i n a t i n g the cali .

Also, when the local operator is requiredto manually place calis for remotes unableto dia l themselves, a f t e r contact ing bothparties, the LINE ON/OFF switch is used inconjuc t ion wi th the mode selector to con-nect the two parties.

Local Operating Procedures

As the local operator, you can place andreceive calis by radio, using the localmicrophone (connected to the LandLiner )and internal loudspeaker; or by telephonevia the local telephone connected to theLandLiner . You can also par t ic ípate as athird party in conversations between aremote and telephone station via the localtelephone.

A. Preliminary Control Settings

When the LandLiner station is turned on orwhen you f i r s t come on duty, perform thefol lowing steps to ensure that the con-trols on the base transceiver and Land-Liner are set proper ly .

(1) Set the mode selector on the Land-Liner to MONITOR.

(2) Set the SQUELCH control on the basestat ion transceiver (connected to theLandLiner) fu l l y counterclockwise.

(3) Set the VOLUME control of the basetransceiver to about the 9 o'clockposition, and then adjust the VOLUMEcontrol on the LandLiner for com-fortable volume in the loudspeaker ofthe LandLiner.

(4) Rotate the SQUELCH control on thet r a n s c e i v e r c l o c k w i s e j u s t to thepoint where the noise is silenced(when the channel is c lear) .

(5) You can leave the rhode switch set toMONITOR, to be able to hear anycalis; or set it to LINE/RADIO if theremotes nave DTMF keypads (so theycan place calis unassisted) and youdo not wish to monitor the calis.

During normal operation when the remotesare equipped wi th DTMF keypads, there. isno need for a local operator to intervene:calis from remotes wi l l be switched auto-matically, and each remote can place andreceive calis using his keypad. When aremote is connected to the telephone linethe L I N E l a m p w i l l be l i t , and b l i n kduring diall ing. If necessary, you cancut off a conversation at any time bypressing the LINE ON/OFF switch until theLINE lamp goes off.

However, when no local operator is pre-sent, remote stations without DTMF keypadscannot place or receive calis.

(1) Receiving Calis for Remotes

(a) If someone calis in on the telephonefor a remote station, that stationwil l be unable to respond if he isnot equipped w i t h a DTMF keypad.Therefore you should know who doesnot have such a keypad. Pick up thehandset of the local telephone andask the caller to hold while you pagethe remote.

(b) Set the LandLiner to the LINE ONLYmode, and use the local microphone topage the remote. When he responds,in fo rm him of the cali.

(c) Switch the LandLiner back to MONITORmode, press the LINE ON/OFF switch sothat the LINE lamp lights, and tellthe caller (via the local telephonehandset) to go ahead.

B. Calling from the Local Base

If you need to talk with a remote stationset the mode selector on the LandLiner toLINE ONLY, enabling the local microphoneand preventing interrupt ions by incomingtelephone calis. Use the local microphone(connected to the LandLiner) to cali andtalk to remote stations via the radio.Press the PTT (Push-To-Talk) button on themicrophone to speak, and reléase it tolisten (unless using a fu l l dúplex radiosystem).

Also, in this ( L I N E ONLY) mode, you canuse the local telephone connected to theLandLiner to place or receive telephonecalis independently of the remote sta-tions, which have no access to the tele-phone network in this mode.

C. Assisting Remote Callers

As mentioned previously, remote stationsnot equipped with a DTMF tone keypad can-not place or rece ive te lephone cal isthrough the LandLiner without your assis-tance. The fol lowing steps describe theprocedures. Note that normally the Land-Liner is kept in the MONITOR mode when alocal operator is s tanding by. This per-mits those who can to place and receivecalis unassisted, whi le those who cannotcan still be heard by the local operatorwhen they need assistance.

(2) Remotes Placing Calis

(a) If the remote station does not have aDTMF keypad he will cali you, reques-t i ng (by voice) t h a t a cali beplaced. You must have the Landlinerset to MONITOR or LINE ONLY mode soyou can hear their cali.

(b) If the Landliner is set to MONITOR,switch to LINE ONLY, and use thelocal microphone to respond, askingthe remote caller to standby whileyou dial the requested number on thetelephone and bring the desired partyon the line.

(c) Place the telephone cali, and ask thecalled par ty to wait a moment whileyou switch to the remote caller.

(d) Switch the mode selector on the Land-Liner to the MONITOR position, andpress the LINE ON/OFF switch so that

the lamp lights. Then instruct (viathe local telephone handset) the par-ties to go ahead.

(e) The local microphone is disabled inthe MONITOR mode, but you can parti-cípate in the conversation via thelocal telephone. If you hang up, theconversation wil l still be audible inthe loudspeaker.

- 4 -

Note: I f the r ad io network is not f u l ldúplex ( a l l o w i n g each par ty to hear theother while t a l k i n g ) , i t may be necessaryto request each party to wai t for about asecond each time the other finishes speak-ing, to allow the circui t ry to change overto the other party. If both ta lk at thesame time the remote station will not hearthe party on the telephone.

II. Remote Station Operation

The S Q U E L C H c o n t r o l on the r emotetransceiver should be set n o r m a l l y , asdescribed in the transceiver manual .

In simplex and semi-duplex radio networks,when the LandLiner is active, a pulsingcarrier wil l be heard al ternately openingand closing the squelch. This is the pol-ling funct ion of the LandLiner , sampl ingthe channel to detect any transmitted res-ponse from a remote station.

Remote stations equipped with DTMF keypads(usua l ly a part of the microphone) candial and answer calis themselves as des-cribed below. Those wi thou t DTMF mustcali the local base station operator ifthey wish to place a cali.

While the PTT (Push-To-Talk) button on themicrophone is held to keep the transmitteron, the DTMF keypad functions in the gen-erally the same manner as the keypad on apushbutton telephone. The [*] key servesa funct ion s imi l a r to picking up the hand-set of a telephone, and the [#} key hangsit up.

If a r inging tone is heard in the recei-ver, press and hold the PTT switch on themicrophone while also pressing the [*] keyon the keypad to answer the cali. Reléasethe PTT switch to hear the ca l l ing party.

When you wish to speak, press the PTTswitch and wait for about a half secondbefore you start speaking (otherwise, yourf i r s t few syllables w i l l not be heard) .The wait is not required in f u l l dúplexradio systems.

Automatic Diai l ing with DTMF

Before p l ac ing a c a l i , make certain tha tthe channel is not already in use ( theBUSY ind ica tor on your transceiver shouldbe o f f ) . Hold the PTT switch and press[*] on the keypad, fol lowed by the d ig i t sof the number you are calling. Then re-léase the PTT switch and listen for ther ing ing tone. If you don't hear i t a f te ra few seconds, cióse the PTT and press [#](to hang u p ) . To redial the same numberfrom the Last Number Redial Memory, justpress [*] twice in succession.

Note: If you wai t too long af ter sendingthe in i t i a l [*] tone, the base stationwill time out. You -will loóse the connec-tion and have to st art again. Also, ifyou are d r iv ing in a " f r inge" área, f l u t -ter on your signal may in terfere withdia l l ing . If you suspect this, stop thevehicle to dial.

When the par ty ansv^ers the phone, pressthe PTT and remember to wait for a ha l fsecond before you s ta r t speaking. If theother par ty indicates they are missingsome of your words, you may have forgottento wait a f t e r pressing the PTT beforespeaking. Also, if they speak while youare t r a n s m i t t i n g you wil l not hear them,so you might have to ask them to waitun t i l you f in i sh speaking before they an-swer ques t ions (as the mobi le , you are incomplete control: they cannot interruptyou) .

When finished, you can hang up by pressing[# ] while ho ld ing the PTT switch. Also,if you hear the squelch of your radio pul-sing without conversat ion, press [#] toshut off the base t r ansmi t t e r .

Automatic Last Number Redial

If you hear a busy tone a f t e r d i a l l i ng ,you can redial the same number automatic-ally. First hold the PTT and press [#] to

hang up. Wait u n t i l the channel is clear,and then hold the PTT and press [*] twicein succession.

5 -

Operator-Assisted Calling (without DTMF)

Mobiles without DTMF keypads cannot answeror dial calis automatically. However, anystat ion can place a cali wi th assistanceof the base stat ion operator, if one ispresent. Simply cali the operator byradio as you would normal ly cali any sta-tion, and give the number you wish tocali. The operator wi l l then ask you towait, and then if the cali goes through,wi l l tell you to go anead.

While wai t ing, and when listening to theother party, you should hear your trans-ceiver's squelch pulse periodically as thebase station samples for your transmis-sions. Remember to press the PTT and waitfor half a second each t ime before youspeak, or your f i rs t few syllables willnot be heard.

- 6

(7) MIC Jack (6) TELEPHONE (5) - LINEJack and Termináis

(4 ) - 13.8V HTermináis

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F GND AFÍN SQ PTT MIC SGND AFour

(1) - I3.8V + Jack (2) F GND and (3) SQ, PTT, MIC,AF IN Termináis S GND and AF OUT

Terminá i s

INSTALLATION AND ADJUSTMENT

The LL-2 should be instal led only by aq u a l i f i e d t echn ic i an f a m i l i a r w i t h t h eradio and telephone systems with which theequipment is to be interfaced. Ownersshould contact their Yaesu dealer for as-sistance when ins ta l l ing or relocating theLL-2, or if problems are encountered dur-ing operation.(1) & (4) - 13.8V + Jack and TermináisConnect an external DC power source eitherto the termináis (4) or the coaxial jack( 1 ) . These a re connec ted in p a r a l l e lin ternal ly . Operating voltage must bebetween 11.7 and 16 VDC, at 500 mA peak( f u t í speaker v o l u m e ) , 250 mA continuous.Normally, the LL-2 can share the samepower supply as the base transceiver ifboth require the same DC voltage. Other-wise, the Yaesu PA-4B ( 1 1 7 V ) or PA-4C(220V) AC-to-DC power adapter may be usedto power the LL-2 directly f rom a wal loutlet . Pay special a t t en t ion to polar i ty

when making power supply connections:reversed polar i ty wi l l seriously damagethe equipment . Also, do not a t tempt topower any other devices by direct connec-tion to these te rmináis or jack.

(2) F GND and AF IN TermináisThese (Frame Ground and Audio Input) ter-mináis are for connection to the EXTernalSPeaker Jack on the base station transcei-ver with a shielded cable. The shieldshould connect F GND to the outer contactof the EXT SP jack (transceiver chassisground). The LL-2 is designed for usewi th transceivers in which connection tothe EXT SP jack disables the speaker inthe transceiver.

(3) SQ, PTT, MIC, S GND and AF OUTTermináis

The SQue lch t e r m i n a l i s an i n p u t forsquelch control voltage from the transcei-ver. The control voltage should be fedthrough a 470- to 100-ohm resistor, andshould be near OV when the squelch is open(receiving a signal), and 5 to 10V DC whenthe squelch is closed. This terminal canbe lef t unconnected if the transceiver isf u l l dúplex.

The PTT te rmina l is connected in te rna l lyto a set of re lay contacts, for t ransmi t -ter control of the transceiver. Máximumkey down current required by the transcei-ver should be less than 2A.

MIC TELEPHONE TELEPHONE -LINE + -13.8V

The MIC terminal is a 600-ohm input foraudio f rom a local microphone. This isidentical to pin 6 of the LL-2 MIC jack(7) descr ibed below, so the t e r m i n a lshould be le f t unconnected when the MICjack is used.

The S GND (signal ground) terminal is thegrounding point for analog signáis, inten-ded here for use as the grounding pointfor the shield on the MIC wire just men-tioned (if used), and the AF OUT line.

The AF OUT terminal is the 600-ohm outputproviding transmitter audio for the micro-phone jack of the base transceiver. Thissignal is derived f rom either the localmicrophone or the local telephone, as sel-ected by the mode switch.

(5) - LINE +The telephone line connects through thesupplied surge suppressor to these te rmi-ná i s , w i t h due a t t e n t i o n to p o l a r i t y .Line polari ty should be conf i rmed with avoltmeter (DC 50V range), with the handsetout of the eradle ( o f f - h o o k ) if a tele-phone is in the line. Connect the posi-tive line lead to " + ".

(6) TELEPHONE Jack and TermináisThese are connected in parallel internal-ly , and are for connec t ing the basestation telephone set. If the local phoneis not equipped with a modular plásticplug matching the jack, connect the TIPand RING wires to the two termináis indi-cated (these are separated by a spare,unused te rminal ) . Polari ty is not criti-cal here.

(7) MIC JackThis six-pin jack is for connection of thelocal microphone, and matches the YaesuYM-33 Desktop microphone. Pin 1 is PTT,pin 3 is common, and pin 6 is mic audio.

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FüNCTIONS

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VR1002

Line SwitchSample Window Duration SelectorON ~] ON "1OFF |> 1 8ms ON V 275msOFF |(min. ) ON (max. )OFFJ v. ON JSample Window Period; ON-1 sec,OFF=0.7 secNot used (Ref. to chart )Sampling Time-Out Timer EnableSwitchTX Time-Out Selector 45-90-180 secDial Format Switch pul se -*-*«- toneAnswering Mode

ON=automatic OFF=0key codeDial Pulse Break Ratio

ON=60% OFF=66%Dial Pulse Speed Selector

ON=10pps OFF=20ppsSample Threshold LevelVR max -42dBm, min -34dBmBusy Tone Frequency Set (360 — SOOHz)

112 — 256Hz cut R1073 and R1 077500 — 820Hz add 180kr

parallel to R1077

PATCH UNITS2001VR2001VR2002VR2004

VR2005 QVR2006 ~

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Duplex/Simplex SelectorHybrid BalanceHybrid BalanceMicrophone Level

VR max -24dBm, mid -36dBmat line input -15dBm

Local Input LevelNotch Filter Frequency

VR max 3.6kHz, min. 1 . 8kHzLocal Output Level

VR max +3dBm, mid -12dBmat audio input -10dBm, 1kHz

FACTORY SETTING

OFF1ON M83msOFFON JON

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-36dBm( simplex)

-40dBmT '*,'

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SampleWindowTime

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54. 9

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91. 5

109. 8

128. 1

146. 4

164. 7

183

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219. 6

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FTC-1023. FTC-1043

FTC-1505. FTC-4005. FTC-2003

FTC-2640. FTC-2203. FTC-5203

FTC-5340. FTC-1015. FTC-1045

FT-2700. FT-3800