Vodavi Starplus Dhs-l Technical Manual

							DHS- L Ge n er al D esc rip tio n 2-3
Ch apter 2 - Description a n d In stallation
DHS- L General Des cription
Sys te m Tech no lo gy
TheDHS-Lproduct line incorp ora tes state of the art digita l technology fo r voice s witching
and c all p roc e ssi ng u ti li z ing P uls e C ode M odul ati on a nd T im e D iv is ion Mul t ipl e xing
(PCM/TDM). Th eDHS-Lfamily is engineered to allow migration of theDHS-Ldi gi ta l
term ina ls and termina l acces sories throughout the entire product line. ISDN -like, 2B+D
te chnology comp le ments th e s ystem archite cture and ca pabilitie s. On one ind ustry
standa rd twiste d pa ir, k ey te le phone s p erform all sys te m f unctions and voice
communications . S ome additiona l f eatures of theDHS- Linclude:
†A non-b lock ing switch, with no loss or degrad ation of voice s ign als .
†St o re d-P ro gra m Co nt ro l ( SP C), ut il iz i ng a 8- bi t, 16 M Hz m ic r o pro c e sso r.
†Memory consists of 512 KB of Rea d Only Memo ry (ROM) and 256 KB of Random
Acce ss Memory (RAM).
†Battery Back ed- Up RAM (128 KB)
Whe n an anal og dev ice in te rfa ce is re qui re d (a nd a DT IB- 8 card i s i nst al le d), a 2 -Por t
Single L ine Adap te r (SLA) m ay b e con nected to any one dig ital station port. Th e 2B+ D
technology allows theDHS- Lto split on e d igital key telephon e p ort v oice channe l (B1)
and the s econd voice cha nnel (B2) to p rov ide two inde pend ent S LT dev ice in te rf aces .
The2-PortSLAmaybeexpandedwiththe2-PortAnalogExpansion(inthe2-PortCO
Module hous ing ). T he 2- Port S LA and 2- Port Analog E xpan sion ea ch require one
dedicated digital station port.
Sys te m Co mp on en ts
KSU Comp onen ts
TheDHS- Lp la tfor m is c ompr is ed of t hr ee ke y t el ep hone mode ls and a mo dula r Key
Se rv ic e Uni t (K SU) whic h house s t he fol low ing K SU c om ponen ts :
†Main Processing Board (MPB) (required)
†Miscellaneous Interface Service Board (MISB) (required)
†8- or 16-Circuit Digital Telephone Interface Board (DTIB-8 or 16)
†16 -C ir c uit S ing le Li ne Int er f ac e B o ard (SL IB )
†16 -C ir c uit S ing le Li ne Int er f ac e B o ard (SL IB ) wit h M e ss age Wai t
†8- Circuit Loop S ta rt CO Line Boa rd (LC OB)
†Po w e r Su p p ly
Th e ap plic ation o f an alo g d ev ice s i n theDHS- Lhas the e f f ect of two-t o-one port ga in. F or
ev er y si ngl e dig ital p ort us e d to int erfac e a 2-Port S LA /E xp ans io n, two an alog p orts are
ava ilab le .
Th e SLA onl y work s o n the DTIB-8. 
						

							2-4 D HS - L G e n er al D e s cr ip t io n
Ch apter 2 - Des crip tion and Ins tallation
†24-C hanne l T1 Digita l Trunk Interf ace Board ( T1IB)
†DT MF Rece iv er (mount s on MI SB)
External Components
†Exe cu ti ve Key Te le phone
†Enha nced Key Te le phone
†2-Port Analog Adapter
†2- Po r t S LT Expa nsi o n
†Direct Station Selector (DSS)
System Administration
The sy st em def ault c us tom er da ta bas e ca n be e nte r ed and ch ange d, un der pa sswo rd
control, from any Executive Key Telephone. All Customer information is protected by an
int e rna l r e ch arg eab le Ni Mh ba tt er y. Progr amm abl e pass wor d pr ot ect ion is al lowe d f or
ea ch st at ion , sy st em admi ni st rat or and ext e rna l (DI SA ) cal l er s. An opt iona l PC
Programm ing Software is av ailab le to program theDHS-Lsys tem. T his S oftware a llows
the user to program offline and then upload directly to the system. TheDHS-Lconnects
through the MPB to use the PC Programming Software.
Key tel eph one s a re av ail able in two c olor s: O ff W hite , and C ha rcoal Gray . 
						

							DHS- L Ge n er al D esc rip tio n 2-5
Ch apter 2 - Description a n d In stallation
Key Service Unit
The KS U i s e nc ase d i n m et al wi th a r emo vabl e fr ont c over . The KSU di mens ions ar e:
†Wi dth : 2 1. 6 in.
†Height: 18.1 in.
†De pt h: 1 5 in.
Two la rge slots located on the back of the KSU are d es igned f or wall m ounting via a wall
mount bracket. There are two screw slots located o n the bottom, back of the cabinet also
for aiding in wall mounting.
The cab ine t was de sig ned with conv enien t s ervicing in mind. T he front cove r of the
c abi net c a n e asi ly be re move d u sin g t he key pr ovid ed to unloc k t he s ec ur in g l atc h
mecha nis m. Once remov ed, all servicea ble comp onents are eas ily access ed (Refer to
Figure 2- 1). This includes the backplane, cards, card slots, station and trunk connections,
gro und conne ctions, ba ttery con nections , p ower su pply an d fus es .
Figure 2-1: DHS-L KSU (cover removed)
The KS U contains a ll of the circuitry for sys te m ope ration. The s ystem’sarchitecture is
based on the universal slot concept, which allows a great deal of flexibility when
planning the sys te m conf iguration . 
						

							2-6 D HS - L G e n er al D e s cr ip t io n
Ch apter 2 - Des crip tion and Ins tallation
Cab in et Lay out
The cabinet consists of two sections (refer toFigure 2- 1):
†The three slots on the left s ide are reserved for the control ca rds .
- T he first control ca rd slot is reserved for the MPB.
- T he se con d control card s lot is re serv ed for the MISB.
- T he third control card s lot is reserv ed for connection to a dig ital trunk: a T1 card
(whe n conne cting the sys te m to T 1 trunks ).
Figure 2-2: KSULayout
†The re st of t he nin e s lot s, t he univ er sal sl ot s, a re re se r ved for p er ip her al car ds, s uch as
anal og tr unk a nd s ta ti on car ds supp or te d by t he s yst em .
The thir d cont rol car d sl ot can h ouse a T1 card o nly . In con figur ation s wi th no d igita l
tr unk s (an alog t runk s o nly ), t his sl ot wil l rema in e mpty .
POWER SUPPLY
Power Supply
Control CardsPeripheral Cards
M
S
BD
T
I
B
1
6 M
I
S
BS
L
I
B
1
6D
T
I
B
8L
C
O
B
8
T1 Slot 
						

							DHS- L Ge n er al D esc rip tio n 2-7
Ch apter 2 - Description a n d In stallation
Power Suppl y
The sy st em’s powe r supp ly plug s i nto a de di cat ed ci r cu it eq uipp ed wit h 1 1 7VAC +/-1 0 %.
The power supply receives single-phase main power (117 VAC at 60 Hz) and converts it to
app roxi mat el y 35 VD C for i nt er nal sy st em usage , wit h 2 4 VDC ba tt er y b ac kup int e rfa c e.
Figure 2-3: Power S upply
Three fus es , that ca n be accessed through the power supp ly front panel, provide
protection to a ll internal sys tem circuitry.
The KS U shoul d be plu gged in to an i sol ated, gr ounde d ci rcui t.
AC Po wer
AC Pl ug
AC Fuse
Battery Backup
DC Fus e
Battery Fuse Swi tch
On/Off 
						

							2-8 D HS - L G e n er al D e s cr ip t io n
Ch apter 2 - Des crip tion and Ins tallation
Main Processing Board (MPB)
The MPB contains a ll of th e ne ces sary c ircu itry to ope rate the syste m. T he MPB also
c onta ins t he s yst em mem ory and m ai nta ins a c us tome r -r el at ed d at abas e i n s yst em R AM .
All call pro ce ss ing and sys te m ma inten ance are p erformed by the MPB. T he MPB use s a
st anda rd st ra ight -t hr ough ca ble .
Two RS-232 serial DB-9 conn ectors are positione d in the front of the MPB. T he top
connector, which is marked DBA, is used for connection to a pers onal compu ter with
remote prog ram ming software and with IC LID . T he bottom connector, ma rked S MDR, is
used for connecting to a Station Message Detail Recording (SMDR) device.Ta b l e 2 - 1
shows the RS -232 p ort conne ctions .
Table 2-1: RS-232C DB-9 Connector
DCE Male DB- 9 De signa tion
K
S
U1DCD
2RX
3TX
4DTR
5GND
6DSR
7RTS
8CTS
9RI 
						

							DHS- L Ge n er al D esc rip tio n 2-9
Ch apter 2 - Description a n d In stallation
The MPB is depicted inFi gur e 2- 4; specifications are listed inTabl e 2-2:
Fi gure 2-4 : M PB
A flashing L ED loca ted on the front pa nel of the MPB indicates norm al sys tem op eration.
When the LED is steady-ON, or -OFF, the MPB is likely malfunctioning.
Tabl e 2 -2: MPB S peci f ic at i ons
Mir copro cesso r In tel 80 88-2 Com pati bl e at 16 MHz
Syst em EPR OM 512 K B
Syst em RA M 256 K B
Batt ery-bac ked R AM 128 K B
Rea l Time C lo ck Da l la s Semic on d uc tor DS12 16D 
						

							2-10 D HS - L G e n er al D e s cr ip t io n
Ch apter 2 - Des crip tion and Ins tallation
Mi sce llaneo us Se rv ice Board (MIS B)
The M I SB ha s t he nec e ssa ry c ir c uit r y r equi r ed to p er for m c onfe re nc i ng, p agi ng, t one and
cade nce gene ra ti on, Mus ic- On- Hol d (MO H) an d Backg round Musi c (BGM), int er nal
mel ody gene r ati on, and mult i -pur pos e d ry re la y c ont ac t s ( spe c ifi c at ions ar e li st e d i n
Ta b l e 2 - 3). The M IS B gen er at es all of the sys te m c ad enc e s an d audi bl e ca ll pr ogr ess t ones
usedbythesystemandstoresthetonesinEPROMusingthemu-law( -law)method.
Table 2-3: M IS B Function S pecif ications
Function Specification
Musi c I nput (2)Termination Input Transformer (non-grounded)
Impedan ce 600
Input Level -15 dB
Paging Output (2)Termination Input Transformer (non-grounded)
Impedan ce 600
Ou t p ut Le v e l - 1 0 d B
Rel ay C o nt ac ts/ Lo ud B ell ( 2)Co nta c t T y pe Dr y, F or m A
Max . R ated Vol tage 50 V DC
Max . R ated Cu rren t 1.0 Am p
Max. R ated Power 30 VA
µ
Ω
Ω 
						

							DHS- L Ge n er al D esc rip tio n 2-11
Ch apter 2 - Description a n d In stallation
Figure 2- 5dis pla ys the MI SB b oar d.
Fi g u r e 2- 5: MI SB Layo u t
All connection s to the MIS B are ma de through a 24-pin cham p amp henol-type conne ctor
on the front of the MIS B.
The MISB can accomm odate a n optiona l p iggy back D TMF receiv er for an a dditional eight
re ceive rs and eight dial tone dete ctors f or use in configura tions conta ining m any analog
telephone p orts. It a ls o has a prop rietary C MOS device which ha ndles th e conf erence
clocking fun ction of the system. T he device contains eig ht identical circuits, ea ch capab le
of conferencin g up to four parties; it operates on an internal 8. 192 MH z clock and outp uts
three frequencies used by the system: 2.048, 4.096, and 8.192 MHz.
The MISB ha s a red LED in dica tor that flas hes to ind icate that the ca rd is functional. 
						

							2-12 D HS - L G e n er al D e s cr ip t io n
Ch apter 2 - Des crip tion and Ins tallation
Per ip her a l Ca rds
DT MF Re ceiv er B oa rd
The DT MF i s a s mal l card mount ed as a pigg yback on t he MIS B. T he DTMF Rece iv er car d
conta ins 8 DT MF rece iv ers a nd 8 d ial tone de te ctors to pro vid e a dditional res ource s to
the s yst em whe n ne ede d.
Figure 2-6: DTMF ReceiverBoard
T1 IB Boar d
The T1 I nte r face Boar d (T1 I B) pr ovi des the sy st em i nt er face to a T1 di gi ta l C O L ine wi th 2 4
channels . The T1 includ es a PLL (Phas e L ock Loop ) circuit and two DTMF receivers . The
di gital l ine s ca n be pr ogr amme d a s L oop, Ground , D ID, E&M W ink, and E&M Imme dia te .
The T 1 has a 15-pin DB connector (DB- 15) f or co nnection to th e MPB.
Figure 2-7: T1IB Board
PINOUT
DH S- L RJ-45 (CSU )
11 1
32
94
15