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,...

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...

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...

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...

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...

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...

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...

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...

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...

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...