The Dynanet Data & VF unit, DVIU, is designed to provide data and VF interfaces with the 2048 kbit/s transmission systems. The core of Nokia DYNANET consists of primary multiplexing, digital branching and digital cross-connect equipment. Data & VF Unit provide more flexibility, compactness and space saving in data and voice application where only a limited number of different types of interfaces are needed.

Nokia DYNANET Data & VF Interface Unit

DVIU, product features

The Nokia DYNANET data & VF interface unit can be used with most Nokia DYNANET products and they can freely be installed together with Data- and VF-channelunits. Data and voice time slots can be freely mixed and they all can be transmitted via same E1 link. The DVIU is connected to Dynacard bus and it can be installed to all Dynanet subracks. DVIU needs a master unit that multiplexes data to the TDM network. DM2, DM2+, DB2, DN2 or ACM2 can operate as a master unit. Furthermore, thanks to the dynamic characteristic of the Nokia DYNANET equipment, the allocation of data & voice channels can be altered as required via the service interface both locally and remotely.

The Nokia Dynanet Data & VF interface unit consists of five different interfaces. Two data interfaces, V.11 and V.24, Ethernet interface and two voice interfaces, SUB and E&M. In addition the unit also has an own ringing generator.

Data interface and Ethernet

Ethernet interface operates as a transparent bridge and it provides one independent 10/100 BASE-T Ethernet interfaces. The Ethernet port has been combined over the WAN and all protocols are simply passed through from LAN side to WAN. Ethernet packets are carried over the TDM network in HDLC frame.

The Nokia DYNANET DVIU data interfaces cover V.11 and V.24/V.28 interfaces. The adaptation into the time slots of the 2048 kbit/s frame can be done using standard V.110 or direct adaptation

Technical Data

DVIU Electrical Specifications

Battery -72 to -20 V

Power consumption 10 W

Environmental Specification

Operation ETS 300 019, Class 3.1E

Electromagnetic compatibility (EMC) ETS 300 386 (2000)

Product codes

21135.01 Data&VF Unit,V24,V11,10/100B,E&M,SUB+RG

25035.01 Program E/21135.01, Data, Ethernet

25035.11 Program E/21135.01, E&M, SUB

Data Interfaces Data rate Timing Adaptation into the 2048 kbit/s signal

V.11 0...0,6, 1,2, 2,4, 4,8 9,2, 19,2kbps and 48, 56, 64kbps

Sync. or Async. V.110 or direct (64kbps)

V.24/V.28 0...0,6, 1,2, 2,4, 4,8 9,2, 19,2kbps and 48, 56, 64kbps

Sync. or Async. V.110 or direct (64kbps)

Ethernet Interface

LAN 10/100Base-T, IEEE 802.3

MTU 2016 bytes

WAN HDLC, RFC 1662 nx64kbps (n=1...31)

Cabling

Category 5 (CAT5)

Cable Shielded, type S/FTP

Max. cable length 100 m

SUB Interface

Interface ITU-T G.712, G.713 and Q.552

Nominal levels Rx: -7 dBr Tx: 0 dBr

Current feed 40 mA (44 mA max)

DC feed 2 x 400 ohm

Longitudinal balance loss > 46dB

Return loss > 18 dB at 200 Hz to 4 kHz

Balance impedance when nominal impedance is: •600 ohm

•270 ohm +750 ohm //150 nF (ETSI)

600 ohm 390 ohm + (620 ohm // 100 nF) 270 ohm + (1200 ohm // 120 nF)

270 + (750 ohm //150 nF) 390 ohm + (620 ohm // 100 nF) 270 ohm + (1200 ohm // 120 nF)

Metering

Nominal amplitude,terminated at 200 ohms > 1.5 VRMS

Frequency 12 kHz ±60 Hz

DVIU, product features

Technical DataSUB and E&M interface

The E&M interface has a variety of features controlled by software, e.g. channel level settings or 2-wire or 4-wire control. SUB provides normal POTS channel features. It can also be used in hot line applications.

Ringing Generator

The ring generator is needed with subscriber interface to generate the ringing voltage used for the ringing tone of the telephone set. The ringing generator of DVIU can provide the ringing voltage also to other Dynanet SUB units installed in the same subrack. The ringing voltage fed from DVIU has to be isolated from backplane if external ringing generator is in use. This is the factory setting. If the ringing voltage is needed in other SUB units in the same subrack, ringing voltage can be fed to the backplane.

Data Interfaces Data rate Timing Adaptation into the 2048 kbit/s signal

V.11 0...0,6, 1,2, 2,4, 4,8 9,2, 19,2kbps and 48, 56, 64kbps

Sync. or Async. V.110 or direct (64kbps)

V.24/V.28 0...0,6, 1,2, 2,4, 4,8 9,2, 19,2kbps and 48, 56, 64kbps

Sync. or Async. V.110 or direct (64kbps)

E&M Interface

Interface ITU-T G.712, G.713 , G.714, G.715

Auto-frequency Performance

Relative levels

4-wire connection

Input of transmit dicetion -13.0...+7.0 dBr

Output of receive direction -15.0...+7.5 dBr

2-wire connection

Input of transmit dicetion -17.0...+3.5 dBr

Output of receive direction -12.0...+7.5 dBr

Level setting steps 0.5 dB

Level calibration step 0.1 dB

Nominal impedance 600 ohms

Return loss 300 to 3400 Hz > 20 dB

Signalling

Signalling bits per channel 2+2

Distortion (max.) ±2.5ms (±4 ms)

Processing Software control

DVIU Mechanical dimensions

Height 233 mm (6 U)

Width 25 mm (5 T)

Depth 160 mm

Weight 290 g

Nokia CorporationNetworksP.O. Box 300FI-00045 Nokia Group, FinlandPhone: +358 (0) 7180 08000www.nokia.com

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