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Devolo MicroLink ISDNi

ISDN modem / terminal adapter made by devolo AG (former ELSA).

Manual
Supply Voltage 9-30V AC / 9-42V DC
Power Consumption ~4.0W
Power Connector ELSA style
RS232 Connector Mini-DIN8
Line Connector RJ-11 (unusual for ISDN)

Hardware

devolo-MicroLink-ISDNi-case-front1.jpg devolo-MicroLink-ISDNi-case-back.jpg devolo-MicroLink-ISDNi-case-bottom1.jpg

devolo-MicroLink-ISDNi-pcb-perspective.jpg devolo-MicroLink-ISDNi-pcb-top1.jpg devolo-MicroLink-ISDNi-pcb-details1.jpg devolo-MicroLink-ISDNi-pcb-bottom1.jpg

We can see here:

  • Siemens PSB2186H V1.1 ISAC-S TE PSB2186H.pdf
    • 7.68 MHz XTAL
  • Siemens PSB21525 H V2.1 HSCX TE PSB2152B.pdf
  • PULSE T5015 (ISDN S-Interface transformer) T5011.pdf
  • Ambient/Cirrus Logic MD4450C-SC-B (ARM based Modem Controller)
  • 2 x ATMEL AT29C020 (2-MBit (256K x 8) 5-volt Only Flash Memory AT29C020.pdf
  • Fairchild MM74HC
  • SIPEX SP207E (RS232 Transceiver) SP207E.pdf
  • ST L4962A (Voltage Regulator)
  • 2 x Cypress CY7C109B (128K x 8 SRAM) CY7C109B.pdf
  • ...

AT-commands

OK
ATI0
644

OK
ATI1
000

OK
ATI2
OK

OK
ATI2
OK

OK
ATI3
Ver. 2.29 vom 16.09.2004

OK
ATI4
  E1    Q0    V1    X4  
 $D0  
 &C1   &D2   &S0   &Y0  
 -M0  
 \D0   \Q3   \T0   \V8   \X0  
 *Q0  

OK
ATI5
1990.000.000 C ր� 0000000064

OK
ATI6
devolo MicroLink ISDNi

OK
ATI7
CPU  OK
INT  OK
ROM  OK
RAM  OK
EEP  OK
ISAC OK
HSCX OK

OK
ATI8
OK
ATI9
(#DVL1990\00000000\MODEM\\devolo MicroLink ISDNi00)

OK

Important AT-commands

# set MSN (comma separated up to three)
AT$IMSN=0,"5210","5211",

# display defined MSN
AT$IMSN?

# display ISDN settings
AT$I?

# set ISDN settings to factory default
AT$IRES

# set D-channel protocol (DSS1/1TR6/AUTO)
AT$IDP=DSS1

# set ISDN bitrate (64000/56000) 64k bps by default)
AT$IBR=64000

# set B-channel protocol (see table below for possible values)
AT$IBP=Value

# set bearer capability for outgoing calls (see table below for possible values)
AT$ISCO=0,Value
B-channel protocol
Value Description
X75 X.75 protocol
X75T70 T.70NL protocol
V120 V.120 protocol
V110 V.110 protocol
HDLC HDLC protocol
TRANS Transparent
HDLCP HDLC-PPP protocol
BTX X.75, T.70NL and Cept/Kit
X75FB1 X.75 → HDLCP
X75FB2 X.75 → V.120 → HDLCP
X75FB3 X.75 → V.120
V120FB1 V.120 → HDLCP
Bearer capability
Value Description
0 Telephone service (3.1 kHz telephone service)
1 Telephone service (analog telephone service)
2 Group 2 fax operation
3 Group 3 fax operation

Updated by roox 3 months ago · 1 revisions

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