Tixi Message Modem ISDN & Fax (Model: EF20-BB)¶

• Table of contents
• Tixi Message Modem ISDN & Fax (Model: EF20-BB)
  • • Hardware
  • AT-Commands (ModemMode only)
    • Important AT commands

An ISDN terminal adapter made by the German company Tixi.Com GmbH & Co. KG

When connected to an external PC the AT-command mode (ModemMode) is used.
The device can also operate autonomously in the following modes:

• Express Email - directly via Phone Lines (no internet connection needed)
• SMS - Send an SMS message (mobile and PSTN)
• FAX - Send text as fax
• EMail - Send Internet e-mail(POP3 over a PPP internet connection)
• POP3 - Get Internet e-mail (POP3 over a PPP internet connection)
• RS232 Transparent Mode (TransMode)
  • switches the RS232 line to a connected device during dial-in from the outside so that the device can be controlled remotely.

Manual

• TMM-Manual.pdf
• TMM-Handbuch.pdf (german)
• AT-ISDN_de.pdf (AT-commands, german)
• Tixi_Industry_Modems_ISDN-analog-GSM-GPRS-price-list-2004.pdf (german)

Supply Voltage	12V AC 0.5A
Power Consumption	~4.0W
Power Connector	barrel
RS232 Connector	DB9
Line Connector	RJ45

Hardware¶

We can see here:

• Ambient MD4450C (Controller)
• Ambient MD5660DT (DSP) MD566x_Product_Brief.pdf
• Ambient MD1724T (Analog Front End)
• HFC-SP A ISDN 2BDS0 (ISDN HDLC FIFO Controller) HFC-SP.pdf
• 2 x VAC 5024x028 (External ISDN S0 Line Transformer)
• Freescale MC14LC5480 (5V PCM Codec-Filter) MC14LC5480.pdf
• Nexperia 74HCT04D (HEX inverter) 74HC.pdf
• SAMSUNG K6X0808C1D (32K x 8 bit CMOS Static RAM) K6X0808C10.pdf
• SAMSUNG K6X8016C3B (512K x 16 bit Low Power Full CMOS Static RAM) K6X8016C3B.pdf
• AMD AM29F160DB-75EF (16 Megabit (2M x 8-Bit/1M x 16-Bit Flash Memory)) AM29F160D.pdf
• Intersil HIN207CB (+5V Powered RS-232 Transmitters/Receivers) HIN207CB.pdf
• Fairchild MM74HCT (Quad 2 Input NAND Gate) MM74HCT.pdf
• EPSON Electronics RTC-4513 (Real Time Clock) RTC-4513.pdf
  • CR2032 battery

AT-Commands (ModemMode only)¶

ATI
64000EF

OK
ATI0
64000EF

OK
ATI1
Main 2.00.05.000 Boot 2.3.0 Modem 1.4.00

OK
ATI2
Modem Mode
Express E-mail Send
Express E-mail Recv
SMS Receive
SMS Send
POP3 Client
SMTP Client
Text Fax
Script Send

OK
ATI3
JD20-S1F2K-120;RTC=RTC4513;FlashOnboard=2MB

OK
ATI4
EF20

OK
ATI5
ISDN: Cologne HFC-S+
DSP: MD5660DT

OK
ATI6
DSS1

OK
ATI7
Tixi.Com GmbH

OK
ATI8
SD_20005.BIN

OK
ATI9
TIX2017\01836601\MODEM\\Tixi Message Modem ISDN & Fax

OK
...
...
...
ATI50
2005-09-23 09:52:42

OK
ATI51
Tixi.Com GmbH Berlin

OK

Important AT commands¶

AT command	description	notes
AT+TERASE	Factory Reset
AT#H	query MSN
AT#Z=5210	set MSN to 5210
AT**ISDN=0	set D-channel protocol to DSS1
AT&V1	show config

ISDN B-channel protocol

AT command	description	notes
ATB0	V.110	not supported with all firmwares !!!
ATB3	HDLC (default)
ATB4	HDLC transparent
ATB5	Byte transparent
ATB10	X.75-NL
ATB22	T.70-NL-CEPT
ATB23	T.90-NL
ATB31	ML-PPP

ISDN D-channel Protocol

AT command	description
AT**ISDN=0	DSS1 (default)
AT**ISDN=5	Bellcore National ISDN-1/2 (USA)
AT**ISDN=6	NTT INS-NET (Japan)
AT**ISDN=7	AT&T 5ESS (USA)
AT**ISDN=8	VN-4 (France)

Baudrate for V.110 connections

AT command	description
ATN1	1.200 bps
ATN2	2.400 bps
ATN3	4.800 bps
ATN4	9.600 bps
ATN5	19.200 bps

Misc

AT command	description
AT**BSIZE=x	B-channel block size
AT**K=x	Layer 2 window size (1..7)
set Low Layer Compatibility (LLC) for outgoing connections in HEX)
AT**LLC=-	delete LLC (empty parameter, default)
AT**LLC=8890	set LLC to 8890