Main Tech Page

© 2015 DIGIFON

Motorola BitSurfr Pro Guide

Check to make sure the ISDN port on back of the BSP is a U-interface so users in N. America can plug the ISDN line directly into it without the need of an external NT-1. If it says S/T then it is intended for use in Europe or with an external NT-1 in N. America.

When you power up the BSP without an ISDN line connected the Line Status light will be steady red. When you plug an active ISDN line into the ISDN port on back of the BSP, the Line Status light will blink alternate red/green until you enter the correct SPIDs and restart the network link. Then the Line Status light will turn steady green.

Note: Even if you don’t enter the correct SPIDs, a flashing alt. red/green light indicates that the BSP recognizes an active circuit. This, alone, is useful information if you are uncertain if the line is dead or alive.

The physical data port on the BSP is a DB25 RS232 connector. Serial ports are typically not included on newer computers these days so I use a Keyspan USA-19 USB to RS232 serial DB9 adapter thingy.  You will need an RS232 cable with a DB25 connector on one end and a DB9 on the other.

Connect the Keyspan adapter and cable. To configure the SPIDs use a standard VT100 terminal emulation app like HyperTerminal in Windows or ZOC for Mac.

Note: Mac users should get the Keyspan adapter and RS232 serial cable before downloading ZOC so they can get the full 30-day trial period. To keep using the software after 30 days you have to pay for it ($79).

For Windows:
Launch HyperTerminal. In Connection Description window give the name BitSurfrPro. Select the COM port associated with the USB adapter (COM3, maybe.) Use Port Settings:
Bits per second: 57600 (or the highest setting the COM port will support – 9600 will work OK.)
Data bits: 8
Parity: none
Stop bits: 1
Flow control: Hardware
Clik OK.
In the file menu > properties > settings set the emulation for VT100.
Type AT and hit enter. The program should return an “OK”.

For Mac:
Launch ZOC. Go to Options > Edit Session Profile...
Select Layout. Under Font & Terminal Sizing select “retain font size and rows/cols.” Under Terminal Size set 80 Columns and 24 Rows.
Select Devices.  Under I/O Device select Serial/Direct. In the resulting Serial/Direct window on right, Scan to the correct Com-Port. Use 9600, 8N1.
Select Emulations. Under Emulation select VT100.
Click on Save As... and Save Session Profile as BitSurfr.zoc
Go to File > Quick Connection. Connect to localhost. Under Options select Session profile: BitSurfr.zoc. Click on Connect.
Type AT and hit enter. The program should return an “OK”.

There is a handy semi-graphic configuration screen that you access from the AT prompt by typing AT@MENU. You have the choice of displaying the Local Menu in ASCII or GRAPHICS. Change the display option to ASCII in the HELP screen if lines are displayed as characters.

Navigate to the Menus region using the Spacebar. Use the Arrow keys to move the cursor from item to item within a region – go to NET SWITCH to configure SPIDs. Use the Enter key to select/edit an item such as SPID and Directory Number.

Network Switch Type


Network Switch Version


DROP Feature Value


CONFERENCE Feature Value


TRANSFER Feature Value


MSG WAITING Feature Value


Save Switch/Globl Profile


Restart Network Link


Port To Configure












Directory Number





The BSP allows 1 Port for Data and 2 Ports for Voice. You likely won’t be using the Data function so the Voice Ports are the important settings, but I configure the Data port for line 1 anyway.

Be sure to save your Switch/Globl Profile and Restart Network Link.  Check the Line Status light has changed to steady green.

Connect a standard telephone to the line 1 port on back. You should hear dial tone. Try calling 700-555-4141 and listen to the long distance confirmation.

Hyper Terminal users: When you quit be sure to save your file. Next time you launch Hyper Terminal cancel out of the Connection Description and select Open... under the File menu. Then select BitSurfr Pro and hit Open. You’re ready to go.

I suggest you stick a label with the SPIDs on the BSP so you know what ISDN line it is configured for.