Multi-Tech Systems DataTalker DT101/xx - Manual (Page 47)

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Chapter 4 - Unpacking and Configuration
4.6 Composite Link Configuration Considerations
The composite link configuration depends on the type of device used as the composite link
device. The DataTalker knows the type of composite link device being used by the setting of a
DIP switch and the sensing of conditions within the unit. In most cases you can use the default
composite link configuration.
One of four menus will appear (MMH2834 modem, DSU, ISDN terminal adapter, or external
device) depending on the device used.
If the MMH2834 modem is the composite link device, consider the following questions:
• Is DTR dialing being used? If yes, select option 1 and enter AT commands to enable DTR
dialing.
• Is the modem using a dial-up or a leased line? If dial-up, use the default configuration; if
leased, set option 4 to “Leased.”
• Is the modem being used in originate or answer mode? If answer mode, use the default
configuration; if originate, set option 6 to “Originate.”
If an internal DSU is the composite link device, consider the following questions:
• Is a DDS line being used? If yes, use the default configuration.
• Is the speed of the line 56K bps? If yes, use the default configuration.
• Is a 4-wire non-loaded metallic wire being used? If yes, set clocking on one unit to “Internal,”
and the other to “DDS.”
If an internal ISDN terminal adapter is the composite link device, consider the following
questions:
• What are your network options, channel rate, and DTE options?
• What central office switch type and protocol is provided by your ISDN service provider—
AT&T 5ESS, 5E6; Northern Telecom DMS-100, BCS-32; Siemens Stromberg-Carlson
EWSD, National ISDN-1; or NEC International Switch?
• What are the SPID and LDN numbers assigned by your service provider?
• Will the terminal adapter use dial mode operation or point-to-point leased mode operation?
• Is the terminal adapter being used in originate or answer mode?
If an external device is the composite link device, consider the following questions:
• Type of external interface (RS232C or V.35). If V.35, you must move an internal shunt.
• Set clocking and speed to match the specific external device.