Typically you are charged an ISDN installation cost, a monthly flat rate for service, and usage costs.
Although Office Router ISDN models can be used for data transmission only, many ISDN providers offer data and voice service at a lower rate than data-only service. Because the Office Router transmits data over B channels configured for both voice and data as well as for data only, you can choose the less costly alternative.
Ask your provider what type of ISDN switch you will be connected to.
Fax or read the appropriate table to the sales representative.
After you have completed Step 4, proceed to Step 5 on page B-7.
Staying with the telephone company that provides your existing analog
long-distance service might be easier than choosing another carrier, although this is not a requirement.
Ask your provider what additional wiring is necessary to support ISDN on your premises. Depending on your existing wiring, you might need to have an extra pair of copper wires brought to your premises or additional inside wiring installed.
If your ISDN wall jack is an RJ-11 jack (four pins, like a standard telephone jack), use an RJ-11-to-RJ-45 cable. If it is an RJ-45 jack (eight pins), use an RJ-45-to-RJ-45 cable.
You need this information to configure the OR-U and OR-ST.
The SPID identifies your equipment to the ISDN switch. Directory numbers are the telephone numbers assigned to your ISDN B channels by the telephone company.
To configure the ISDN switch type, SPID, and/or port directory numbers on the PortMaster, see the chapter on ISDN connections in the PortMaster Configuration Guide.