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ISDN Switch Types
The following table summarizes the different types of switches
supported by the IRT-1001 and IRT-1002, as well as some related
information on the switch types (number of phone numbers and SPID
numbers). It should be noted that the information in this table is for the
common case and is recommended for those cases. Exceptions still
exist to these figures. You can locate the provisioning information for the
appropriate North American switch type in the next sections.
Switch Type
AT&T 5ESS NI-1
AT&T 5ESS Point to Point
AT&T 5ESS Multipoint
Northern Telecom NI-1
Northern Telecom Custom
DSS1
1TR6
Provisioning For U.S. Switches
For the U.S., the IRT-1001 and IRT-1002 (both the U and S/T interface)
have been approved by Bellcore and have the IOC (ISDN Ordering
Code) " S" Capability, EZ-ISDN 1. Provide this information to your
telephone company when you order your ISDN line. If your telephone
company is not familiar with this IOC, then ask them what kind of switch
you will be connected to and use the information under each switch type
to order your ISDN line.
Provisioning For the AT&T 5ESS Switches
The AT&T 5ESS switch type supports three types of ISDN service.
These are: National ISDN-1 (NI-1), Multipoint, and Point-to-Point.
IRT-1000 series User's Guide
Geography
North American
North American
North American
North American
North American
Europe, Asia
Germany
No. of Phone #s
No. of SPIDs
2
1
2
2
2
2
2
2
0
2
2
2
N/A
N/A
131
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