ISDN ordering information (for the U.S.)
Date: _______________________________________________
To: _________________________________________________ From: _________________________________________________________
Fax number: _________________________________________ Fax number: ___________________________________________________
Phone number: _______________________________________ Phone number: _________________________________________________
National ISDN-1 AT&T Custom 5ESS Northern Telecom DMS Custom
(5E6, 5E7, 5E8, and 5E9) (with BCS-33 through BCS-36)
Service type Choose Circuit-Switched Data Choose Circuit-Switched Data Choose Circuit-Switched Data
(CSD) on the first B-channel. (CSD) on the first B-channel. (CSD) on the first B-channel.
Choose Circuit-Switched Data/Voice Choose Circuit-Switched Data/Voice Choose Circuit-Switched Data/Voice
(CSD/V) on the second B-channel. (CSD/V) on the second B-channel. (CSD/V) on the second B-channel.
TEI assignment Dynamic Dynamic Dynamic
Number of call 1 if you choose CSD/V; 1 if you choose CSD/V; N/A
appearances otherwise none otherwise none
Terminal type A (basic call terminal) D if you choose CSD/V; A (basic call terminal)
otherwise A (basic call terminal)
EKTS No No No
Maximum number 2 2 2
of B-channels
Bearer service restrictions None (DMD on both channels) None (DMD on both channels) None
Packet mode No No N/A
Phone numbers and SPIDs 2 (one per B-channel), 2 SPIDs 1 phone number, no SPID 2 (one per B-channel), 2 SPIDs
Protocol version 2 (on Northern Telecom lines only) N/A N/A
control (PVC)
One touch N/A No N/A
Auto hold N/A No N/A
Line configuration N/A Point-to-point N/A
(do not order multipoint)
Ringer indicator N/A N/A Yes
Authorized call types N/A N/A CMD
MXK N/A N/A Not applicable, or default
Make sure you receive the correct
service profile identification numbers
(SPIDs) with your ISDN line. Also
make sure your ISDN provider
informs you which B-channel has
voice capabilities.
Note:
The information in this
section is for Custom 5ESS lines
only. If you can order a 5ESS line
that is configured to the National
ISDN-1 standard, please refer to
those guidelines.
Make sure you receive the correct
service profile identification numbers
(SPIDs) with your ISDN line. Also
make sure your ISDN provider
informs you which B-channel has
voice capabilities.
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