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ISDN Line Ordering and Configuration
Telephone Switch Support
Your telephone company may offer a variety of ISDN switch types. You must contact your service
provider and find out which type of ISDN service is available.
The following switch types are currently supported by the CyberSWITCH 100 within the U.S.:
•
National ISDN 1 (NI-1)
•
AT&T 5ESS w/Custom Software
•
DMS-100
Outside of the U.S. the following switch types are currently supported:
•
NET3 (European ISDN)
•
NET3SW (European Swiss-variant)
•
NTT (Nippon Telegraph and Telephone)
•
KDD (Kokusai Denshin Denwa Co., Ltd.)
•
French Delta (VN4) switches
ISDN BRI Line Configuration
You need to order one Basic Rate Interface (BRI) ISDN line from your service provider. The Basic
Rate Interface ISDN line provides two full duplex 64 (Kbps) B channels used for voice, data, fax,
etc. and one full duplex 16 Kbps channel used for signaling. Each B channel can be used for a call;
i.e., two calls can occur at the same time. Services vary from individual service providers.
Full 64 Kbps for each channel (referred to as "clear channel") may not be available
NOTE
across the entire communications link. Today, many providers still use in-band
signaling (the 8 Kbps signaling is taken from the B channel bandwidth) so that you
may only achieve a 56 Kbps channel speed.
The service provider requires some information from you about your configuration. You must
provide your service provider with the required switch settings for the provider's telephone switch
(see
Telephone Switch Parameters
two months before requiring the installation and use of the ISDN service.
2
CyberSWITCH 100 Advanced User Information
in this chapter). Consult with your service provider at least
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