Local Integrated Services Digital Network/Primary Rate Interface (ISDN-PRI) provides a high-speed, intelligent
connection. Local ISDN-PRI supports voice, data, video, and applications such as Internet Access, Remote
LAN Access, Call Centers, Disaster Recovery, and File Transfer. This service supports simultaneous voice
and digital data calls over an industry standard primary rate interface T1 (1.544 Mbps).
 BENEFITS
OF ISDN-PRI
Flexibility
Local, long distance, voice, and digital data calls are provided over the same T1 connection. Customers
can also establish high-speed digital connectivity instantly. ISDN-PRI provides bandwidth when you need
it and connectivity where you need it.
Faster call setup
A separate high-speed signaling channel means callers receive faster call setup.
Trunking efficiency
The faster call setup and ability to support multiple call types can result in a significant reduction
in the number of trunks required.
The power of information
The ability to receive Caller ID information on inbound calls makes ISDN-PRI ideal for Call Center applications.
ISDN-PRI allows you to access account information and serve your customers more efficiently.
Low rates
Competitive local service rates and discount plans are available. CMC Telecom long distance calls made
on ISDN-PRI allow for one stop price and service.
FEATURES AND CAPABILITIES
ISDN-PRI offers enhanced features that help businesses operate more effectively and efficiently. These
features include:
Non-Facilities Associated Signaling (NFAS)
NFAS is the ability to have a D-channel on one PRI to provide the signaling and control of other PRIs.
This allows the other PRIs to utilize all 24 of the B-channels for traffic.
Backup D-Channel
When utilizing NFAS, it's important to realize that the failure of the D-channel will result in failure
of all PRIs controlled by that D-channel. The backup D-channel provides customers with the mechanism to
automatically switch over from the primary D-channel to the backup D-channel if the active D-channel fails.
Caller ID
Provides customers with the calling information of inbound calls. The customer CPE must be properly equipped
to view this information.
Call by Call Service Selection
The ability, on a per-call basis, to indicate the type of call desired, without the need to dedicate specific
channels for specific call types. (Public inbound and outbound, voice, and data are the call types supported.)
Virtual Facility Groups (VFGs)
VFGs allow for the allocation of circuit capacity for a given service type (inbound and outbound calls).
LOCAL
ISDN-PRI IS IDEAL FOR:
Medium to Large Size Business customers
Customers needing clear 64kb for faster call setup for voice, data or video.
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