OmniConnect / ISDN
User’s Manual
Page 16
Part number 613-10787-00
U/EZ-ISDN 1 does not provide support for simultaneous voice and data on the same
Directory Number, only alternating voice and data is supported. Therefore, if a DN is being
used for a data call, it will be unavailable for an incoming voice call. Incoming calls to the
DN being used will ring busy. However, if the other DN is free, incoming calls will be
allowed on the that DN. Outgoing voice calls are possible since the OmniConnect controls the
outgoing calls for both data and voice. If simultaneous voice and data services are required,
either IOC S or S1 (see below) must be used with Supplementary Voice Services or if the
switch being used is an AT&T 5ESS NI-1 the parameter MAXBCHL must be set to 2.
Neither U/EZ-ISDN 1 nor V/EZ-ISDN 1A provide automatic support for outgoing Caller ID
blocking. To request to have Caller ID blocked added to either DN or both, the user must ask
for Calling Number Privacy. If EZ-ISDN 1 is not available, review the following list and
order ISDN lines from the local service provider using capabilities S or R. Request the
appropriate IOC for the application.
3.5.3.1.2.
Capability S (previously generic data M) or S1 (NYNEX)
This ordering code is recommended for applications such as Internet access, BBS and modem
pooling. Capability S allows a maximum of two simultaneous voice and data calls
automatically on both directory numbers. It is the most feature-rich after EZ-ISDN 1 and
supports most voice and data applications. It does not, however support the bulk of the
supplementary features (call conferencing, call transfer, call forwarding and call hold)
supported by EZ-ISDN 1 or IOC U. Capability S1 also provides Additional Call Offering
(ACO) allowing Call Waiting and Dynamic Bandwidth Allocation on both telephone
numbers, whereas U/EZ-ISDN 1 provides ACO automatically on the first DN. Voice mail is
also not supported by S1.
In some areas, ISDN tariffs may warrant the use of ordering codes with fewer features. For
example, in a particular region, there may be additional monthly expense associated with
having voice service on each B channel. If data-only applications are being used, Capability R
(previously Generic Data I) may be more cost-effective than Capability S or S1.
3.5.3.2.
Capability S
•
2B service
•
Both B channels simultaneous voice and data
•
Two directory numbers
•
Caller ID
3.5.3.2.1.
Capability R (previously generic data I)
This ordering code is recommended for applications such as Internet access, BBS and modem
pooling. Capability R does not allow voice calls. In some areas, ISDN tariffs may warrant the
use of ordering codes with fewer features. For example, in a particular region, there may be
additional monthly expense associated with having voice service on each B channel. If you
have a data-only application, Capability R (previously Generic Data I) may be more cost-
effective.
•
2B service
•
Both B channels data only
•
Two directory numbers
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