
What If I Already Have ISDN Service? 121
For Nortel DMS-100® Switches
If your line is provisioned on a Nortel
What If I Already Have If you already have ISDN service installed for your ISDN LAN Modem and you used
ISDN Service?an ISDN Ordering Code (IOC) other than
How S1 Differs from Capability Package S1 is a special ordering code which provides support for
S1 does not, however, provide support for the other supplementary voice features supported by the ISDN LAN Modem (Call Conference, Call Transfer, and Call Forwarding) which are available under
All three ordering codes, S1,
If You Are Currently Using Capability Package S1 and Would Like to Add
Supplementary Voice Services
If you are currently using Capability Package S1 and would like to use all or some of the supplementary voice services supported by the ISDN LAN Modem, firmware version 5.1.0 or later, 3Com recommends that you call your telephone company and ask to have the following extra services added to Directory Number 1, Directory Number 2, or both, on your existing line (Note that there may be an additional charge to have these services added.):
■For Voice Mail, ask for Voice Mail
■For Call Conference
■For Call Forwarding, ask for Call Forwarding Variable
■For outgoing Caller ID Blocking, ask for Calling Number Privacy
Some telephone companies may choose to refer to the Flexible Calling features by unique terminology.
If You Are Unable to Have Supplementary Voice Services Added to S1
If your telephone company does not allow piecemeal additions to your line provisioning (for example, ACO and FCO are not available on a Lucent 5ESS Custom Switch), 3Com recommends that you change your line to Package U or