3Com 3C10402B, Administrator'S Manual

Page: 300 / 582

300 C
HAPTER
11: D
IAL
P
LAN
5 Click Apply to make the changes and keep this window open, click OK to
make the changes and close the window, or click Cancel to return to the
previous window without putting the changes into effect.
Removing a
Pretranslator from
the Dial Plan
To remove a pretranslator:
1 Click Dial Plan > Pretranslators and select a pretranslator from the scroll
list.
2 Select the pretranslator, or pretranslators, that you want to delete and
click
Remove Selected . To select all pretranslators, enable the Select check
box.
3 Click OK .
CAUTION: You cannot remove a pretranslator if any device is currently
using it. If you want to remove the pretranslator, first remove all devices
from the
Devices Using list.
Configuring the
Dial Plan for the
4ESS Protocol (T1)
The 4ESS protocol, used on T1 Digital Line Cards that are configured for
PRI operation, requires specific configuration entries in the system dial
plan. If you purchase the 4ESS protocol and SDN (Software Defined
Network) service from your long-distance carrier, you must make dial plan
changes similar to those outlined in
“Configuring the Dial Plan for SDN
Calls” on page 300 . If you want to make long distance calls or
international long distance calls using the 4ESS protocol, you must make
dial plan changes similar to those outlined in
“Configuring the Dial Plan
for North American Long Distance” on page 301 and “Configuring the
Dial Plan for International Long Distance” on page 301 .
Configuring the Dial Plan for SDN Calls
If you use the 4ESS protocol and want to make SDN calls, in the system
dial plan, configure a unique route to use for SDN calls and include the
letters SDN at the beginning of the dial string.
Example: The dial plan entry shown in Figure 16 adds the characters
SDN, which must be upper case letters, before the long-distance dialed
digits. This example assumes that SDN calls use route 4.