User guide

14 Release Notes for Cisco 2500 Series for Cisco IOS Release 12.0 T
New and Changed Information
New and Changed Information
The following sections list the new hardware and software features supported by the Cisco 2500
series in Release 12.0 T.
New Software Features in Release 12.0(4)T
The following new software enhancements are supported by the Cisco 2500 series in
Release 12.0(4)T.
One New Feature Set
One new feature set has been created for the Cisco 2500 series in Release 12.0(4)T:
• IP/H.323—c2500-ix-l
Dynamic Multiple Encapsulations for Dial-in over ISDN
The Dynamic Multiple Encapsulations feature allows incoming calls over Integrated Services
Digital Network (ISDN) to be assigned an encapsulation type such as Point-to-Point Protocol (PPP),
X.25, and ISDN Link Access Procedure, Balanced-Terminal Adapter (LAPB-TA) based on calling
line identification (CLID) or Dialed Number Identification Service (DNIS). It also allows various
encapsulation types as well as per-user configurations on the same ISDN B channel at different
times according to the type of incoming call.
The Dynamic Multiple Encapsulations feature allows per-user configuration for each dial-in caller
on any ingress ISDN B channel on which encapsulation can be run independently from other B
channels on the same ISDN link. The caller is identified by CLID or DNIS to make sure that only
incoming calls with authorization and valid user profiles are accepted. If the protocol is PPP,
authentication and profile binding can also be done by PPP name.
Dynamic multiple encapsulations are especially important in Europe where ISDN is relatively
inexpensive, and it is desirable to allow maximum use of all B channels on the same ISDN link,
especially for large scale dial-in. Further, the feature removes the need to statically dedicate channels
to a particular encapsulation and configuration type, and improves channel usage.
Parse Bookmarks (1) Yes Yes Yes Yes Yes Yes Yes
Switching
Cisco IOS STP
Enhancements
(1) Yes Yes Yes Yes Yes No No
Connectivity
RIP Enhancements (1) Yes Yes Yes Yes Yes Yes Yes
Table 6 Feature List by Feature Set for the Cisco 2500 Series, Part 3 (continued)
Feature Set
Features In
Enterprise
Plus
Enterprise
Plus
IPSec 56 FRAD
LAN/
FRAD/
OSPF
LAN/
FRAD
Remote
Access
Server ISDN