Cisco Cisco IOS Software Release 12.2 릴리즈 노트
137
Release Notes for Cisco IOS Release 12.2
OL-1614-22
New and Changed Information
IP DSCP Marking for Frame-Relay PVC
The functionality of configuring a policy on a main or a subinterface to match and set IP type of service
(ToS) and differentiated services code point (DSCP) bits has existed in Cisco IOS Release 12.0S and
Cisco IOS Release 12.0(7)XE. This feature was introduced to Cisco IOS 12.1(2)T with the added
support of configuring a policy on an ATM PVC. This feature extends the support of Frame-Relay PVC
in Cisco IOS Release 12.1(5)T.
(ToS) and differentiated services code point (DSCP) bits has existed in Cisco IOS Release 12.0S and
Cisco IOS Release 12.0(7)XE. This feature was introduced to Cisco IOS 12.1(2)T with the added
support of configuring a policy on an ATM PVC. This feature extends the support of Frame-Relay PVC
in Cisco IOS Release 12.1(5)T.
IP over a CLNS Tunnel
The IP over a CLNS Tunnel feature lets you transport IP traffic over CLNS, for instance, on the data
communications channel (DCC) of a SONET ring.
communications channel (DCC) of a SONET ring.
The IP over CLNS Tunnel is a virtual interface that enhances interactions with CLNS networks, allowing
IP packets to be tunneled through the Connectionless Network Protocol (CLNP) to preserve TCP/IP
services.
IP packets to be tunneled through the Connectionless Network Protocol (CLNP) to preserve TCP/IP
services.
Configuring an IP over CLNS tunnel (CTunnel) allows you to Telnet to a remote router that has only
CLNS connectivity. Other management facilities can also be used, such as SNMP, TFTP, and so on,
which otherwise would not be available over a CLNS network. Refer to the following document for
further information:
CLNS connectivity. Other management facilities can also be used, such as SNMP, TFTP, and so on,
which otherwise would not be available over a CLNS network. Refer to the following document for
further information:
ISDN Network Side for ETSI Net5 PRI
The ISDN Network Side for ETSI Net5 PRI feature enables Cisco IOS to replicate the public switched
network interface to a PBX that is compatible with the ETSI Net5 switch type.
network interface to a PBX that is compatible with the ETSI Net5 switch type.
Routers and PBXs are both traditionally CPE with respect to the public switched network interfaces. For
Voice over IP (VoIP) applications, it is desirable to interface access servers to PBXs with the access
server representing the public switched network.
Voice over IP (VoIP) applications, it is desirable to interface access servers to PBXs with the access
server representing the public switched network.
Enterprise organizations use the current VoIP features with Cisco products as a method to reduce long
distance costs for phone calls within and outside of their organizations. However, there are times that a
call cannot go over VoIP and the call needs to be placed using the PSTN. The customer then must have
two devices connected to a PBX to allow some calls to be placed using VoIP and some calls to be placed
over the Public Switched Telephone Network (PSTN). In contrast, this feature allows Cisco access
servers to connect directly to user-side CPE devices such as PBXs and allows voice calls and data calls
to be placed without requiring two different devices to be connected to the PBXs.
distance costs for phone calls within and outside of their organizations. However, there are times that a
call cannot go over VoIP and the call needs to be placed using the PSTN. The customer then must have
two devices connected to a PBX to allow some calls to be placed using VoIP and some calls to be placed
over the Public Switched Telephone Network (PSTN). In contrast, this feature allows Cisco access
servers to connect directly to user-side CPE devices such as PBXs and allows voice calls and data calls
to be placed without requiring two different devices to be connected to the PBXs.
This feature enables the access server to provide a standard ISDN PRI network side interface to the PBXs
and to mimic the behavior of legacy phone switches. To a PBX, the access server functions as a Net5
PRI switch. No change in PBX capability or behavior is required. Refer to the following document for
further information:
and to mimic the behavior of legacy phone switches. To a PBX, the access server functions as a Net5
PRI switch. No change in PBX capability or behavior is required. Refer to the following document for
further information:
ISDN Progress Indicator Support for SIP using 183 Session Progress
This feature enhancement adds session initiation protocol (SIP) 183 Session Progress and Ringing
messages to better map to ISND/CAS messages.
messages to better map to ISND/CAS messages.