Cisco Cisco IOS Software Release 12.2(15)ZL Notas de publicación

The following section lists the new hardware and software features supported by the Cisco ICS 7750, 
beginning with Cisco IOS software Release 12.2(15)ZL.

Cisco IOS Release 12.2(15)ZL on the Cisco ICS 7750 supports the following new interface cards:

Cisco IOS Release 12.2(15)ZL supports the two-port E&M VIC (VIC2-2E/M). You can use the 
VIC2-2E/M to connect to PBX or key system trunk lines.

Cisco IOS Release 12.2(15)ZL supports the four-port FXO voice interface card (VIC2-4FXO). You can 
use the VIC2-4FXO to connect to Private Branch Exchanges (PBXs) or key systems and to provide 
off-premises connections. 

The VIC2-4FXO is a universal FXO card that supports the following types of FXO interfaces:

FXO

FXO-M1—An FXO enhancement with battery reversal and Caller ID feature support for North 
America

FXO-M2—An FXO enhancement with battery reversal and Caller ID feature support for Europe

FXO-M3—An FXO enhancement with battery reversal feature support for Australia

You can use H.323 with the Caller ID and battery reversal answer supervision features on the 
VIC2-4FXO. For interfaces that are configured to use FXO-M1, Media Gateway Control 
Protocol (MGCP) on the VIC2-4FXO is supported, but not with Caller ID or battery reversal 
detection. 

Cisco IOS Release 12.2(15)ZL supports the two-port ISDN BRI VIC (VIC2-2BRI). You can use the 
VIC2-2BRI to connect to ISDN PBXs or key systems. The VIC2-2BRI supports the following 
functionality:

S/T—Terminal Equipment (TE). Connects to an ISDN WAN through an external NT1 device.

NT/TE—Network Termination (NT) or TE. Connects to a central office (CO) switch or PBX that 
provides Network Termination.