Specifications

43
Release Notes for Cisco IOS Release 12.0 S
78-7130-11 Rev. B0
New and Changed Information
PA-MC-E3 Multichannel E3 Synchronous Serial Port Adapter
Platforms: Cisco 7200 series, Cisco 7500/RSP series
The PA-MC-E3 Multichannel E3 synchronous serial port adapter is available on Cisco 7200 series
routers, Cisco 7500 series routers, and Cisco 7000 series routers with the 7000 Series Route Switch
Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI). The PA-MC-E3 has one
channelized E3 high-speed serial interface that provides access to services at E1 (2.048 Mbps) data
rates, transferring data bidirectionally. This port adapter divides the E3 signal stream into 16 E1 lines
that can be further divided to the 64-kbps level, up to a total of 128 channels. The PA-MC-E3 complies
with Consultative Committee for International Telegraph and Telephone/International
Telecommunication Union (CCITT/ITU) G.703 physical layer standards and CCITT/ITU G.751 for E3,
G.742 for E2, and G.704 and G.706 for E1 fault and alarm detection and response actions. The E1 lines
can be configured as channelized, fractional, and unframed. PRI ISDN will be supported in a later
release. See the following document for further information:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios111/cc111/pamce3.htm
PA-MC-T3 Multichannel T3 Port Adapter
Platforms: Cisco 7200 series, Cisco 7500/RSP series
The PA-MC-T3 Multichannel T3 port adapter is available on Cisco 7200 series routers,
second-generation Versatile Interface Processor (VIP2) in Cisco 7500 series routers, and the Cisco 7000
series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis
Interface (RSP7000CI).
The PA-MC-T3 has one channelized T3 high-speed serial interface that provides access to services at
T1 data rates, transferring data bidirectionally.
This port adapter divides the T3 signal stream into 28 T1 lines that can be further divided into the
64 kbps level, up to a total of 128 channels. See the following document for further information:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios111/cc111/pamct3.htm
RFC 1483 Bridged PVC Encapsulation
Platforms: Cisco 12000 series
Using RFC 1483 bridged permanent virtual connection (PVC) encapsulation on a Cisco 12000 series
router, a Gigabit Switch Router (GSR) ATM interface can be connected directly to a Catalyst 5000
series switch ATM port. When configuring the GSR ATM interface, you must create a new 1483
half-bridge PVC connection using a multipoint subinterface. Only one PVC half-bridge connection per
subinterface is allowed; however, other non-PVC connections (SVC or nonbridged PVC) are allowed
on the subinterface. Configure an MTU size of 1500 so that the Catalyst switch will not drop packets.
Full bridging in the GSR is not supported. Also note that Ethernet format is supported. IEEE 802.3
format is not supported at this time.