1-13
z SIC-4FSW/1FEA/1GEC/1ADSL/1ADSL-I can be installed only in slot 2 or slot 4.
z SIC-2BS/2BU/2BSV can be installed only in slot 1 or slot 3.
For the MSR 30-20/40/60, SIC/DSIC cards are subject to the following limitations:
z SIC-4FSW/1FEA/1GEC/1ADSL/1ADSL-I can be installed only in slot 2 or slot 4.
MIM/DMIM Cards
MSR 30 series routers adopt modular design and support a wide range of optional MIM/DMIM cards
that provide various interfaces, such as synchronous/asynchronous serial interface, Ethernet interface,
E1/T1 interface, ISDN BRI/PRI interface, ADSL interface, audio interface, and Layer 2 switching
interface.
MIM cards, DMIM cards, mainly differ in the following aspects:
A MIM card occupies one ordinary MIM slot, a DMIM card occupies two ordinary (horizontal) MIM slots,
You need to remove the slide rails from the router before installing a DMIM card.
ESM
z High-performance network data encryption ESM module (ESM-ANDE)
z Standard network data encryption ESM module (ESM-SNDE)
ESM module supports IPSec and by using hardware encryption expedites IP packet encryption. The
use of hardware encryption/decryption and hashing operation allows the router to encrypt packets with
high performance and reliability.
The encryption card is optional. On a router installed with an encryption card, the main control board
functions to route IP packets and implement encryption-enabled VPN, while the encryption card
functions to encrypt packets.
Table 1-15 Encryption card attributes
Attribute Description
Protocol
IP sec
Hardware encryption algorithm
Key algorithms: DES, 3DES, AES
Authentication algorithms: HMAC-MD5-96, HMAC-SHA-1-96
VPM/VCPM
Voice processing module (VPM) functions to implement the encryption/decryption, EC and CNG of
voices.
Voice co-processing module (VCPM) processes the voice data in combination with VPM.
z Voice co-processing module (RT-VCPM)
z 8-channel voice processing module (RT-VPM8)
z 16-channel voice processing module (RT-VPM16)
z 24-channel voice processing module (RT-VPM24)
z 32-channel voice processing module (RT-VPM32)