Cisco Systems 870 Router User Manual


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18-port Digital Modem
Network Module
Contains 18 congurable
V90-compliant digital
modems for use with the
ISDN PRI and BRI Network
Modules This module
is eld upgradable to a
maximum of 30 digital
modems

Dial-up Remote Access
3800 Series–123(11)T Requires a channelized
or ISDN WAN Network
Module: NM-1CE1T1-PRI,
NM-2CE1T1-PRI,
NM-4B-S/T, NM-4B-U,
NM-8B-S/T, or NM-8B-U







Six-port Digital Modem
Network Module
Contains six congurable
V90-compliant digital
modems for use with the
ISDN PRI and BRI Network
Modules This module
is eld upgradable to a
maximum of 30 digital
modems

Dial-up Remote Access
3800 Series–123(11)T Requires a channelized
or ISDN WAN Network
Module: NM-1CE1T1-PRI,
NM-2CE1T1-PRI,
NM-4B-S/T, NM-4B-U,
NM-8B-S/T, or NM-8B-U
Cisco Dial-up/Remote Access
Network Modules


12-port Digital Modem
Network Module
Contains 12 congurable
V90-compliant digital
modems for use with the
ISDN PRI and BRI Network
Modules This module
is eld upgradable to a
maximum of 30 digital
modems

Dial-up Remote Access
3800 Series–123(11)T Requires a channelized
or ISDN WAN Network
Module: NM-1CE1T1-PRI,
NM-2CE1T1-PRI,
NM-4B-S/T, NM-4B-U,
NM-8B-S/T, or NM-8B-U
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