Cisco 2811 ROUTER 2FE 1NME 4HWIC 2PVDM 2AIM IP BASE WITH A/C POWER SUPPLY Specification Guide
© 2005 Cisco Systems, Inc. All rights reserved.
Important notices, privacy statements, and trademarks of Cisco Systems, Inc. can be found on cisco.com.
Page 7 of 20
IP Telephony Support-Features and Benefits
The Cisco 2800 Series allows network managers to provide scalable analog and digital telephony without investing in a one-time solution (refer to
Table 4 for more detail), allowing enterprises greater control of their converged telephony needs. Using the voice and fax modules, the Cisco 2800
Series can be deployed for applications ranging from voice-over-IP (VoIP) and voice-over-Frame Relay (VoFR) transport to robust, centralized
solutions using the Cisco Survivable Remote Site Telephony (SRST) solution or distributed call processing using Cisco Call Manager Express
(CME). The architecture is highly scalable with the ability to support up to 12 T1/E1s trunks, 52 foreign-exchange-station (FXS) ports, or 36
foreign-exchange-office (FXO) ports concurrent with data routing and other services.
Table 4.
IP Telephony Support-Features and Benefits
Feature
Benefit
IP Phone Support
•
Optional support for Cisco in-line power distribution to Ethernet switch network modules and HWICs
can be used to power Cisco IP phones.
can be used to power Cisco IP phones.
EVM Module Slots
•
Extension Voice Module Slots, available only on the Cisco 2821 and Cisco 2851, provide support for
the Cisco High-Density Analog and Digital Extension Module for Voice and Fax, providing support for
up to 24 total voice and fax sessions without consuming a Network Module Slot.
the Cisco High-Density Analog and Digital Extension Module for Voice and Fax, providing support for
up to 24 total voice and fax sessions without consuming a Network Module Slot.
PVDM (DSP) Slots on Motherboard
•
DSP (PVDM2) modules deliver support for analog and digital voice, conferencing, transcoding,
and secure Real-Time Transport Protocol (RTP) applications.
and secure Real-Time Transport Protocol (RTP) applications.
Integrated Call Processing
•
Cisco CME is an optional solution embedded in Cisco IOS Software that provides call processing
for Cisco IP phones. Cisco CME delivers telephony features similar to those that are commonly
used by business users to meet the requirements of the small to medium-sized offices.
for Cisco IP phones. Cisco CME delivers telephony features similar to those that are commonly
used by business users to meet the requirements of the small to medium-sized offices.
Integrated Voice Mail
•
Support for up to a 100 mailboxes using the Cisco Unity
®
Express voice messaging system is
possible with the integration of an optional voice-mail AIM or network module.
Broad Range of Voice Interfaces
•
Interfaces for local telephone, private branch exchange (PBX), and gateway connections include
FXS; FXO; direct inward dialing (DID); ear and mouth (E&M); Centralized Automated Message
Accounting (CAMA); ISDN Basic Rate Interface (BRI); and T1, E1, and J1 with ISDN Primary
Rate Interface (PRI); QSIG; and several additional channel-associated-signaling (CAS) signaling
schemes.
FXS; FXO; direct inward dialing (DID); ear and mouth (E&M); Centralized Automated Message
Accounting (CAMA); ISDN Basic Rate Interface (BRI); and T1, E1, and J1 with ISDN Primary
Rate Interface (PRI); QSIG; and several additional channel-associated-signaling (CAS) signaling
schemes.
Support of Survivable Remote Site
Telephony (SRST) Feature
Telephony (SRST) Feature
•
Branch offices can take advantage of centralized call control while cost-effectively providing local
branch backup using SRST redundancy for IP telephony.
branch backup using SRST redundancy for IP telephony.