Cisco 2911 Configuration Guide

179
Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Chapter Unified Communications on Cisco Integrated Services Routers
Applications and Application Interfaces (APIs)
Signaling and Media Authentication and Encryption
The Media and Signaling Authentication and Encryption Feature for Cisco IOS MGCP Gateways feature
provides support for Cisco Secure Survivable Remote Site Telephony (SRST) and voice security features
that include authentication, integrity, and encryption of voice media and related call control signaling.
See Media and Signaling Authentication and Encryption Feature on Cisco IOS MGCP Gateways at
Cisco.com for configuration information,
http://www.cisco.com/en/US/docs/ios/12_3t/12_3t11/feature/guide/gtsecure.html.
The Media and Signaling Encryption (SRTP/TLS) on DSP Farm Conferencing feature provides secure
conferencing capability for Cisco Unified Communications Manager (Unified CM) networks, including
authentication, integrity and encryption of voice media and related call control signaling to and from the
digital signal processor (DSP) farm.
See Media and Signaling Encryption (SRTP/TLS) on DSP Conferencing Farm at Cisco.com for
configuration information, http://www.cisco.com/en/US/docs/ios/12_4t/12_4t15/itsdsp.html.
See SIP: SIP Support for SRTP at Cisco.com for configuration information,
http://www.cisco.com/en/US/docs/ios/12_4t/12_4t15/srtpstub.html#wp1008975.
Virtual Route Forward
Virtual Route Forward (VRF) is the technique to create multiple virtual networks within a single network
entity. In a single network component, we can create multiple VRFs to create the isolation among each
other. In our regular deployment of Unified Communication, we create different VLANs for voice and
data to separate traffics. This is Layer-2 virtualization. In conjunction with VAN support, Cisco UC also
supports Layer-3 virtualization through VRF for both voice and data.
In a typical UC deployment, hard phones are typically in Voice Segments and PCs are in Data Segments.
PCs are inherently un-trusted devices in the network. Mechanisms based on’s rely on port numbers and
there is no way to ensure only ‘trusted’ media enters UC Segment. VRF implementations in ISR can
create single voice network and multiple data networks, which consolidate voice communication into
one logically partitioned network to separate voice and data communication on a converged multi-media
network.
To configure Virtual Route Forward features, see Virtual Route Forwarding Design Guide at:
http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/vrf/design/guide/vrfDesignGuide.html.
Applications and Application Interfaces (APIs)
The Cisco 3900 series and Cisco 2900 series ISRs support the following applications and application
interfaces:
• Cisco Unity Express, page 180
• Voice XML, page 180
• Hoot-n-Holler, page 181
• Hoot-n-Holler, page 181
• Cisco Application Extension Platform, page 181
• APIs, page 181

Cisco 2911 Specifications

General

Ethernet LAN	Yes
Cabling technology	10/100/1000Base-T(X)
Networking standards	IEEE 802.1Q, IEEE 802.1ag, IEEE 802.3, IEEE 802.3ab, IEEE 802.3af, IEEE 802.3ah, IEEE 802.3u
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet interface type	Gigabit Ethernet
DHCP client	-
Routing protocols	BGP, EIGRP, OSPF
Supported protocols	IPv4, IPv6, IS-IS, IGMPv3, PIM SM, SSM, DVMRP, IPSec, GRE, BVD, MPLS, L2TPv3, PPP, MLPPP, MLFR, HDLC, RS-232, RS-449, X.21, V.35, EIA-530, PPPoE, ATM
USB version	2.0
RS-232 ports	1
Expansion slots	4 x EHWIC 2 x DSP 1 x ISM
USB ports quantity	2
Ethernet LAN (RJ-45) ports	3
Firewall security	Cisco IOS
Input current	2.2 A
AC input voltage	100 - 240 V
Power source type	AC
AC input frequency	47 - 63 Hz
Power consumption (typical)	50 W
Product color	Black
Rack capacity	2U
Operating altitude	0 - 4000 m
Non-operating altitude	0 - 4570 m
Storage temperature (T-T)	-40 - 80 °C
Operating temperature (T-T)	0 - 40 °C
Storage relative humidity (H-H)	5 - 95 %
Operating relative humidity (H-H)	5 - 85 %
Safety	UL 60950-1, CAN/CSA C22.2 No. 60950-1, EN 60950-1, AS/NZS 60950-1, IEC 60950-1
Electromagnetic compatibility	47 CFR, ICES-003, EN55022, CISPR22, AS/NZS 3548, VCCI V-3, EN 300-386, EN 61000, EN 55024, CISPR 24EN50082-1

Weight and Dimensions

Depth	304.8 mm
Width	438.2 mm
Height	88.9 mm
Weight	8200 g