Cisco 1861 Series User manual

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 1 of 20
Data Sheet
Cisco 1861 and Cisco 2800, 3800, 2900, 3900,
and 3900E Series Integrated Services Router
Interoperability with Cisco Unified Communications
Manager
Cisco®1861 and Cisco 2800, 3800, 2900, 3900, and 3900E Series Integrated
Services Routers can be deployed as unified communications routers as part of the
Cisco Unified Communications and Collaboration Solution. New and existing
deployments can benefit by using any of these routers as unified communications
gateways with Cisco Unified Communications Manager.
Cisco 1861 and Cisco 2800, 3800, 2900, 3900, and 3900E Series unified communications routers communicate
directly with Cisco Unified Communications Manager, allowing for the deployment of unified communications
solutions that are ideal for small and medium-sized businesses, large enterprises, and service providers that offer
managed network services. The Cisco 1861 and Cisco 2800, 3800, 2900, 3900, and 3900E Series Routers provide
a highly flexible and scalable solution for small and medium-sized branch and regional offices.
The Cisco 1861 and Cisco 2800, 3800, 2900, 3900, and 3900E Series unified communications routers support a
wide range of packet telephony-based voice interfaces and signaling protocols within the industry, providing
connectivity support for more than 90 percent of the world’s private branch exchanges (PBXs) and public-switched-
telephone-network (PSTN) connection points. Signaling support includes T1/E1 Primary Rate Interface (PRI), T1
channel associated signaling (CAS), E1-R2, T1/E1 QSIG protocol, T1 Feature Group D (FGD), Basic Rate
Interface (BRI), foreign exchange office (FXO), ear and mouth (E&M), and foreign exchange station (FXS). You
can configure these unified communications routers to support from 2 to 720 voice channels. Additionally, you can
use these unified communications routers to terminate Session Initiation Protocol (SIP) trunking into the enterprise
or branch office by enabling the Cisco Unified Border Element features. Additional details are available in the Cisco
Unified Border Element data sheet.
As your enterprise seeks to deploy an expanding list of unified communications applications and services, Cisco
1861 and Cisco 2800, 3800, 2900, 3900, and 3900E Series unified communications routers - interoperating with
Cisco Unified Communications Manager - can provide a solution that will grow with your changing needs.
Interoperability Using SIP, H.323, or MGCP
The unified communications routers can communicate with the Cisco Unified Communications Manager using
Session Initiation Protocol (SIP), H.323, or Media Gateway Control Protocol (MGCP):
●In SIP and H.323 mode, the unified communications routers communicate with Cisco Unified
Communications Manager as intelligent gateway devices.
●In MGCP mode, these routers operate as stateless clients, giving Cisco Unified Communications Manager
full control. Dial plans are configured centrally in Cisco Unified Communications Manager. Then you can
automatically configure voice-gateway routers by downloading XML files.

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 2 of 20
IP Telephony Phased Migration
The Cisco 1861 and Cisco 2800, 3800, 2900, 3900, and 3900E Series unified communications routers can help
you immediately deploy an end-to-end unified communications network architecture or gradually shift voice traffic
from traditional circuit-switched networks to a single infrastructure carrying data, voice, and video over packet
networks.
Initially, you can use these unified communications routers to interconnect older PBXs over the packet
infrastructure and still maintain PSTN (off-net) connectivity through your circuit-switched PBXs. Later, you can
migrate PSTN (off-net) connectivity to the unified communications routers and start to incorporate IP phones at
larger sites (Figure 1). After all sites are running IP telephony, you can begin deploying IP-based applications such
as IP unified messaging, personal assistants, and extension mobility.
The unified communications routers are an ideal solution for circuit-switched PBX and PSTN access within a Cisco
Unified Communications Manager-based IP telephony architecture.
Figure 1. IP Telephony Phased Migration: Migrate Circuit-Switched PSTN and PBX Connectivity to Unified Communications
As companies seek to deploy unified communications solutions across the entire enterprise - converging voice,
video, and data across potentially thousands of sites - they require a solution that offers simple administration,
virtually unlimited scalability, and high availability. The unified communications routers work in concert with the
Cisco Unified Communications Manager, deployed in either a distributed or centralized call-processing model, to
provide the unified communications solutions that enterprises require.

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 3 of 20
Centralized Call Processing
Demand for technology to help increase employee productivity and reduce costs is at an all-time high. At the same
time, many organizations are struggling to deploy new applications and services because of unavailable capital
budgets. The centralized call-processing model can provide technology to users who require it, while
simultaneously providing ease of centralized management and maintenance of applications to network
administrators.
Instead of deploying and managing key systems or PBXs in small offices, applications are centrally located at a
corporate headquarters or data center, and accessed through the IP LAN and WAN. This deployment model allows
branch-office users to access the full enterprise suite of communications and productivity applications for the first
time, while lowering total cost of ownership (TCO). There is no need to “touch” each branch office each time a
software upgrade or new application is deployed, accelerating the speed in which organizations can adopt and
deploy new technology solutions.
The ability to quickly roll out new applications to remote users can provide a sustainable competitive advantage
versus having to visit each of many branch-office sites to take advantage of new applications. An architecture in
which a Cisco Unified Communications Manager and other Cisco IP Communications applications are located at
the central site offers the following benefits:
●Centralized configuration and management
●Access at every site to all Cisco Unified Communications Manager features, next-generation contact
centers, unified messaging services, personal productivity tools, mobility solutions, and software-based
phones all the time
●IT staff not required at each remote site
●Ability to rapidly deploy applications to remote users
●Easy upgrades and maintenance
●Lower TCO
Survivable Remote Site Telephony
As enterprises extend their IP telephony deployments from central sites to remote offices, an important
consideration is the ability to cost-effectively provide failover capability at remote branch offices. However, the size
and number of these small-office sites preclude most enterprises from deploying dedicated call-processing servers,
unified messaging servers, or multiple WAN links to each site to achieve the required high availability.
Cisco Unified Communications Manager with Survivable Remote Site Telephony (SRST) allows companies to
extend high-availability IP telephony to their remote branch offices with a cost-effective solution that is easy to
deploy, administer, and maintain. The SRST capability is embedded in the Cisco IOS®Software that runs on the
Cisco 1861 and Cisco 2800, 3800, 2900, 3900, and 3900E Series unified communications routers.
SRST software automatically detects a connectivity failure between Cisco Unified Communications Manager and
IP phones at the branch office. Using the Cisco Simple Network Automated Provisioning capability, SRST initiates
a process to automatically configure the unified communications routers to provide call-processing backup
redundancy for the IP phones and PSTN access in the affected office. The router provides essential call-
processing services for the duration of the failure, helping ensure that critical phone capabilities are operational.

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 4 of 20
Upon restoration of the connectivity to the Cisco Unified Communications Manager, the system automatically shifts
call-processing functions back to the primary Cisco Unified Communications Manager cluster. Configuration for this
capability is performed only once in the Cisco Unified Communications Manager at the central site (Figure 2).
Figure 2. Centralized Cisco Unified Communications Manager Deployment with SRST
Cisco Unified Communications Router Features and Benefits
Simple Administration
●Provides centralized administration and management
●Enables administration of large dial plans
●Provides a single point of configuration for a Cisco IP Telephony network
Availability
●Provides for Cisco Unified Communications Manager redundancy; if a primary host Cisco Unified
Communications Manager fails, call control fails over to the next available Cisco Unified Communications
Manager server
●Offers branch-office survivability using SRST when connection to the Cisco Unified Communications
Manager cluster is lost

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 5 of 20
Scalability
●Meets enterprise office requirements of small offices to large corporations
●Scales up to 30,000 users per cluster with Cisco Unified Communications Manager clustering
Investment Protection
●Provides a modular platform design with a growing list of more than 90 interface combinations
●Allows you to increase voice capacity while taking advantage of your existing investments in Cisco Unified
Communications routers
Unified Communications Router with Cisco Unified Communications Manager Feature
Summary
Table 1 summarizes the features of the unified communications routers with Cisco Unified Communications
Manager.
Table 1. Cisco Unified Communications Routers with Cisco Unified Communications Manager Feature Summary
SIP
MGCP
H.323
Feature
Benefits
Y
Y1
Y
Analog FXS interfaces loop-start and ground-start
signaling
This signaling facilitates direct connection to phones, fax
machines, and key systems.
Y
N
Y
Analog E&M (wink, immediate, and delay) interfaces
These interfaces make direct connection to a PBX
possible.
Y
Y
Y
Analog FXO interfaces loop-start and ground-start
signaling
This feature facilitates connection to a PBX or key system
and provides off-premises connections to or from the
PSTN. Calling line ID (CLID) is available in MGCP mode.2
Y
N
Y
Analog direct inward dialing (DID)
Analog DID enables connection to the PSTN with DID
operation.
Y
N
Y
Analog Centralized Automated Message Accounting
(CAMA)
Analog CAMA facilitates analog PSTN connection for E-
911 support.
Y
Y
Y
BRI Q.931 user side (NET3)
This feature enables connection to PSTN.
Y
N
Y
BRI Q.931 network side (NET3)
This feature enables connection to a PBX.
Y
Y
Y
BRI Q.SIG-basic call (including calling number)
This feature facilitates connection to a PBX or key
system.
Y
N
N3
BRI Q.SIG forward, transfer, and conference
These services enable connection to a PBX or key
system.
N
Y4
N
T1 E&M hookflash
This feature is used to transfer a call from time-division
multiplexing (TDM) interactive voice response (IVR) to a
PSTN or IP phone destination.
Y
Y
Y
T1-CAS E&M (wink-start and immediate-start) interfaces
These interfaces facilitate connection to a PBX, key
system, or PSTN.
Y
N
Y
T1-CAS E&M (delay dial) interfaces
These interfaces facilitate connection to a PBX, key
system, or PSTN.
Y
N
Y
T1-CAS feature group D5
This feature is used to connect to a PBX or PSTN.
Y
N
Y
T1-CAS FXO (ground-start and loop-start) interfaces
These interfaces are used to connect to a PBX or key
system and to provide off-premises connections.
Y
N
Y
T1-CAS FXS (ground-start and loop-start) interfaces
These interfaces are used to connect to a PBX or key
system.
Y
N
Y
E1 CAS
E1 CAS enables connection to a PBX or PSTN.
1Supports loop-start signaling only
2Requires Cisco IOS Software Release 12.4(20)T or later and Cisco Unified Communications Manager 8.0 or later
3Supported between gateways in the absence of Cisco Unified Communications Manager
4Requires Cisco IOS Software Release 12.4(4)T or later and Cisco Unified Communications Manager 4.2 or later
5Not supported on the Cisco 1700 Series unified communications routers

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 6 of 20
SIP
MGCP
H.323
Feature
Benefits
Y
N
Y
E1 MelCAS
E1 MelCAS facilitates connection to a PBX or PSTN.
Y
N
Y
E1 R2 (more than 30 country variants)
E1 R2 enables connection to a PBX or PSTN.
Y
Y
Y
T1/E1 ISDN PRI Q.931 interfaces
These interfaces are used to connect to a PBX or key
system and to provide off-premises connections to or
from the PSTN or post, telephone, and telegraph (PTT).
Y
Y
Y
T1/E1 Q.SIG basic call (including calling number)
This feature is used to connect to a PBX.
Y6
Y
N3
T1/E1 Q.SIG, including call diversion and forward,
transfer, calling and connected ID services, and
message-waiting indicator
This feature is used to connect to a PBX.
Y
Y
Y
Out-of-band dual-tone multifrequency (DTMF)
This feature carries DTMF tones and information out of
band for clearer transmission and detection.
N
Y
N
Single point of gateway configuration for a Cisco IP
Telephony network
This feature centralizes and automates the configuration
process for MGCP unified communications routers by
making them configurable on the Cisco Unified
Communications Manager. Configuration information is
automatically downloaded at startup and after any
configuration change.
Y
Y
Y
Cisco Unified Communications Manager failover
redundancy
When the unified communications router loses contact
with the primary Cisco Unified Communications Manager,
the gateway uses the next available Cisco Unified
Communications Manager.
Y
Y
Y7
Cisco Unified Communications Manager call preservation
during failover
Existing calls are preserved during a failover to the next
available Cisco Unified Communications Manager. Calls
are also preserved upon restoration of the primary host
Cisco Unified Communications Manager.
Y
Y
Y
SRST and gateway fallback
When contact with the Cisco Unified Communications
Manager cluster is lost, SRST provides basic call
handling for the IP phones. Gateway fallback provides
support for PSTN telephony interfaces on the branch-
office router for the duration of the loss.
Y
N
Y7
Call preservation for existing BRI and PRI calls during
gateway fallback and recovery
Existing calls are preserved during a loss of connection to
the Cisco Unified Communications Manager cluster and
gateway fallback. Calls are also preserved upon
restoration of the Cisco Unified Communications
Manager connection.
Y
Y
Y7
Call preservation for existing T1/E1 (CAS) and analog
calls during gateway fallback and recovery
Existing calls are preserved during a loss of connection to
the Cisco Unified Communications Manager cluster and
gateway fallback. Calls are also preserved upon
restoration of the Cisco Unified Communications
Manager connection.
Y
Y
Y
Multicast music on hold (MoH) - centralized
This feature helps the unified communications router
deliver music streams from a MoH server to users on on-
and off-net calls.
N
Y
N
Multicast MoH - distributed
This feature helps the unified communications router
deliver music streams to users through the router-
embedded MoH server to on- and off-net calls.
N
Y
Y
Tone on hold
Tone indicates when a user is placed on hold.
N
Y
N
Tone-on-hold timer tuning
Tone on hold is generated locally in the gateway for play
to the PSTN. Tone-on-hold timer tuning allows the use of
service parameter settings in Cisco Unified
Communications Manager for specification of the time
between beeps.
6Support is for forward, transfer, and conference; message-waiting indicator is from SIP to QSIG (not the reverse) and requires
Cisco IOS Software Release 12.4(11)T; calling and connected ID are not supported
7Requires Cisco Unified Communications Manager 4.1(3)SR2 or later and Cisco IOS Software Release 12.4(9)T or later; no
gatekeeper support

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 7 of 20
SIP
MGCP
H.323
Feature
Benefits
Y
Y
Y
Caller ID support8
This feature helps the unified communications router
send the caller ID of a caller for display:
In MGCP mode, to and from IP phone, FXS, T1/E1 PRI;
and FXO to IP phone, not conversely (caller ID currently
not supported on T1-CAS).
In SIP and H.323 mode, to and from IP phone, FXS, BRI,
T1/E1 PRI; and from FXO to IP phone, FXS, BRI, and
T1/E1 PRI, not conversely.
N
Y
Y
Malicious caller ID (MCID) over PRI
MCID over PRI facilitates malicious call notification to on-
net personnel, flags the on-net call detail record (CDR),
and notifies the off-net (PSTN) system (through the
network interface) of the malicious nature of the call.
N
Y
N
Multilevel precedence and preemption (MLPP) for T1-PRI
(backhaul) and T1-CAS (wink start only)
This feature helps assure high-ranking personnel
communication to critical organizations and personnel
during network stress situations. It allows priority calls for
validated users to preempt lower-priority calls.
Y
Y
Y
Group III fax support
Group III fax support facilitates transmit of Group III faxes
between the PSTN and IP using either fax relay or fax
pass-through methods.
Y
Y9
Y
T.38 standards-based fax support
This feature enables transmit T.38 fax between the PSTN
and IP.
Y
N
Y
Private-line automatic ringdown (PLAR)
PLAR provides a dedicated connection to another
extension or an attendant.
Y
Y
Y
Standards-based codecs10
You can choose to transmit voice across your network as
either uncompressed pulse code modulation (PCM) or
compressed from 5.3 to 64 kbps using standards-based
compression algorithms (G.711, G.729, G.729a/b, G.722,
Internet Low Bitrate Codec [iLBC], G.723.1, G.726, or
G.728).
Y
Y
Y
Voice activity detection (VAD)
VAD conserves bandwidth during a call when there is no
active voice traffic to send.
Y
Y
Y
Comfort-noise generation
While using VAD, the digital signal processor (DSP) at
the destination end emulates background noise from the
source side, preventing the perception that a call is
disconnected.
Y
N
Y
Busy out
When the WAN or LAN connection to the router is down
or network conditions are such that a call cannot be
admitted, this feature will “busy out”the trunk to the PBX
or PSTN.
-
-
Y
H.323 ITU Version 1, 2, 3, and 4 support
These versions of H.323 use industry-standard signaling
protocols for setting up calls between gateways,
gatekeepers, and H.323 endpoints.
Y
-
-
SIP IETF RFC 3261 support
This feature uses industry-standard signaling protocols
for setting up calls between gateways and SIP proxies or
SIP Back-to-Back User Agents.
Y
Y
Y
Authentication, authorization, and accounting (AAA)
AAA supports debit card and credit card (prepaid and
postpaid calling card) applications.
Y
N
Y
IVR support
IVR offers Automated-Attendant support, voicemail
support, or call routing based on service desired.
Y
N
Y
Automated Attendant
This feature uses IVR to provide automated call-
answering and -forwarding services.
Y
N
Y
VoiceXML
VoiceXML controls calls “in queue”at the gateway for
call-center applications. Calls are redirected only when an
agent becomes available.
N
Y
Y7
Overlap sending over voice over IP (VoIP)
This feature speeds variable-length dial strings dialing.
8Requires Cisco IOS Software Release 12.4(20)T or later
9Requires Cisco Unified Communications Manager 4.2(3)
10 G.722 is not supported with MGCP. G.722 requires Cisco IOS Software Release 12.4(20)T or later with Cisco Unified
Communications Manager 5.0 or later. iLBC requires Cisco IOS Software Release 12.4(15)T or later with Cisco Unified
Communications Manager 6.0 or later

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 8 of 20
SIP
MGCP
H.323
Feature
Benefits
Y
N
Y
Voice + Data integrated access
This feature makes the voice and serial data interfaces
available on the same T1/E1.
Y
N
Y
Fractional PRI
This feature allows for use of fewer than 23/30 channels
on a T1/E1. Other channels are either unused or used for
data.
Y
N
Y
FXO tone answer supervision
This feature facilitates the use of tones to signal
answering a call and the start of a CDR.
Y
Y
Y
FXO disconnect supervision
This feature makes battery reversal or tones available for
use to disconnect FXO calls.
Y
N
Y
ISDN video switching on gateway (drop DSPs)
This feature allows ISDN-based videoconferencing
systems to connect and be switched back out the ISDN.
Y
N
Y
Set numbering plan type of outgoing calls
You can change the numbering plan on the gateway
before your call goes out over the PSTN.
N
Y
N
Billing granularity to DS-0 channel level on Cisco Unified
Communications Manager CDR
This feature provides increased granularity on TDM
usage down to the individual channel.
Y
Y
Y
Name display on PRI using FACILITY IE (caller name
[CNAM])
This feature provides caller name display on IP phones
for PSTN calls.
N
Y11
N
Secure Telephone Unit (STU) and Secure Terminal
Equipment (STE) phone support
STU and STE support the U.S. Department of Defense
analog and BRI secure phones.
N
Y12
N
Connection to Defense Switched Network (DSN)
This feature supports the U.S. Department of Defense
private TDM network.
Y13
Y14
Y15
Secure Real-Time Transport Protocol (SRTP): Media
authentication and encryption on unified communications
routers
This feature enables secure gateway-to-gateway calls
and secure IP phone-to-gateway calls.
Y
-
-
SRTP-Real-Time Transport Protocol (RTP) fallback
operations
This feature enables the fallback from SRTP to RTP
during capabilities negotiation at the time of call setup.
Y16
Y17
Y18
Signaling encryption SIP: Transport Layer Security (TLS),
MGCP/H,323: IP Security IPsec)
This feature encrypts signaling communication between
unified communications and Cisco Unified
Communications Manager.
Y
N
Y
H.320 video gateway support
This feature integrates ISDN trunks with both voice and
video traffic.
Y
N
Y
Virtualization (Virtual Route Forwarding [VRF])
This feature supports virtual segmentation of the network
using VRF.
Y
N
N
IPv6
IPv6 support enables interworking with IPv6-capable
networks.
Y
N
N
Dynamic Host Configuration Protocol (DHCP)
DHCP enables acquisition of gateway configuration
parameters from the DHCP server.
Y
Y
Y
Resource Reservation Protocol (RSVP) support
This feature helps assure high-quality voice by enabling
resource reservation for call admission control.
Y
-
-
History Info support
This feature enables support for the History Info header
to transport the history information of a call.
Y
-
-
SIP privacy and identity
This feature enables transport of identity, both preferred
(P-Preferred Identity [PPI]) and asserted (P-Asserted
Identity [PAI]).
Y
-
-
Signaling health monitoring
This feature enables monitoring of the signaling
connection across the signaling trunk.
11 Requires Cisco IOS Software Release 12.3(14)T or later; BRI operations limited: single B-channel voice only; testing limited to
three phones; no data call support
12 Requires Cisco IOS Software Release 12.4(2)T or later
13 Requires Cisco IOS Software Release 12.4(15)T or later and Cisco Unified Communications Manager 5.0 (line-side) or later;
Cisco Unified Communications Manager trunk-side support currently not available
14 Requires Cisco IOS Software Release 12.4(3) or later and Cisco Unified Communications Manager 4.1 or later
15 Requires Cisco IOS Software Release 12.4(6)T2 or later and Cisco Unified Communications Manager 5.0 or later
16 Requires Cisco IOS Software Release 12.4(6)T or later and Cisco Unified Communications Manager 5.0 or later
17 Requires Cisco IOS Software Release 12.4(3) or later and Cisco Unified Communications Manager 4.1 or later
18 Requires Cisco IOS Software Release 12.4(6)T1 and Cisco Unified Communications Manager 5.0 or later

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 9 of 20
SIP
MGCP
H.323
Feature
Benefits
Y
Y
Y
Q.SIG and Q.931 Tunneling
This feature enables transparent tunneling of ISDN
signaling over VoIP signaling.
Y19
N
Y19
Ad hoc videoconference service and unified video
transcoding service on Cisco Integrated Services Routers
Generation 2 (ISR G2)
This feature enables ad hoc videoconferencing and
unified video transcoding on the Cisco 2900 and 3900
Series Integrated Services Routers (ISRs)
N
Y19
N
Cisco V.150.1 Minimum Essential Requirements
This feature delivers enhancements to the voice
gateways to satisfy requirements outlined in the
UCR2008 specification. Specifically, support is added for
the V.150.1 Minimum Essential Requirements (modem
relay) and Modem over IP (MoIP) and Fax over IP (FoIP).
Unified Communications Router with Cisco Unified Communications Manager Minimum
System Requirements
Tables 2 through 5 give system requirements for the unified communications routers.
Table 2. Cisco Unified Communications Routers with Cisco Unified Communications Manager Minimum System
Requirements Using SIP
TDM Protocol or Feature
Minimum Cisco IOS Software Release*
Minimum Cisco Unified Communications
Manager Release
Analog (FXS and FXO)
12.4(6)T
5.0
BRI
12.4(6)T
5.0
T1 CAS and T1/E1 PRI
12.4(6)T
5.0
* This table shows when a Cisco IOS Software particular interface type was first tested with Cisco Unified Communications
Manager. It does not document when individual network modules (NMs), advanced integration modules (AIMs), service modules
(SMs), integrated service modules (ISMs), and platforms are first supported in Cisco IOS Software. For this information refer to
the data sheet for the relevant interface. Note that when using SIP, Cisco Unified Communications Manager does not need to
know which NM, SM, AIM, ISM, or platform is used. Hence, when Cisco Unified Communications Manager supports a particular
protocol or feature, this support is sufficient for operation.
Table 3. Cisco Unified Communications Routers with Cisco Unified Communications Manager Minimum System
Requirements Using H.323
TDM Protocol or Feature
Minimum Cisco IOS Software Release*
Minimum Cisco Unified Communications
Manager Release
Analog (FXS and FXO)
12.2(1)M
3.0(5a)
BRI
12.2(1)M
3.0(5a)
T1 CAS and T1/E1 PRI
12.1(2)T
3.0(5a)
T1/E1 QSIG
12.1(2)T
3.0(5a)
MCID
12.3(11)T
4.0
* This table shows when a particular interface type is first supported in Cisco IOS Software. It does not document when individual
NMs, SMs, AIMs, ISMs, and platforms are first supported in Cisco IOS Software. For this information refer to the data sheet for
the relevant interface. Note that in H.323 mode, Cisco Unified Communications Manager does not need to know which NM, SM,
AIM, ISM, or platform is used. Hence, when Cisco Unified Communications Manager supports a particular protocol or feature, this
support is sufficient for operation.
19 Requires Cisco IOS Software Release 15.1(4)M or later and Cisco Unified Communications Manager 8.6 or later

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 10 of 20
Table 4. Cisco Unified Communications Routers with Cisco Unified Communications Manager Minimum System
Requirements Using MGCP
Active Platforms
Interface Part Number
TDM Protocol or Feature
Minimum Cisco IOS
Software Release
Minimum Cisco Unified
Communications
Manager Release
Cisco 2801
VIC2-2FXS, VIC2-2FXO,
VIC-4FXS/DID, and VIC2-
4FXO
Analog FXS and FXO
12.3.8T4
3.3.5, 4.0.2a SR1, or 4.1.2
SR1
VIC2-2BRI -NT/TE
BRI
12.3.14T
4.1.2 SR1
VWIC-1MFT-T1/E1, VWIC-
2MFT-T1/E1, VWIC-2MFT-
T1/E1-DI, VWIC-1MFT-
G703, and VWIC-2MFT-
G703
T1 CAS E&M, T1/E1 PRI,
and QSIG (basic)
12.3.8T4
3.3.5, 4.0.2a SR1, or 4.1.2
SR1
VWIC-1MFT-T1/E1, VWIC-
2MFT-T1/E1, VWIC-2MFT-
T1/E1-DI, VWIC-1MFT-
G703, and VWIC-2MFT-
G703
T1/E1QSIG supplementary
services
12.3.14T
4.0.2a SR1 or 4.1.2 SR1
VWIC2-1MFT-T1/E1,
VWIC2-2MFT-T1/E1,
VWIC2-1MFT-G703, and
VWIC2-2MFT-G703
T1 CAS E&M, T1/E1 PRI,
and QSIG supplementary
services
12.3.14T
4.0.2a SR1 or 4.1.2 SR1
VIC3-2FXS/DID, VIC3-
2FXS-E/DID, VIC3-
4FXS/DID
Analog FXS and FXO
12.4.20T
6.0.1
Cisco 2811, 2821,
and 2851
EVM-HD-8FXS/DID with
EM-HDA-8FXS, EM3-HDA-
8FXS, EM-HDA-6FXO, or
EM-HDA-3FXS/4FXO
Analog FXS and FXO
12.3.11T
3.3.5, 4.0.2a SR1, or 4.1.2
EVM-HD-8FXS/DID with
EM-4BRI-NT/TE
BRI
12.4.2T
4.1.3 SR1
NM-HDA
Analog FXS and FXO
12.3.8T4
3.3.5, 4.0.2a SR1, or 4.1.2
NM-HDV
T1 CAS E&M and T1/E1
PRI
12.3.8T4
3.3.5, 4.0.2a SR1, or 4.1.2
NM-HDV
T1/E1 QSIG (basic)
12.3.8T4
3.3.5, 4.0.2a SR1, or 4.1.2
NM-HD-1V/2V/2VE
Analog FXS and FXO, T1
CAS E&M, T1/E1 PRI, and
T1/E1 QSIG (basic)
12.3.8T4
3.3.5, 4.0.2a SR1, or 4.1.2
VIC2-2BRI-NT/TE, NM-
HD-1V/2V/2VE, and NM-
HDV2
BRI
12.4.2T
4.1.3 SR1
NM-HDV2
T1 CAS E&M, T1/E1 PRI,
and T1/E1 QSIG (basic)
12.3.8T4
3.3.5, 4.0.2a SR1, or 4.1.2
VWIC-1MFT-T1/E1, VWIC-
2MFT-T1/E1, VWIC-2MFT-
T1/E1-DI, VWIC-1MFT-
G703, and VWIC-2MFT-
G703
T1/E1QSIG** and MLPP***
12.3.11T
4.0.2a SR1 or 4.1.2
VWIC2-1MFT-T1/E1,
VWIC2-2MFT-T1/E1,
VWIC2-1MFT-G703, and
VWIC2-2MFT-G703
T1 CAS E&M, T1/E1 PRI,
QSIG**, and MLPP***
12.3.14T
4.0.2a SR2 or 4.1.3
VIC3-2FXS/DID, VIC3-
2FXS-E/DID, VIC3-
4FXS/DID
Analog FXS and FXO
12.4.20T
6.0.1

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 11 of 20
Active Platforms
Interface Part Number
TDM Protocol or Feature
Minimum Cisco IOS
Software Release
Minimum Cisco Unified
Communications
Manager Release
Cisco 3825 and 3845
EVM-HD-8FXS/DID with
EM-HDA-8FXS, EM3-HDA-
8FXS, EM-HDA-6FXO, or
EM-HDA-3FXS/4FXO
Analog FXS and FXO
12.3.11T
3.3.5, 4.0.2a SR1, or 4.1.2
EVM-HD-8FXS/DID with
EM-4BRI-NT/TE
BRI
12.4.2T
4.1.3 SR1
NM-HDA
Analog FXS and FXO
12.3.11T
3.3.5, 4.0.2a SR1, or 4.1.2
NM-HDV
T1 CAS E&M and T1/E1
PRI
12.3.11T
3.3.5, 4.0.2a SR1, or 4.1.2
NM-HDV
T1/E1 QSIG (basic)
12.3.11T
3.3.5, 4.0.2a SR1, or 4.1.2
NM-HD-1V/2V/2VE
Analog FXS and FXO, T1
CAS E&M, T1/E1 PRI, and
T1/E1 QSIG (basic)
12.3.11T
3.3.5, 4.0.2a SR1, or 4.1.2
VIC2-2BRI-NT/TE, NM-
HD-1V/2V/2VE, and NM-
HDV2
BRI
12.4.2T
4.1.3 SR1
NM-HDV2
T1 CAS E&M, T1/E1 PRI,
and T1/E1 QSIG (basic)
12.3.11T
3.3.5, 4.0.2a SR1, or 4.1.2
VWIC-1MFT-T1/E1, VWIC-
2MFT-T1/E1, VWIC-2MFT-
T1/E1-DI, VWIC-1MFT-
G703, and VWIC-2MFT-
G703
T1/E1QSIG** and MLPP***
12.3.11T
4.0.2a SR1 or 4.1.2
VWIC2-1MFT-T1/E1,
VWIC2-2MFT-T1/E1,
VWIC2-1MFT-G703, and
VWIC2-2MFT-G703
T1 CAS E&M, T1/E1 PRI,
QSIG**, and MLPP***
12.3.14T
4.0.2a SR2 or 4.1.3
VIC3-2FXS/DID, VIC3-
2FXS-E/DID, and VIC3-
4FXS/DID
Analog FXS and FXO
12.4(20)T
6.0.1
Cisco 2901, 2911, 2921,
and 2951
EVM-HD-8FXS/DID with
EM3-HDA-8FXS, EM-HDA-
6FXO, or EM-HDA-
3FXS/4FXO (Cisco 2911,
2921, and 2951 only)
Analog FXS and FXO
15.0.1M
6.1.5, 7.1.3, or 8.0
VIC3-2FXS/DID, VIC3-
2FXS-E/DID, VIC3-
4FXS/DID, NM-HD-
1V/2V/2VE, and NM-HDV2
Analog FXS and FXO
15.0.1M
6.1.5, 7.1.3, or 8.0
EVM-HD-8FXS/DID with
EM-4BRI-NT/TE, VIC2-
2BRI-NT/TE, NM-HD-
1V/2V/2VE, and NM-HDV2
BRI
15.0.1M
6.1.5, 7.1.3 or 8.0
NM-HDV2
T1 CAS E&M, T1/E1 PRI,
and T1/E1 QSIG (basic)
15.0.1M
6.1.5, 7.1.3 or 8.0
VWIC2-1MFT-T1/E1,
VWIC2-2MFT-T1/E1,
VWIC2-1MFT-G703, and
VWIC2-2MFT-G703
T1 CAS E&M, T1/E1 PRI,
QSIG**, and MLPP***
15.0.1M
6.1.5, 7.1.3 or 8.0
VWIC3-1MFT-T1/E1,
VWIC3-2MFT-T1/E1,
VWIC3-1MFT-G703, and
VWIC3-2MFT-G703
T1 CAS, T1/E1 PRI,
QSIG**, MLPP*** and
channel groups
15.0.1M3
7.1.5 or 8.0.2
VWIC3-4MFT-T1/E1
Not supported on Cisco
2901
T1 CAS, T1/E1 PRI,
QSIG**, MLPP*** and
channel groups
15.1.3T
7.1.5 or 8.0.2

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 12 of 20
Active Platforms
Interface Part Number
TDM Protocol or Feature
Minimum Cisco IOS
Software Release
Minimum Cisco Unified
Communications
Manager Release
Cisco 3925 and 3945
EVM-HD-8FXS/DID with
EM3-HDA-8FXS, EM-HDA-
6FXO, or EM-HDA-
3FXS/4FXO
Analog FXS and FXO
15.0.1M
6.1.5, 7.1.3, or 8.0
VIC3-2FXS/DID, VIC3-
2FXS-E/DID, VIC3-
4FXS/DID, NM-HD-
1V/2V/2VE, and NM-HDV2
Analog FXS and FXO
15.0.1M
6.1.5, 7.1.3, or 8.0
EVM-HD-8FXS/DID with
EM-4BRI-NT/TE, VIC2-
2BRI-NT/TE, NM-HD-
1V/2V/2VE, and NM-HDV2
BRI
15.0.1M
6.1.5, 7.1.3, or 8.0
NM-HDV2
T1 CAS E&M, T1/E1 PRI,
and T1/E1 QSIG (basic)
15.0.1M
6.1.5, 7.1.3, or 8.0
VWIC2-1MFT-T1/E1,
VWIC2-2MFT-T1/E1,
VWIC2-1MFT-G703, and
VWIC2-2MFT-G703
T1 CAS E&M, T1/E1 PRI,
QSIG**, and MLPP***
15.0.1M
6.1.5, 7.1.3, or 8.0
VWIC3-1MFT-T1/E1,
VWIC3-2MFT-T1/E1,
VWIC3-1MFT-G703, and
VWIC3-2MFT-G703
T1 CAS, T1/E1 PRI,
QSIG**, MLPP*** and
channel-groups
15.0.1M3
7.1.5 or 8.0.2
VWIC3-4MFT-T1/E1
T1 CAS, T1/E1 PRI,
QSIG**, MLPP*** and
channel groups
15.1.3T
7.1.5 or 8.0.2
Cisco 3925E and 3945E
EVM-HD-8FXS/DID with
EM3-HDA-8FXS, EM-HDA-
6FXO, or EM-HDA-
3FXS/4FXO
Analog FXS and FXO
15.1.1T
7.1.5 or 8.0.2
VIC3-2FXS/DID, VIC3-
2FXS-E/DID, VIC3-
4FXS/DID, NM-HD-
1V/2V/2VE, and NM-HDV2
Analog FXS and FXO
15.1.1T
7.1.5 or 8.0.2
EVM-HD-8FXS/DID with
EM-4BRI-NT/TE, VIC2-
2BRI-NT/TE, NM-HD-
1V/2V/2VE, and NM-HDV2
BRI
15.1.1T
7.1.5 or 8.0.2
NM-HDV2
T1 CAS E&M, T1/E1 PRI,
and T1/E1 QSIG (basic)
15.1.1T
7.1.5 or 8.0.2
VWIC2-1MFT-T1/E1,
VWIC2-2MFT-T1/E1,
VWIC2-1MFT-G703, and
VWIC2-2MFT-G703
T1 CAS E&M, T1/E1 PRI,
QSIG**, and MLPP***
15.1.1T
7.1.5 or 8.0.2
VWIC3-1MFT-T1/E1,
VWIC3-2MFT-T1/E1,
VWIC3-1MFT-G703, and
VWIC3-2MFT-G703
T1 CAS, T1/E1 PRI,
QSIG**, MLPP*** and
channel-groups
15.0.1M3
7.1.5 or 8.0.2
VWIC3-4MFT-T1/E1
T1 CAS, T1/E1 PRI,
QSIG**, MLPP*** and
channel-groups
15.1.3T
7.1.5 or 8.0.2
** QSIG supplementary requires Cisco Unified Communications Manager 4.0 or later. QSIG basic services were first introduced
with Cisco Communications Manager 3.3 and Cisco IOS Software Release 12.2.11T.
*** MLPP requires Cisco Unified Communications Manager 4.0.2 or later.

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 13 of 20
Table 5. Cisco Unified Communications Routers with Cisco Unified Communications Manager Minimum System
Requirements for Conferencing, Transcoding, and Media Termination Point
Active Platforms
Interface Part Numbers
TDM Protocol or Feature
Minimum Cisco IOS
Software Release
Minimum Cisco Unified
Communications
Manager Release
Cisco 2801
Onboard PVDM2 DSPs
Conferencing, transcoding,
and media termination
point (MTP)
12.3.11T
4.0.2a SR1 or 4.1.2 SR1
Cisco 2811, 2821, and
2851
Onboard PVDM2 DSPs
Conferencing and
transcoding
12.3.8T4
3.3.5, 4.0.2a SR1, or 4.1.2
Onboard PVDM2 DSPs
MTP
12.3.8T4
4.0.2a SR1 or 4.1.2
Onboard PVDM2 DSPs
RFC 2833 MTP
12.3.11T
4.0.2a SR1 or 4.1.2
NM-HD-1V/2V/2VE and
NM-HDV2
Conferencing and
transcoding
12.3.8T4
3.3.5, 4.0.2a SR1, or 4.1.2
NM-HD-1V/2V/2VE and
NM-HDV2
MTP
12.3.8T4
4.0.2a SR1 or 4.1.2
NM-HD-1V/2V/2VE and
NM-HDV2
RFC 2833 MTP
12.3.11T
4.0.2a SR1 or 4.1.2
NM-HDV and NM-HDV-
FARM
Conferencing and
transcoding
12.3.8T4
3.3.5, 4.0.2a SR1, or 4.1.2
Cisco 2901, 2911, 2921,
and 2951
Onboard PVDM2 and
PVDM3 DSPs
Conferencing and
transcoding
15.0.1M
6.1.5, 7.1.3 or 8.0
Onboard PVDM2 and
PVDM3 DSPs
MTP and RFC 2833
15.0.1M
6.1.5, 7.1.3 or 8.0
NM-HD-1V/2V/2VE and
NM-HDV2
Conferencing and
transcoding
15.0.1M
6.1.5, 7.1.3 or 8.0
NM-HD-1V/2V/2VE and
NM-HDV2
MTP and RFC 2833
15.0.1M
6.1.5, 7.1.3 or 8.0
Cisco 3825 and 3845
Onboard PVDM2 DSPs
Conferencing and
transcoding
12.3.11T
3.3.5, 4.0.2a SR1, or 4.1.2
Onboard PVDM2 DSPs
MTP and RFC 2833
12.3.11T
4.0.2a SR1 or 4.1.2
NM-HD-1V/2V/2VE and
NM-HDV2
Conferencing and
transcoding
12.3.11T
3.3.5, 4.0.2a SR1, or 4.1.2
NM-HD-1V/2V/2VE and
NM-HDV2
MTP and RFC 2833
12.3.11T
4.0.2a SR1 or 4.1.2
NM-HDV and NM-HDV-
FARM
Conferencing and
transcoding
12.3.8T4
3.3.5, 4.0.2a SR1, or 4.1.2
Cisco 3925 and 3945
Onboard PVDM2 and
PVDM3 DSPs
Conferencing and
transcoding
15.0.1M
6.1.5, 7.1.3, or 8.0
Onboard PVDM2 and
PVDM3 DSPs
MTP and RFC 2833
15.0.1M
6.1.5, 7.1.3, or 8.0
NM-HD-1V/2V/2VE and
NM-HDV2
Conferencing and
transcoding
15.0.1M
6.1.5, 7.1.3, or 8.0
NM-HD-1V/2V/2VE and
NM-HDV2
MTP and RFC 2833
15.0.1M
6.1.5, 7.1.3, or 8.0
Cisco 3925E and 3945E
Onboard PVDM2 and
PVDM3 DSPs
Conferencing and
transcoding
15.1.1T
7.1.5 or 8.0.2
Onboard PVDM2 and
PVDM3 DSPs
MTP and RFC 2833
15.1.1T
7.1.5 or 8.0.2
NM-HD-1V/2V/2VE and
NM-HDV2
Conferencing and
transcoding
15.1.1T
7.1.5 or 8.0.2
NM-HD-1V/2V/2VE and
NM-HDV2
MTP and RFC 2833
15.1.1T
7.1.5 or 8.0.2

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 14 of 20
Voice Performance
Tables 6 and 7 give information about connectivity and CPU performance, respectively, on the unified
communications routers.
Table 6. Maximum Physical DS-0 Connectivity on the Cisco Unified Communications Routers*
Cisco
1861
Cisco
2801
Cisco
2811
Cisco
2821
Cisco
2851
Cisco
3825
Cisco
3845
Cisco
2901
Cisco
2911
Cisco
2921
Cisco
2951
Cisco
3925
Cisco
3945
Cisco
3925E
Cisco
3945E
FXS
4
16
28
52
52
52
88
16
40
40
64
64
112
60
108
FXO and
CAMA
4
16
24
36
36
36
56
16
28
28
40
40
64
36
60
E&M
-
8
12
12
12
16
24
8
12
12
16
16
24
14
22
Analog
DID
-
8
24
32
32
32
48
16
32
32
48
48
80
44
76
BRI ports
2
8
12
20
20
20
32
8
16
16
24
24
40
22
38
T1/E1
ports
-
1
12
12
12
16
24
8
20
20
24
24
32
20
28
T1
channels
-
24
288
288
288
384
576
192
480
480
576
576
768
480
672
E1
channels
-
30
360
360
360
480
720
240
600
600
720
720
960
600
840
* This table contains physical connectivity numbers. You should also use CPU performance as a guide to determine how many
voice calls can actually be supported on each platform.
Table 7. CPU Performance on the Cisco Unified Communications Routers*
Cisco
2801
Cisco
2811
Cisco
2821
Cisco
2851
Cisco
3825
Cisco
3845
Cisco
2901
Cisco
2911
Cisco
2921
Cisco
2951
Cisco
3925
Cisco
3945
Cisco
3925E
Cisco
3945E
VoIP Performance: Maximum Number of Simultaneous Calls (not exceeding 75-percent platform CPU usage)
Cisco Unified Border Element
55
110
200
225
400
500
100
200
400
600
800
950
2100
2500
Standalone Unified Communications Router20
No
encryption
32
70
112
170
340
450
100
150
240
400
720
960
600
840
SIP TLS
with SRTP
32
65
104
160
320
420
100
150
240
400
720
880
600
840
H.323
Signaling
in IPsec
with SRTP
32
60
96
140
290
370
100
150
240
400
720
780
600
840
H.323
Signaling
and media
in IPsec
32
34
52
80
150
185
100
150
195
325
360
385
600
840
WAN Edge Gateway21
No
encryption
32
48
80
140
270
320
100
150
240
400
610
650
600
840
SIP TLS
with SRTP
32
45
75
130
250
300
100
150
240
400
600
645
600
840
20 Gigabit Ethernet or Fast Ethernet egress; no quality-of-service (QoS) features; voice traffic only
21 T1/E1 or High-Speed Serial Interface (HSSI) serial egress; some QoS features; voice and small amount of data traffic

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 15 of 20
Cisco
2801
Cisco
2811
Cisco
2821
Cisco
2851
Cisco
3825
Cisco
3845
Cisco
2901
Cisco
2911
Cisco
2921
Cisco
2951
Cisco
3925
Cisco
3945
Cisco
3925E
Cisco
3945E
H.323
Signaling
in IPsec
with SRTP
32
41
80
124
220
270
100
150
240
400
530
565
600
840
H.323
Signaling
and media
in IPsec
22
22
44
60
110
135
100
125
145
235
265
285
600
840
WAN Edge Gateway with Compressed Real-Time Protocol (CRTP)22
No
encryption
26
35
61
120
225
270
100
150
240
400
510
550
600
840
SIP TLS
with SRTP
26
32
56
112
210
255
100
150
240
400
500
540
600
840
H.323
Signaling
in IPsec
with SRTP
22
31
51
100
185
225
100
150
240
400
445
475
600
840
H.323
Signaling
and media
in IPsec
14
17
28
50
93
113
95
105
120
200
220
240
600
840
VoIP Performance: Maximum Number of Calls per Second (not exceeding 75-percent CPU)
0.5
0.7
0.8
1
3
7
1
1.5
2
3
10
15
30
35
Notes:
1. All results represent G.729A or G.711 (20-ms packetization) switched H.323 calls with VAD turned off.
2. The call success rate (CSR) of all tests is 98 to 100 percent.
3. Call duration of tests is 180 seconds except for calls-per-second rate testing, where the duration is shorter.
The test release is Cisco IOS Software Release 15.0.1M. This document contains general numbers as a guide to
the approximate performance of the unified communications routers. The numbers are extrapolated from a large
number of disparate tests, test conditions, and traffic patterns. Several nontesting factors have also been
accounted for. Therefore, actual test results will vary, and we encourage you to do proof-of-concept testing for
more specific performance numbers for a specific scenario, traffic pattern, or release.
End-of-Sale Platforms
Tables 8 and 9 provide system requirements for the end-of-sale unified communications routers.
Table 8. Cisco Unified Communications Routers with Cisco Unified Communications Manager Minimum System
Requirements Using MGCP
Active Platforms
Interface Part Number
TDM Protocol or
Feature
Minimum Cisco IOS
Software Release
Minimum Cisco
Unified
Communications
Manager Release
Cisco 1751 and 1760
VIC2-2FXS, VIC2-2FXO, and VIC2-
4FXO
Analog FXS and FXO
12.3(5) or 12.3(4)T
3.3.5, 4.0.2a SR1, or
4.1.2 SR1
VIC-4FXS/DID
Analog FXS
12.3(2)T
3.3.5, 4.0.2a SR1, or
4.1.2 SR1
VIC2-2BRI -NT/TE
BRI
12.3(5) or 12.3(4)T
4.1.2 SR1
VWIC-1MFT-T1/E1, VWIC-2MFT-
T1/E1, VWIC-2MFT-T1/E1-DI, VWIC-
1MFT-G703, and VWIC-2MFT-G703
T1 CAS E&M, T1/E1
PRI, and QSIG (basic)
12.2(15)T
3.3.2, 3.3.5, 4.0, 4.0.2a
SR1, or 4.1.2 SR1
22 T1/E1 or HSSI serial egress; some QoS features; CRTP; voice and small amount of data traffic

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 16 of 20
Active Platforms
Interface Part Number
TDM Protocol or
Feature
Minimum Cisco IOS
Software Release
Minimum Cisco
Unified
Communications
Manager Release
VWIC-1MFT-T1/E1, VWIC-2MFT-
T1/E1, VWIC-2MFT-T1/E1-DI, VWIC-
1MFT-G703, and VWIC-2MFT-G703
T1/E1QSIG
supplementary services
12.3(14)T
4.0.2a SR1 or 4.1.2 SR1
VWIC2-1MFT-T1/E1, VWIC2-2MFT-
T1/E1, VWIC2-1MFT-G703, and
VWIC2-2MFT-G703
T1 CAS E&M, T1/E1
PRI, and QSIG
supplementary services
12.3(14)T
4.0.2a SR1 or 4.1.2 SR1
Cisco 2600XM
NM-1V/2V
Analog FXS and FXO
12.2.8T
3.0(8)
NM-1V/2V
BRI
12.3.11T
4.1
NM-HDA
Analog FXS and FXO
12.2.8T
3.2(2c)spA
NM-HDV
T1 CAS E&M and T1/E1
PRI
12.2.11T
3.1
NM-HDV
T1/E1 QSIG (basic)
12.2.11T
3.3
AIM-VOICE-30 and AIM-ATM-VOICE-
30
T1 CAS E&M, T1/E1
PRI, and T1/E1 QSIG
(basic)
12.2.11T
3.3(3) SR2
NM-HD-1V/2V/2VE
Analog FXS and FXO,
T1 CAS E&M, T1/E1
PRI, and T1/E1 QSIG
(basic)
12.3.4T
3.3(3) SR2
NM-HD-1V/2V/2VE and NM-HDV2
BRI
12.4.2T
4.1.3 SR1
NM-HDV2
T1 CAS E&M, T1/E1
PRI, and T1/E1 QSIG
(basic)
12.3.7T
3.3.4, 4.0.1 SR1
VWIC-1MFT-T1/E1, VWIC-2MFT-
T1/E1, VWIC-2MFT-T1/E1-DI, VWIC-
1MFT-G703, and VWIC-2MFT-G703
T1 CAS E&M and T1/E1
PRI
12.2.11T
3.1
VWIC-1MFT-T1/E1, VWIC-2MFT-
T1/E1, VWIC-2MFT-T1/E1-DI, VWIC-
1MFT-G703, and VWIC-2MFT-G703
T1/E1QSIG**
12.3.11T
4.0
VWIC-1MFT-T1/E1, VWIC-2MFT-
T1/E1, VWIC-2MFT-T1/E1-DI, VWIC-
1MFT-G703, and VWIC-2MFT-G703
MLPP
12.3.11T
4.0.2
VWIC2-1MFT-T1/E1, VWIC2-2MFT-
T1/E1, VWIC2-1MFT-G703, and
VWIC2-2MFT-G703
T1 CAS E&M, T1/E1
PRI, QSIG**, and
MLPP***
12.3.14T
4.0.2a SR2 or 4.1.3
Cisco 2691
NM-1V/2V
Analog FXS and FXO
12.2.8T
3.2(2c)spA
NM-1V/2V
BRI
12.3.11T
4.1
NM-HDA
Analog FXS and FXO
12.2.8T
3.2(2c)spA
NM-HDV
T1 CAS E&M and T1/E1
PRI
12.2.11T
3.2(2c)spA
NM-HDV
T1/E1 QSIG (basic)
12.2.11T
3.3
AIM-VOICE-30 and AIM-ATM-VOICE-
30
T1 CAS E&M, T1/E1
PRI, and T1/E1 QSIG
(basic)
12.2.11T
3.3(3) SR2
NM-HD-1V/2V/2VE
Analog FXS and FXO,
T1 CAS E&M, T1/E1
PRI, and T1/E1 QSIG
(basic)
12.3.4T
3.3(3) SR2
NM-HD-1V/2V/2VE and NM-HDV2
BRI
12.4.2T
4.1.3 SR1
NM-HDV2
T1 CAS E&M, T1/E1
PRI, and T1/E1 QSIG
(basic)
12.3.7T
3.3.4, 4.0.1 SR1
VWIC-1MFT-T1/E1, VWIC-2MFT-
T1/E1, VWIC-2MFT-T1/E1-DI, VWIC-
1MFT-G703, and VWIC-2MFT-G703
T1 CAS E&M and T1/E1
PRI
12.2.11T
3.1

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 17 of 20
Active Platforms
Interface Part Number
TDM Protocol or
Feature
Minimum Cisco IOS
Software Release
Minimum Cisco
Unified
Communications
Manager Release
VWIC-1MFT-T1/E1, VWIC-2MFT-
T1/E1, VWIC-2MFT-T1/E1-DI, VWIC-
1MFT-G703, and VWIC-2MFT-G703
T1/E1QSIG**
12.3.11T
4.0
VWIC-1MFT-T1/E1, VWIC-2MFT-
T1/E1, VWIC-2MFT-T1/E1-DI, VWIC-
1MFT-G703, and VWIC-2MFT-G703
MLPP
12.3.11T
4.0.2
VWIC2-1MFT-T1/E1, VWIC2-2MFT-
T1/E1, VWIC2-1MFT-G703, and
VWIC2-2MFT-G703
T1 CAS E&M, T1/E1
PRI, QSIG**, and
MLPP***
12.3.14T
4.0.2a SR2 or 4.1.3
VWIC-1MFT-T1/E1, VWIC-2MFT-
T1/E1, VWIC-2MFT-T1/E1-DI, VWIC-
1MFT-G703, and VWIC-2MFT-G703
T1/E1QSIG** and
MLPP***
12.3.11T
4.0.2a SR1 or 4.1.2
VWIC2-1MFT-T1/E1, VWIC2-2MFT-
T1/E1, VWIC2-1MFT-G703, and
VWIC2-2MFT-G703
T1 CAS E&M, T1/E1
PRI, QSIG**, and
MLPP***
12.3.14T
4.0.2a SR2 or 4.1.3
VIC3-2FXS/DID, VIC3-2FXS-E/DID,
and VIC3-4FXS/DID
Analog FXS and FXO
12.4.20T
7.0
Cisco 3725 and 3745
NM-1V/2V
Analog FXS and FXO
12.2.8T
3.2(2c)spA
NM-1V/2V
BRI
12.3.11T
4.1
NM-HDA
Analog FXS and FXO
12.2.8T
3.2(2c)spA
NM-HDV
T1 CAS E&M and T1/E1
PRI
12.2.11T
3.2(2c)spA
NM-HDV
T1/E1 QSIG (basic)
12.2.11T
3.3
AIM-VOICE-30 and AIM-ATM-VOICE-
30
T1 CAS E&M, T1/E1
PRI, and T1/E1 QSIG
(basic)
12.2.11T
3.3(3) SR2
NM-HD-1V/2V/2VE
Analog FXS and FXO,
T1 CAS E&M, T1/E1
PRI, and T1/E1 QSIG
12.3.4T
3.3(3) SR2
NM-HD-1V/2V/2VE and NM-HDV2
BRI
12.4.2T
4.1.3 SR1
NM-HDV2
T1 CAS E&M, T1/E1
PRI, and T1/E1 QSIG
(basic)
12.3.7T
3.3.4 or 4.0.1 SR1
VWIC-1MFT-T1/E1, VWIC-2MFT-
T1/E1, VWIC-2MFT-T1/E1-DI, VWIC-
1MFT-G703, and VWIC-2MFT-G703
T1 CAS E&M and T1/E1
PRI
12.2.11T
3.1
VWIC-1MFT-T1/E1, VWIC-2MFT-
T1/E1, VWIC-2MFT-T1/E1-DI, VWIC-
1MFT-G703, and VWIC-2MFT-G703
T1/E1QSIG**
12.3.11T
4.0
VWIC-1MFT-T1/E1, VWIC-2MFT-
T1/E1, VWIC-2MFT-T1/E1-DI, VWIC-
1MFT-G703, and VWIC-2MFT-G703
MLPP
12.3.11T
4.0.2
VWIC2-1MFT-T1/E1, VWIC2-2MFT-
T1/E1, VWIC2-1MFT-G703, and
VWIC2-2MFT-G703
T1 CAS E&M, T1/E1
PRI, QSIG**, and
MLPP***
12.3.14T
4.0.2a SR2 or 4.1.3

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 18 of 20
Table 9. Cisco Unified Communications Routers with Cisco Unified Communications Manager Minimum System
Requirements for Conferencing, Transcoding, and Media Termination Point
Active Platforms
Interface Part Numbers
TDM Protocol or
Feature
Minimum Cisco IOS
Software Release
Minimum Cisco
Unified
Communications
Manager Release
Cisco 1751 and 1760
Onboard PVDM-256K DSPs
Conferencing and
transcoding
12.3.8T
3.3.5, 4.0.2a SR1, or
4.1.2 SR1
Cisco 2600XM
NM-HDV and NM-HDV-FARM
Conferencing and
transcoding
12.2.13T
3.2(2c)
NM-HD-1V/2V/2VE and NM-HDV2
MTP
12.3.8T
4.0.1
NM-HD-1V/2V/2VE and NM-HDV2
Conferencing and
transcoding
12.3.8T
3.3.4 or 4.0.1
NM-HD-1V/2V/2VE and NM-HDV2
RFC 2833 MTP
12.3.11T
4.0
Cisco 2691
NM-HDV and NM-HDV-FARM
Conferencing and
transcoding
12.2.13T
3.2(2c)
NM-HD-1V/2V/2VE and NM-HDV2
Conferencing and
transcoding
12.3.8T
3.3.4 or 4.0.1
NM-HD-1V/2V/2VE and NM-HDV2
MTP
12.3.8T
4.0.1
NM-HD-1V/2V/2VE and NM-HDV2
RFC 2833 MTP
12.3.11T
4.0
Cisco 3725 and 3745
NM-HD-1V/2V/2VE and NM-HDV2
Conferencing and
transcoding
12.3.8T4
3.3.5, 4.0.2a SR1, or
4.1.2
NM-HD-1V/2V/2VE and NM-HDV2
Conferencing and
transcoding
12.3.8T
3.3.4 or 4.0.1
NM-HD-1V/2V/2VE and NM-HDV2
MTP
12.3.8T
4.0.1
NM-HDV and NM-HDV-FARM
RFC 2833 MTP
12.3.11T
4.0
Tables 10 and 11 provide information about connectivity and CPU performance, respectively, on the end-of-sale
unified communications routers.
Table 10. Maximum Physical DS-0 Connectivity on the Cisco Unified Communications Routers*
Cisco 1751 and
1760
Cisco 2610
XM
Cisco 2620
XM
Cisco 2650
XM
Cisco 2691
Cisco 3725
Cisco 3745
FXS
Cisco 1751: 12
Cisco 1760: 16
12
12
12
12
24
48
FXO and CAMA
Cisco 1751: 12
Cisco 1760: 16
8
8
8
8
16
32
E&M
Cisco 1751: 6
Cisco 1760: 8
4
4
4
4
8
16
Analog DID
Cisco 1751: 6
Cisco 1760: 8
8
8
8
8
16
32
BRI ports
Cisco 1751: 6
Cisco 1760: 8
4
4
4
4
8
16
T1/E1 ports
1
5
5
5
6
10
18
T1 channels
24
120
120
120
144
240
432
E1 channels
30
150
150
150
180
300
540

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 19 of 20
Table 11. CPU Performance on the Cisco Unified Communications Routers*
Cisco 1751
and 1760
Cisco 2610
XM
Cisco 2620
XM
Cisco 2650
XM
Cisco 2691
Cisco 3725
Cisco 3745
VoIP Performance: Maximum Number of Simultaneous Calls (not exceeding 75-percent platform CPU usage)
Standalone Unified Communications Router23
No encryption
32
32
38
50
130
180
290
SRTP with signaling in
IPsec
-
24
30
40
106
155
250
SRTP with signaling
and media in IPsec
-
12
16
22
60
85
135
WAN Edge Gateway24
No encryption
32
18
20
35
100
140
220
SRTP with signaling in
IPsec
-
14
16
29
82
120
190
SRTP with signaling
and media in IPsec
-
8
9
16
47
65
102
WAN Edge Gateway with Compressed Real-Time Protocol (CRTP)25
No encryption
24
12
16
24
82
102
170
SRTP with signaling in
IPsec
-
10
14
20
69
90
140
SRTP with signaling
and media in IPsec
-
5
7
10
39
48
77
VoIP Performance: Maximum Number of Calls per Second (not exceeding 75-percent CPU)
0.1
0.1
0.25
0.5
2
1.5
4
Notes:
1. All results represent G.729A or G.711 (20-ms packetization) switched H.323 calls with VAD turned off.
2. The call success rate (CSR) of all tests is 98 to 100 percent.
3. Call duration of tests is 180 seconds except for calls-per-second rate testing, where the duration is shorter.
The test release is Cisco IOS Software Release 12.4M. This document contains general numbers as a guide to the
approximate performance of the unified communications routers. The numbers are extrapolated from a large
number of disparate tests, test conditions, and traffic patterns. Several nontesting factors have also been
accounted for. Therefore, actual test results will vary, and we encourage you to do proof-of-concept testing for
more specific performance numbers for a specific scenario, traffic pattern, or release.
23 Gigabit Ethernet or Fast Ethernet egress; no QoS features; voice traffic only
24 T1/E1 or High-Speed Serial Interface (HSSI) serial egress; some QoS features; voice and small amount of data traffic
25 T1/E1 or HSSI serial egress; some QoS features; CRTP; voice and small amount of data traffic

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 20 of 20
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