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Cisco MWR 1900 Mobile Wireless Routers

Cisco MWR 1941-DC-A Mobile Wireless Edge Router

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Q&A
Q. What is the Cisco MWR 1941-DC-A Mobile Wireless Edge Router?
A. The Cisco MWR 1941-DC-A cell-site access platform specifically designed to optimize, aggregate, and transport GSM and UMTS backhaul. It allows mobile wireless operators to lower existing backhaul expenses, more cost-efficiently deploy new radio technologies such as Universal Mobile Telecommunications Service High-Speed Downlink Packet Access (UMTS/HSDPA) voice and data networks, generate revenue from new cell-site IP-based services, and enable rapid deployment of next-generation mobile services.
Q. Is the Cisco MWR 1941-DC-A available?
A. The Cisco MWR 1941-DC-A is currently available. Please be sure to order the "-A" version for GSM and UMTS backhaul and optimization.
Q. Which Cisco IOS Software release is required?
A. The minimum version required is Cisco IOS ® Software Release 12.4(2)MR.
Q. Which Cisco IOS Software feature set(s) are required?
A. The only current Cisco IOS Software feature set that is supported is RAN OPTIMIZATION.
Q. How many voice/WAN interface cards (VWICs) are supported? Which VWICs are supported?
A. The Cisco MWR 1941-DC-A supports three VWICs with the onboard controller and another two VWICs with the NM-2W in the network module slot. A total of five VWICs are supported in the fully configured Cisco MWR 1941-DC-A Mobile Wireless Edge Router. The only current VWIC supported is the Cisco 2-Port T1/E1 Protection Switching RAN VWIC (Cisco T1/E1 RAN VWIC).
Q. How many network modules are supported? Which network modules are supported?
A. Only one network module is supported in the Cisco MWR 1941-DC-A. Currently, the only network module supported is the NW-2W.
Q. What are the operating environment thresholds for the Cisco MWR 1941-DC-A?
A. Table 1 shows the thresholds.

Table 1. Environmental Thresholds

Description

Specification

Dimensions (H x D x W)

1.72 x 12.5 x 17.5 in (4.37 x 31.75 x 44.45 cm)

Weight (without NMs or WICs)

10.5 lbs (4.77 kg)

Operating Temperature

-10 to 55°C (14 to 131°F)

Nonoperating Temperature

-40 to 85°C (-40 to 185°F)

Heat Dissipation

70W maximum, 238 BTUs/hour

Relative Humidity

5 to 90 percent noncondensing, ±5 percent

Operation Altitude

1600 m/5248 ft, 3000 m/9840 ft (max 45°C ambient)

Noise Level

59 dB

Airflow

32 cfm

DC-Input Power

70W (maximum)

DC-Input Voltage Rating

20 to 60 VDC, 27 VDC or -48 VDC nominal, 60 VDC maximum

DC-Input Current Rating

4A (maximum)

Power Connector

Phoenix 1754452 (P1=+Power, P2=Ground, P3=-Power), mates with Phoenix 1754465 cable connector

Power Dissipation

70W (maximum)

Rack Mounting

19 in. (48.26 cm)

Q. What type of redundancy is supported by the Cisco MWR 1941-DC-A?
A. The Cisco MWR 1941-DC-A supports 1:1 redundancy when deployed with a second Cisco MWR 1941-DC-A.
Deployed as a pair, the Cisco MWR 1941-DC-A mobile wireless routers provide a 1:1 redundancy solution for a cell-site router. The redundancy is a platform-specific feature for the Cisco MWR 1941-DC-A, taking advantage of Hot Standby Router Protocol (HSRP) and custom health check software that interfaces with HSRP. The T1/E1 RAN VWIC has solid state relays and supports a custom E1/T1 Y cable to enable each router pair to redundantly connect to local cell-site gear (BTS and/or NodeB) as well to T1/E1 leased lines.
Q. What is the difference between the MWR 1941-DC and the MWR 1941-DC-A?
A. The Cisco MWR-1941-DC- provides Abis Optimization as part of Motorola's CDMA 1xRTT IP RAN whereas the MWR-1941-DC-A provides aggregation and optimization of both GSM and UMTS traffic and is RAN Vendor agnostic. In addition, there are platform differences which are summarized below:
Table 2 lists additional differences.

Table 2. Cisco MWR 1941-DC vs. MWR 1941-DC-A

MWR-1941-DC

MWR-1941-DC-A

MIPS RISC Processor, Cisco PXF Network Processing Engine

MIPS RISC processor

Compact Flash: 32 MB and 64 MB Options

Compact flash: 128 MB

System RAM: 128 MB (SDRAM Default)

System RAM: 256 MB (SDRAM default)

No Advanced Integration Module (AIM) Connector

AIM connector

Q. What advanced integration modules (AIMs) are supported on the Cisco MWR 1941-DC-A?
A. The Cisco MWR 1941-DC-A only supports the ATM AIM.
Q. What is an AIM?
A. AIMs are daughter cards that plug internally into the Cisco MWR 1941-DC-A motherboard via an existing connector on the motherboard.
The AIM slot provides a way of integrating additional capabilities and offloading the main CPU from processor-intensive functions without reducing the LAN or WAN density of the Cisco MWR 1941-DC-A (by occupying an external WIC slot or network module slot). The ATM AIM is currently available for use in the Cisco MWR 1941-DC-A.
Q. What is the ATM AIM used for in the RAN Backhaul and Optimization solution?
A. The ATM AIM must be used to support connections to a UMTS NodeB or radio network controller (RNC). The interface to the NodeB or RNC is called the Iub interface and is ATM-based. The ATM AIM filters empty ATM cells and converts non-empty cells to packets. The RAN application then efficiently transports the UMTS packets over T1/E1 leased lines or metro Ethernet.
Q. How many AIMs are supported on the Cisco MWR 1941-DC-A?
A. The Cisco MWR 1941-DC-A platform supports one AIM slot on the motherboard.
Q. Is the AIM-ATM field-replaceable?
A. No. The AIM-ATM must be ordered from manufacturing. It is not a field-replaceable unit.
Q. Is the compact flash removable?
A. No.
Q. What type of DC power connector/cable does the Cisco MWR 1941-DC-A require?
A. The Cisco MWR 1941-DC-A requires a Phoenix 1754452 (P1=+Power, P2=Ground, P3=-
A. Power) and mates with Phoenix 1754465 cable connector on the router.
Q. When a single Cisco MWR 1941-DC-A is deployed at the cell site, can the router support dual DC power?
A. No. The Cisco MWR 1941-DC-A only has one connector on the rear of the router for DC power connector.
Q. Is AC power an option for the Cisco MWR 1941-DC-A?
A. Yes. An external AC power brick must be ordered from a third-party vendor.
XP ForeSight
990 Benecia Avenue
Sunnyvale, CA 94085-2912
408 732-7777
Model: AED100US48
Input: 100-240V; 1.5A; 47-63 Hz
Output: 48V 2.08A
Maximum power output: 100W
Q. Where can I order the customer Y cable required for Cisco MWR 1941-DC-A redundancy?
A. A custom T1/E1 Y cable is required for Cisco MWR-1941-DC-A redundancy. It is orderable from Anixter, a third-party vendor. Please see http://www.anixter.com for local sales offices worldwide.

Table 3. The Anixter Part Number/Description:

COMPULINK B04-0726-1-10F
RJ48C X 3 SHIELDED CONNECTORS
(T1) Y-ASSEMBLY, PVC, Y-CABLE
WITH RJ-48 TO (2) RJ-48
CONNECTORS
Q#00066036

Text Box:  Corporate HeadquartersCisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706USAwww.cisco.comTel:	408 526-4000	800 553-NETS (6387)Fax:	408 526-4100	European HeadquartersCisco Systems International BVHaarlerbergparkHaarlerbergweg 13-191101 CH AmsterdamThe Netherlandswww-europe.cisco.comTel:	31 0 20 357 1000Fax:	31 0 20 357 1100	Americas HeadquartersCisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706USAwww.cisco.comTel:	408 526-7660Fax:	408 527-0883	Asia Pacific HeadquartersCisco Systems, Inc.168 Robinson Road#28-01 Capital TowerSingapore 068912www.cisco.comTel: +65 6317 7777Fax: +65 6317 7799Cisco Systems has more than 200 offices in the following countries and regions. Addresses, phone numbers, and fax numbers are listed onthe Cisco Website at www.cisco.com/go/offices.Argentina · Australia · Austria · Belgium · Brazil · Bulgaria · Canada · Chile · China PRC · Colombia · Costa Rica · Croatia · Cyprus Czech Republic · Denmark · Dubai, UAE · Finland · France · Germany · Greece · Hong Kong SAR · Hungary · India · Indonesia · Ireland · Israel Italy · Japan · Korea · Luxembourg · Malaysia · Mexico · The Netherlands · New Zealand · Norway · Peru · Philippines · Poland · Portugal Puerto Rico · Romania · Russia · Saudi Arabia · Scotland · Singapore · Slovakia · Slovenia · South Africa · Spain · Sweden · Switzerland · Taiwan Thailand · Turkey · Ukraine · United Kingdom · United States · Venezuela · Vietnam · ZimbabweCopyright  2005 Cisco Systems, Inc. All rights reserved. CCSP, CCVP, the Cisco Square Bridge logo, Follow Me Browsing, and StackWise are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, and iQuick Study are service marks of Cisco Systems, Inc.; and Access Registrar, Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Empowering the Internet Generation, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, FormShare, GigaDrive, GigaStack, HomeLink, Internet Quotient, IOS, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, LightStream, Linksys, MeetingPlace, MGX, the Networkers logo, Networking Academy, Network Registrar, Packet, PIX, Post-Routing, Pre-Routing, ProConnect, RateMUX, ScriptShare, SlideCast, SMARTnet, StrataView Plus, TeleRouter, The Fastest Way to Increase Your Internet Quotient, and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0502R) 	205376.T_ETMG_LS_8.05Printed in the USA Text Box:  Corporate HeadquartersCisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706USAwww.cisco.comTel:	408 526-4000	800 553-NETS (6387)Fax:	408 526-4100	European HeadquartersCisco Systems International BVHaarlerbergparkHaarlerbergweg 13-191101 CH AmsterdamThe Netherlandswww-europe.cisco.comTel:	31 0 20 357 1000Fax:	31 0 20 357 1100	Americas HeadquartersCisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706USAwww.cisco.comTel:	408 526-7660Fax:	408 527-0883	Asia Pacific HeadquartersCisco Systems, Inc.168 Robinson Road#28-01 Capital TowerSingapore 068912www.cisco.comTel: +65 6317 7777Fax: +65 6317 7799Cisco Systems has more than 200 offices in the following countries and regions. Addresses, phone numbers, and fax numbers are listed onthe Cisco Website at www.cisco.com/go/offices.Argentina · Australia · Austria · Belgium · Brazil · Bulgaria · Canada · Chile · China PRC · Colombia · Costa Rica · Croatia · Cyprus Czech Republic · Denmark · Dubai, UAE · Finland · France · Germany · Greece · Hong Kong SAR · Hungary · India · Indonesia · Ireland · Israel Italy · Japan · Korea · Luxembourg · Malaysia · Mexico · The Netherlands · New Zealand · Norway · Peru · Philippines · Poland · Portugal Puerto Rico · Romania · Russia · Saudi Arabia · Scotland · Singapore · Slovakia · Slovenia · South Africa · Spain · Sweden · Switzerland · Taiwan Thailand · Turkey · Ukraine · United Kingdom · United States · Venezuela · Vietnam · ZimbabweCopyright  2005 Cisco Systems, Inc. All rights reserved. CCSP, CCVP, the Cisco Square Bridge logo, Follow Me Browsing, and StackWise are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, and iQuick Study are service marks of Cisco Systems, Inc.; and Access Registrar, Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Empowering the Internet Generation, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, FormShare, GigaDrive, GigaStack, HomeLink, Internet Quotient, IOS, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, LightStream, Linksys, MeetingPlace, MGX, the Networkers logo, Networking Academy, Network Registrar, Packet, PIX, Post-Routing, Pre-Routing, ProConnect, RateMUX, ScriptShare, SlideCast, SMARTnet, StrataView Plus, TeleRouter, The Fastest Way to Increase Your Internet Quotient, and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0502R) 	205376.T_ETMG_LS_8.05Printed in the USA