View source for Cisco Integrated Service Router — 1800/2800/3800 SERIES AT-A-GLANCE- Comparative Overview

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||'''Model'''
|align="center"|'''Memory (Std/Max) Mbytes'''
|align="center"|'''LAN'''
|align="center"|''' WIC Slots'''
|align="center"|''' NM Slots'''
|align="center"|'''AIM Slots'''
|align="center"|'''DSP Slots'''
|align="center"|'''USB Ports'''
|align="center"|'''In-Line Power (Ports)'''
|align="center"|'''Form Factor'''
|align="center"|'''PS Redundancy'''
|align="center"|'''Voice Support'''
|align="center"|'''CUE Support'''
|align="center"|'''Max CCME Phones'''
|align="center"|'''Max SRST Phones'''
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||'''1711/ 17125'''
|align="center"|F: 32/32 D: 64/128 
|align="center"|5 E/FE 
|align="center"|No 
|align="center"|No
|align="center"| No 
|align="center"|No
|align="center"| No 
|align="center"|No
|align="center"| Desk
|align="center"|No
|align="center"|No
|align="center"|No
|align="center"|No
|align="center"|No
|-
||'''1721'''
|align="center"| F: 32/32 D: 64/128 
|align="center"|1 E/FE
|align="center"|2 VWIC/WIC (data only) 
|align="center"|No
|align="center"| No 
|align="center"|No
|align="center"| No 
|align="center"|No
|align="center"| Desk
|align="center"|No
|align="center"|No
|align="center"|No
|align="center"|No
|align="center"|No
|-
||'''1751'''
|align="center"| F: 32/32 D: 64/128
|align="center"| 1 E/FE
|align="center"|2 VWIC/WIC/VIC 1 VWIC/VIC (voice only) 
|align="center"|No 
|align="center"|No
|align="center"|2
|align="center"|No
|align="center"| No
|align="center"| Desk 
|align="center"|No 
|align="center"|DSP 
|align="center"|No 
|align="center"|24
|align="center"|24
|-
||'''1841'''
|align="center"|F: 32/128 D: 128/384 
|align="center"|2 E/FE
|align="center"|2 HWIC/VWIC/WIC (data only) 
|align="center"|No
|align="center"|1
|align="center"|No
|align="center"|1
|align="center"|No
|align="center"| Desk
|align="center"|No
|align="center"|No
|align="center"|No
|align="center"|No
|align="center"|No
|-
||'''1760'''
|align="center"|F: 32/64 D: 64/128 
|align="center"|1 E/FE
|align="center"|2 VWIC/WIC/VIC 2 VWIC/VIC (voice only) 
|align="center"|No 
|align="center"|No
|align="center"|2
|align="center"|No
|align="center"| No 
|align="center"|1U
|align="center"| No 
|align="center"|DSP
|align="center"| No 
|align="center"|24
|align="center"|24
|-
||'''2801'''
|align="center"|F: 64/128 D: 128/384 
|align="center"|2 E/FE
|align="center"|2 HWIC/VWIC/WIC/VIC 1 VWIC/WIC/VIC (voice/data) 1 VWIC/VIC (voice only)
|align="center"| No 
|align="center"|2
|align="center"|2
|align="center"|1
|align="center"|120W (16) 
|align="center"|1U
|align="center"| No 
|align="center"|DSP
|align="center"| AIM 
|align="center"|24
|align="center"|24
|-
||'''2611XM'''
|align="center"|F: 32/48 D: 128/256 
|align="center"|2 E/FE 
|align="center"|2 VWIC/WIC (data only) 
|align="center"|1  NM 
|align="center"|1
|align="center"|No
|align="center"| No
|align="center"| No 
|align="center"|1U
|align="center"|RPS-600 Conn.Opt.
|align="center"|AIM/ NM
|align="center"|AIM/ NM
|align="center"|36
|align="center"|36
|-
||'''2811'''
|align="center"|F: 64/256 D: 256/768 
|align="center"|2 E/FE 
|align="center"|4 HWIC/VWIC/WIC/VIC 
|align="center"|1 NME
|align="center"|2
|align="center"|2
|align="center"|2
|align="center"|160W (24)
|align="center"| 1U 
|align="center"|RPS-675 Conn.Std. 
|align="center"|DSP/ NM 
|align="center"|AIM/ NM
|align="center"|36
|align="center"|36
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||'''2621XM'''
|align="center"|F: 32/48 D: 128/256 
|align="center"|2 E/FE 
|align="center"|2 VWIC/WIC (data only)
|align="center"| 1 NM 
|align="center"|1
|align="center"|No 
|align="center"|No
|align="center"| No 
|align="center"|1U
|align="center"| RPS-600 Conn.Opt. 
|align="center"|AIM/NM 
|align="center"|AIM/NM 
|align="center"|36
|align="center"|36
|-
||'''2821'''
|align="center"|F: 64/256 D: 256/1GB 
|align="center"|2 E/FE/GE 
|align="center"|4 HWIC/VWIC/WIC/VIC 
|align="center"|1 NME-X  1 EVM-HD 
|align="center"|2
|align="center"|3
|align="center"|2
|align="center"| 240W (24)
|align="center"| 2U 
|align="center"|RPS-675 Conn.Std. 
|align="center"|DSP/ NM 
|align="center"|AIM/NM 
|align="center"|48
|align="center"|48
|-
||'''2651XM'''
|align="center"|F: 32/48 D: 256/256
|align="center"| 2 E/FE 
|align="center"|2 VWIC/WIC (data only) 
|align="center"|1 NM 
|align="center"|1
|align="center"| No 
|align="center"|No 
|align="center"|No 
|align="center"|1U
|align="center"| RPS-600 Conn.Opt.
|align="center"| AIM/NM
|align="center"| AIM/NM 
|align="center"|48
|align="center"|48
|-
||'''2691'''
|align="center"|F: 32/128 D: 256/256 
|align="center"|2 E/FE 
|align="center"|3 VWIC/WIC (data only) 
|align="center"|1 NM
|align="center"|2
|align="center"| No 
|align="center"|No 
|align="center"|No 
|align="center"|2U 
|align="center"|RPS-600 Conn.Opt. 
|align="center"|AIM/ NM 
|align="center"|AIM/ NM 
|align="center"|72
|align="center"|72
|-
||'''2851'''
|align="center"|F: 64/256 D: 256/1GB 
|align="center"|2 E/FE/GE
|align="center"| 4 HWIC/VWIC/WIC/VIC 
|align="center"|1 NME-XD  1 EVM-HD 
|align="center"|2
|align="center"|3
|align="center"|2
|align="center"|360W (44) 
|align="center"|2U 
|align="center"|RPS-675 Conn.Std. 
|align="center"|DSP/NM 
|align="center"|AIM/ NM
|align="center"|96
|align="center"|96
|-
||'''3725'''
|align="center"|F: 32/128 D: 256/256 
|align="center"|2 E/FE 
|align="center"|3 VWIC/WIC (data only)
|align="center"| 2 NM One NM can be used for a NMD 
|align="center"|2
|align="center"| No 
|align="center"|No 
|align="center"|360W (52) 
|align="center"|2U
|align="center"| RPS-600 Conn.Opt. 
|align="center"|AIM/NM 
|align="center"|AIM/NM 
|align="center"|144
|align="center"|144
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||'''3825'''
|align="center"|F: 64/256 D: 256/1GB
|align="center"| 2 E/FE/GE 1 SFP
|align="center"|4 HWIC/VWIC/WIC/VIC 
|align="center"|2 NME-X/EVM-HD8 One NME-X can be used for a NME-XD 
|align="center"|2
|align="center"|4
|align="center"|2
|align="center"|360W (52) 
|align="center"|2U
|align="center"| RPS-675 Conn.Std. 
|align="center"|DSP/NM 
|align="center"|AIM/NM 
|align="center"|168
|align="center"|336
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||'''3745'''
|align="center"|F: 32/128 D: 256/256 
|align="center"|2 E/FE 
|align="center"|3 VWIC/WIC (data only)
|align="center"| 4 NM Can be combined horiz. into up to 2 NMD
|align="center"|2
|align="center"|No 
|align="center"|No 
|align="center"|360W (72) 
|align="center"|2U 
|align="center"|Internal Red. PS Option 
|align="center"|AIM/NM
|align="center"| AIM/NM 
|align="center"|192
|align="center"|480
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||'''3845'''
|align="center"|F: 64/256 D: 256/1GB 
|align="center"|2 E/FE/GE 1 SFP
|align="center"|4 HWIC/VWIC/WIC/VIC 
|align="center"|4 NME-X/EVM-HD9 Can be combined horiz. into up to 2 NME-XD 
|align="center"|2
|align="center"|4
|align="center"|2
|align="center"| 360W (72) 
|align="center"|3U 
|align="center"|Internal Red. PS Option
|align="center"| DSP/NM 
|align="center"|AIM/NM 
|align="center"|240
|align="center"|720
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