Table Of Contents
Product Bulletin, No. 1596
Introduction
New Features
Detailed Information
Maintenance Support
Life Span
Supported Hardware Platforms
Product Numbers and Descriptions
Product Bulletin, No. 1596
Cisco IOS Software Release 12.2(4)XW
Introduction
This product bulletin describes the survivable-remote-site-telephony (SRST) feature introduced in
Cisco IOS® Software Release 12.2(4)XW for the Cisco 175x modular access routers.
New Features
The SRST feature provides the Cisco CallManager with fallback support for the Cisco IP phones attached to the router on your local Ethernet. It is currently supported on the Cisco 2600, 3600, 3810, IAD 2400, and Catalyst® 4224 platforms. With 12.2(4)XW, the SRST feature is introduced to the Cisco 175x Series routers.
Prior to SRST, when the WAN connection between the remote branch-office router and the Cisco CallManager failed, or connectivity with the Cisco CallManager was lost for some other reason, the Cisco IP phones at the branch office became unusable for the duration of the failure. SRST was developed to overcome this problem. The feature provides call-handling support on the branch-office router for its attached Cisco IP phones when a failure occurs. The system automatically detects the failure, and using Simple Network Auto-Provisioning (SNAP) technology, auto-configures the branch-office router to provide call-processing service for the local IP phones. When the failure is restored, call-handling capabilities for the Cisco IP phones switch back to the primary Cisco CallManager. During a failure, the Cisco IP Phone displays a message to inform the user that the Cisco IP Phone is in the Cisco CallManager fallback mode and is able to perform a limited set of functions.
By providing SRST features on the Cisco 175x routers, Cisco is reducing the likelihood of voice-service disruption, giving its customers the confidence to deploy multiservice e-business applications that will enhance employee productivity and reduce costs.
The SRST provides the following features on the Cisco 175x:
•
Rehoming of IP phones to a local router when WAN failures occur
•Maintenance of local extension-to-extension calls
•Maintenance of extension-to-Public Switched Telephone Network (PSTN) calls
•Maintenance of existing calls upon recovery
•Support for IP and basic-telephone-service (POTS) phones
•Speed dial and last-number redial
•Direct-outward-dial calling
•Direct-inward-dial calling
•Caller ID and automatic-number-identification (ANI) support
•Calling-party name
•Distinctive ringing
•Transfer (without consult)
•Call hold and pickup
•Call park and retrieve
•Call waiting
•Up to six lines per phone
•Up to 24 phones and 48 line appearances per system
SRST is supported in one image set IP/VOX PLUS for the Cisco 1750, and it is supported in all image sets containing VOX for the Cisco 1751. For details, refer to "Product Numbers and Descriptions" section.
Detailed Information
For more detailed information about the SRST feature with Cisco IOS Software Release 12.2(4)XW, reference the
following document:
Release Notes for Cisco 1700 Series Platforms for Cisco IOS Software Release 12.2(4) XW at:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122relnt/1700/rn1700xw.htm
Maintenance Support
Maintenance for the SRST feature on the Cisco 1700 will be available on future 12.2X special releases until the code is incorporated into the fourth maintenance software release of 12.2T.
Life Span
Cisco IOS Software Release 12.2(4)XW will be sold until the fourth maintenance release of Cisco IOS Software Release 12.2T.
Supported Hardware Platforms
Cisco IOS Software Release 12.2(4)XW supports the Cisco 1750 and the Cisco 1751 Modular Access Router.
Product Numbers and Descriptions
Images are available for downloading from Cisco.com as of November.19, 2001.
First customer shipment (FCS) is on December 3, 2001. Table 1 gives product numbers and descriptions.
Table 1 Product Numbers and Descriptions
Platform
|
Software Product Description
|
Software Image
|
Product Code
|
Support of SRST
|
Minimum Flash Memory
|
Minimum DRAM Memory
|
Cisco
1750/1751
|
Cisco 1700 Cisco IOS IP/ADSL/IP/AT/IBM/Voice/FW/ IDS Plus IPSec 56 *
|
c1700-bk8no3r2sv3y7-mz
|
S17Q7HVK8-12204XW
S17Q7HVK8-12204XW =
|
No
|
32 MB
|
64 MB
|
Cisco 1751
|
Cisco 1700 IOS IP/ADSL/IPX/AT/IBM/VOX/FW/IDS Plus IPSec 56 **
|
c1700-bk8no3r2sv8y7-mz
|
S17Q7V8K8-12204XW
S17Q7V8K8-12204XW =
|
Yes
|
32 MB
|
64 MB
|
Cisco
1720/1750/1751
|
Cisco 1700 IOS IP/ADSL/IPX/AT/IBM/FW/IDS Plus IPSec 56
|
c1700-bk8no3r2sy7-mz
|
S17Q7HK8-12204XW
S17Q7HK8-12204XW =
|
No
|
16 MB
|
48 MB
|
Cisco
1750/1751
|
Cisco 1700 IOS IP/ADSL/IPX/AT/IBM/Voice/FW/IDS Plus IPSec 3DES
|
c1700-bk9no3r2sv3y7-mz
|
S17Q7HVK9-12204XW
S17Q7HVK9-12204XW =
|
No
|
32 MB
|
64 MB
|
Cisco 1751
|
Cisco 1700 IOS IP/ADSL/IPX/AT/IBM/VOX/FW/IDS Plus IPSec 3DES
|
c1700-bk9no3r2sv8y7-mz
|
S17Q7V8K9-12204XW
S17Q7V8K9-12204XW =
|
Yes
|
32 MB
|
64 MB
|
Cisco
1720/1750/1751
|
Cisco 1700 IOS IP/ADSL/IPX/AT/IBM/FW/IDS Plus IPSec 3DES
|
c1700-bk9no3r2sy7-mz
|
S17Q7HK9-12204XW
S17Q7HK9-12204XW =
|
No
|
16 MB
|
48 MB
|
Cisco
1720/1750/1751
|
Cisco 1700 IOS IP/ADSL/IPX/AT/IBM Plus
|
c1700-bnr2sy7-mz
|
S17Q7P-12204XW
S17Q7P-12204XW =
|
No
|
16 MB
|
48 MB
|
Cisco
1720/1750/1751
|
Cisco 1700 IOS IP/IPX/AT/IBM
|
c1700-bnr2y-mz
|
S17Q-12204XW
S17Q-12204XW =
|
No
|
8 MB
|
32 MB
|
Cisco
1750/1751
|
Cisco 1700 IOS IP/ADSL/Voice/FW/IDS Plus IPSec 56
|
c1700-k8o3sv3y7-mz
|
S17C7HVK8-12204XW
S17C7HVK8-12204XW =
|
No
|
16 MB
|
48 MB
|
Cisco 1751
|
Cisco 1700 IOS IP/ADSL/VOX/FW/IDS Plus IPSec 56
|
c1700-k8o3sv8y7-mz
|
S17C7V8K8-12204XW
S17C7V8K8-12204XW =
|
Yes
|
16 MB
|
64 MB
|
Cisco
1720/1750/1751
|
Cisco 1700 IOS IP/ADSL/FW/IDS Plus IPSec 56
|
c1700-k8o3sy7-mz
|
S17C7HK8-12204XW
S17C7HK8-12204XW =
|
No
|
16 MB
|
48 MB
|
Cisco
1750/1751
|
Cisco 1700 IOS IP/ADSL/Voice Plus IPSec 56
|
c1700-k8sv3y7-mz
|
S17C7VK8-12204XW
S17C7VK8-12204XW =
|
No
|
16 MB
|
48 MB
|
Cisco 1751
|
Cisco 1700 IOS IP/ADSL/VOX Plus IPSec 56
|
c1700-k8sv8y7-mz
|
S17-12204XW
S17-12204XW=
|
Yes
|
16 MB
|
64 MB
|
Cisco
1720/1750/1751
|
Cisco 1700 IOS IP/Plus IPSec 56
|
c1700-k8sy7-mz
|
S17C7K8-12204XW
S17C7K8-12204XW =
|
No
|
16 MB
|
48 MB
|
Cisco
1750/1751
|
Cisco 1700 IOS IP/ADSL/Voice/FW/IDS Plus IPSec 3DES
|
c1700-k9o3sv3y7-mz
|
S17C7HVK9-12204XW
S17C7HVK9-12204XW =
|
No
|
16 MB
|
48 MB
|
Cisco 1751
|
Cisco 1700 IOS IP/ADSL/VOX/FW/IDS Plus IPSec 3DES
|
c1700-k9o3sv8y7-mz
|
S17C7V8K9-12204XW
S17C7V8K9-12204XW =
|
Yes
|
16 MB
|
64 MB
|
Cisco
1720/1750/1751
|
Cisco 1700 IOS IP/ADSL/FW/IDS Plus IPSec 3DES
|
c1700-k9o3sy7-mz
|
S17C7HK9-12204XW
S17C7HK9-12204XW =
|
No
|
16 MB
|
48 MB
|
Cisco
1750/1751
|
Cisco 1700 IOS IP/ADSL/Voice Plus IPSec 3DES
|
c1700-k9sv3y7-mz
|
S17C7VK9-12204XW
S17C7VK9-12204XW =
|
No
|
16 MB
|
48 MB
|
Cisco 1751
|
Cisco 1700 IOS IP/ADSL/VOX Plus IPSec 3DES
|
c1700-k9sv8y7-mz
|
S17CV8K9-12204XW
S17CV8K9-12204XW =
|
Yes
|
16 MB
|
64 MB
|
Cisco
1720/1750/1751
|
Cisco 1700 IOS IP/ADSL Plus IPSec 3DES
|
c1700-k9sy7-mz
|
S17C7K9-12204XW
S17C7K9-12204XW =
|
No
|
16 MB
|
48 MB
|
Cisco
1750/1751
|
Cisco 1700 IOS IP/ADSL/IPX/Voice/FW/IDS Plus
|
c1700-no3sv3y7-mz
|
S17B7HPV-12204XW
S17B7HPV-12204XW =
|
No
|
16 MB
|
48 MB
|
Cisco 1751
|
Cisco 1700 IOS IP/ADSL/IPX/VOX/FW/IDS Plus
|
c1700-no3sv8y7-mz
|
S17B7HPV8-12204XW
S17B7HPV8-12204XW =
|
Yes
|
16 MB
|
64 MB
|
Cisco
1720/1750/1751
|
Cisco 1700 IOS IP/ADSL/IPX/FW/IDS Plus
|
c1700-no3sy7-mz
|
S17B7HP-12204XW
S17B7HP-12204XW =
|
No
|
16 MB
|
48 MB
|
Cisco
1720/1750/1751
|
Cisco 1700 IOS IP/IPX
|
c1700-ny-mz
|
S17B-12204XW
S17B-12204XW =
|
No
|
8 MB
|
32 MB
|
Cisco
1750/1751
|
Cisco 1700 IOS IP/ADSL/Voice/FW/IDS Plus
|
c1700-o3sv3y7-mz
|
S17C7HV-12204XW
S17C7HV-12204XW =
|
No
|
16 MB
|
48 MB
|
Cisco 1751
|
Cisco 1700 IOS IP/ADSL/VOX/FW/IDS Plus
|
c1700-o3sv8y7-mz
|
S17C7HV8-12204XW
S17C7HV8-12204XW =
|
Yes
|
16 MB
|
64 MB
|
Cisco
1720/1750/1751
|
Cisco 1700 IOS IP/FW/IDS
|
c1700-o3y-mz
|
S17CH-12204XW
S17CH-12204XW =
|
No
|
8 MB
|
32 MB
|
Cisco
1750/1751
|
Cisco 1700 IOS IP/Voice Plus
|
c1700-sv3y-mz
|
S17CVP-12204XW
S17CVP-12204XW =
|
No
|
16 MB
|
48 MB
|
Cisco
1750/1751
|
Cisco 1700 IOS IP/ADSL/Voice Plus
|
c1700-sv3y7-mz
|
S17C7VP-12204XW
S17C7VP-12204XW=
|
No
|
16 MB
|
48 MB
|
Cisco
1750/1751
|
Cisco 1700 IOS IP/VOX Plus
|
c1700-sv8y-mz
|
S17CV8P-12204XW
S17CV8P-12204XW =
|
Yes
|
16 MB
|
48 MB
|
Cisco 1751
|
Cisco 1700 IOS IP/ADSL/VOX Plus
|
c1700-sv8y7-mz
|
S17C7V8P-12204XW
S17C7V8P-12204XW =
|
Yes
|
16 MB
|
64 MB
|
Cisco
1720/1750/1751
|
Cisco 1700 IOS IP/ADSL Plus
|
c1700-sy7-mz
|
S17C7P-12204XW
S17C7P-12204XW =
|
No
|
8 MB
|
48 MB
|
Cisco
1720/1750/1751
|
Cisco 1700 IOS IP
|
c1700-y-mz
|
S17C-12204XW
S17C-12204XW =
|
No
|
8 MB
|
32 MB
|
Cisco
1720/1750/1751
|
Cisco 1700 IOS IP/ADSL
|
c1700-y7-mz
|
S17C7-12204XW
S17C7-12204XW =
|
No
|
8 MB
|
32 MB
|
* Asymmetric Digital Subscriber Line (ASDL), Apple Talk (AT), Firewall (FW), Intrusion Detection System (IDS), IP Security (IPSec), Triple Digital Encryption Standard (3DES)
**Voice Entended Features (VOX)
