Cisco Unified Survivable Remote Site Telephony (Unified
SRST)/Enhanced SRST (E-SRST) 14.5
Supported Firmware, Platforms, Memory, and Voice Products
First Published: August 30, 2024
About Unified SRST and E-SRST 14.5 |
|
Documentation |
See Cisco Unified SRST. For information on feature support across platforms and protocols, see Unified SRST Platform Protocol Compatibility Matrix |
Secure SRST |
See Setting Up Secure SRST. Cisco Unified Communications Manager 4.1(2) or a later version is required for secure Cisco Unified SRST. Secure E-SRST is not supported. |
Secure SRST Specifications |
See the Media and Signaling Authentication and Encryption Feature for Cisco IOS MGCP Gateways for complete specifications. |
Cisco IOS Compatibility |
To see a list of Cisco IOS releases that support Cisco Unified SRST, see the Unified CME, SRST, and Cisco IOS Compatibility Matrix. Cisco Unified SRST is compatible with the same Cisco IOS releases as Cisco Unified CME. |
Downloads |
To download Cisco Unified SRST software, go to Technical Support Software Download for Cisco Unified CME and Cisco Unified SRST. Cisco Unified SRST supports Cisco Unified Communications Manager firmware. For more information, see the CiscoUnified Communications Manager Compatibility Matrix. You can download firmware files from Technical Support Software Center for Voice Software. |
DDTS Information |
To obtain the latest Cisco Unified SRST DDTS information, go to Bug Toolkit and search, by product, under Cisco Survivable Remote Site Telephony. |
Note: The endpoints, devices, and platforms listed in the document will not be supported with Unified SRST after they reach End-of-life or End-of-Support.
Cisco Unified IP Phone Support |
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Device Type |
SCCP Firmware Filename |
UCM SIP Firmware Filename |
Comments |
Cisco ATA-191 |
N/A |
12-0-1-0506-010 |
|
Cisco ATA-190 |
N/A |
ATA190.1-2-1(004) |
|
Cisco ATA-187 |
N/A |
9.2.2 |
|
CiscoATA-186 |
ATA030203SCCP051201A.zup |
|
|
Cisco Cius |
N/A |
9-2-1SR2-21SEC |
|
Cisco IP Communicator |
See software download site for latest firmware version. |
N/A |
|
Cisco VG202 |
15.2(1)T |
N/A |
|
Cisco VG204 |
15.2(1)T |
N/A |
|
Cisco VG224 |
15.2(1)T |
N/A |
|
Cisco VG310 |
Cisco IOS XE Fuji 16.9.1 |
N/A |
|
Cisco VG320 |
Cisco IOS XE Fuji 16.9.1 |
N/A |
|
Cisco VG350 |
Cisco IOS XE Fuji 16.9.1 |
N/A |
|
Cisco VG400 |
Cisco IOS XE Gibraltar 16.10.1a |
N/A |
|
Cisco VG410 |
Cisco IOS XE Dublin 17.12.1a |
N/A |
|
Cisco VG420 |
Cisco IOS XE Dublin 17.12.1a |
N/A |
|
Cisco VG450 |
Cisco IOS XE Fuji 16.9.1 |
N/A |
|
Cisco Unified IP Phone 3905 |
N/A |
APP3905.9-2-1-0.zz |
|
Cisco Unified IP Phone 3911 |
N/A |
BOOT3951.0-0-0-9.zz |
|
Cisco Unified IP Phone 6901 |
APP6901SCCP.9-2-1-a.zz.sgn |
APP6901SIP.9-2-1-0.zz.sgn |
|
Cisco Unified IP Phone 6921 |
BOOT69xx.0-0-0-14.zz.sgn |
BOOT69xx.0-0-0-14.zz.sgn |
|
Cisco Unified IP Phone 6945 |
SCCP6945.9-2-1-0.bin1.sgn |
SIP6945.9-2-1-0.bin1.sgn SIP6945.9-2-1-0.bin2.sgn SIP6945.9-2-1-0.bin3.sgn SIP6945.9-2-1-0.bin4.sgn SIP6945.9-2-1-0.loads |
|
Cisco Unified IP Phone 7811 |
  |
kern2.78xx.12-0-1-11.sbn |
|
Cisco IP Conference Phone 7832 |
  |
kern7832.12-1-1-12.sbn |
|
Cisco Unified IP Phone 7821 |
N/A |
kern2.78xx.12-0-1-11.sbn |
|
Cisco Unified IP Phone 7902G |
CP7902080002SCCP060817A.sbin |
|
|
Cisco Unified IP Phone 7905G |
CP7905080002SCCP07040A.sbin (signed) |
|
|
Cisco Unified IP Phone 7906G |
SCCP11.9-2-1S.loads |
SIP11.9-2-1S.loads |
|
Cisco Unified IP Phone 7910 |
N/A |
|
|
Cisco Unified IP Phone 7912 |
CP7912080004SCCP080108A.sbin |
CP7912080001SIP060412A.sbin |
|
Cisco Unified IP Phone 7914 Expansion Module |
S00105000400.sbn |
N/A |
|
Cisco Unified IP Phone 7915 ** Expansion Module |
B015-1-0-4.sbn |
N/A |
|
Cisco Unified IP Phone 7916 ** Expansion Module |
B016-1-0-4.sbn |
N/A |
|
Cisco Unified Wireless IP Phone 7920 |
See software download site for latest firmware version. |
N/A |
|
Cisco Unified Wireless IP Phone 7921 |
See software download site for latest firmware version. |
N/A |
|
Cisco Unified Wireless IP Phone 7925 |
See software download site for latest firmware version. |
N/A |
|
Cisco Unified Wireless IP Phone 7926 |
APPSS-1.4.1SR1.SBN |
N/A |
|
Cisco Unified IP Phone 7931 |
SCCP31.9-2-1S.loads |
N/A |
|
Cisco Unified IP Conference Station 7935 |
P00503010800.bin |
N/A |
|
Cisco Unified IP Conference Station 7936 |
See software download site for latest firmware version |
N/A |
|
Cisco Unified IP Conference Station 7937 |
See software download site for latest firmware version |
N/A |
|
Cisco Unified IP Phone 7940G |
P00308010200.bin |
P003-8-12-00.bin |
|
Cisco Unified IP Phone 7941G, 7941G-GE* |
SCCP41.9-2-1S.loads |
SIP41.9-2-1S.loads |
|
Cisco Unified IP Phone 7942G |
SCCP42.9-2-1S.loads |
SIP42.9-2-1S.loads |
|
Cisco Unified IP Phone 7945G |
SCCP45.9-2-1S.loads |
SIP45.9-2-1S.loads |
|
Cisco Unified IP Phone 7961G, 7961G-GE* |
SCCP41.9-2-1S.loads |
SIP41.9-2-1S.loads |
|
Cisco Unified IP Phone 7970G |
SCCP70.9-2-1S.loads |
SIP70.9-2-1S.loads |
|
Cisco Unified IP Phone 7975 |
SCCP75.9-2-1S.loads |
SIP75.9-2-1S.loads |
|
Cisco Unified IP Phone 7985G
|
See software download site for latest firmware version. |
N/A |
|
Cisco Unified IP Phone 8811
|
N/A
|
boot1288xx.BE-01-007.sbn fbi88xx.BE-01-010.sbn kern88xx.12-0-1-11.sbn kern288xx.12-0-1-11.sbn m0patch288xx.BE-01-001.sbn rootfs88xx.12-0-1-11.sbn rootfs288xx.12-0-1-11.sbn sb288xx.BE-01-024.sbn sb2288xx.BE-01-010.sbn sip88xx.12-0-1-11.loads ssb288xx.BE-01-005.sbn vc488xx.12-0-1-11.sbn |
|
Cisco Wireless IP Phone 8821
|
N/A
|
dtblob8821.HE-01-005.sbn |
|
Cisco Unified IP Conference Phone 8831
|
N/A
|
kern8831.10-3-1SR3-5.sbn rootfs8831.10-3-1SR3-5.sbn sboot8831.10-3-1SR3-5.sbn sip8831.10-3-1SR3-5.loads |
|
Cisco IP Conference Phone 8832 |
  |
kern8832.12-1-1-23.sbn |
|
Cisco Unified IP Phone 8841
|
N/A
|
boot1288xx.BE-01-007.sbn fbi88xx.BE-01-010.sbn kern88xx.12-0-1-11.sbn kern288xx.12-0-1-11.sbn m0patch288xx.BE-01-001.sbn rootfs88xx.12-0-1-11.sbn rootfs288xx.12-0-1-11.sbn sb288xx.BE-01-024.sbn sb2288xx.BE-01-010.sbn sip88xx.12-0-1-11.loads ssb288xx.BE-01-005.sbn vc488xx.12-0-1-11.sbn |
|
Cisco Unified IP Phone 8845
|
N/A
|
fbi8845_65.BEV-01-006.sbn kern8845_65.12-0-1-11.sbn rootfs8845_65.12-0-1-11.sbn sb28845_65.BEV-01-015.sbn sip8845_65.12-0-1-11.loads vc48845_65.12-0-1-11.sbn |
|
Cisco Unified IP Phone 8851
|
N/A
|
boot1288xx.BE-01-007.sbn fbi88xx.BE-01-010.sbn kern88xx.12-0-1-11.sbn kern288xx.12-0-1-11.sbn m0patch288xx.BE-01-001.sbn rootfs88xx.12-0-1-11.sbn rootfs288xx.12-0-1-11.sbn sb288xx.BE-01-024.sbn sb2288xx.BE-01-010.sbn sip88xx.12-0-1-11.loads ssb288xx.BE-01-005.sbn vc488xx.12-0-1-11.sbn |
|
Cisco Unified IP Phone 8851NR
|
N/A
|
boot1288xx.BE-01-007.sbn fbi88xx.BE-01-010.sbn kern88xx.12-0-1-11.sbn kern288xx.12-0-1-11.sbn m0patch288xx.BE-01-001.sbn rootfs88xx.12-0-1-11.sbn rootfs288xx.12-0-1-11.sbn sb288xx.BE-01-024.sbn sb2288xx.BE-01-010.sbn sip88xx.12-0-1-11.loads ssb288xx.BE-01-005.sbn vc488xx.12-0-1-11.sbn |
|
Cisco Unified IP Phone 8861
|
N/A
|
boot1288xx.BE-01-007.sbn fbi88xx.BE-01-010.sbn kern88xx.12-0-1-11.sbn kern288xx.12-0-1-11.sbn m0patch288xx.BE-01-001.sbn rootfs88xx.12-0-1-11.sbn rootfs288xx.12-0-1-11.sbn sb288xx.BE-01-024.sbn sb2288xx.BE-01-010.sbn sip88xx.12-0-1-11.loads ssb288xx.BE-01-005.sbn vc488xx.12-0-1-11.sbn |
|
Cisco Unified IP Phone 8865
|
N/A
|
fbi8845_65.BEV-01-006.sbn kern8845_65.12-0-1-11.sbn rootfs8845_65.12-0-1-11.sbn sb28845_65.BEV-01-015.sbn sip8845_65.12-0-1-11.loads vc48845_65.12-0-1-11.sbn |
|
Cisco Unified IP Phone 8941/8945 |
BOOT894x.0-0-0-9.bin.sgn |
BOOT894x.0-0-0-9.bin.sgn SIP894x.9-2-2-0.bin1.sgn SIP894x.9-2-2-0.bin2.sgn SIP894x.9-2-2-0.bin3.sgn SIP894x.9-2-2-0.bin4.sgn SIP894x.9-2-2-0.bin5.sgn SIP894x.9-2-2-0.bin6.sgn SIP894x.9-2-2-0.bin7.sgn SIP894x.9-2-2-0.bin8.sgn SIP894x.9-2-2-0.bin9.sgn SIP894x.9-2-2-0.loads |
|
Cisco Unified IP phone 8961 ** |
N/A |
cmterm-8961.9-3-4-24.2SR1-cop.sgn |
Supported as Cisco regular SIP IP phones |
Cisco Unified IP Phone 9951 ** |
N/A |
cmterm-9951.9-3-4-24.2SR1-cop.sgn |
Supported as Cisco regular SIP IP phones |
Cisco Unified IP Phone 9971** |
N/A |
cmterm-9971.9-3-4-24.2SR1-cop.sgn |
Supported as Cisco regular SIP IP phones |
KEM Module |
N/A |
SIP9971.9-2-3-27.loads |
Sidecar for 99xx phone types |
Cisco Jabber for Windows |
N/A |
14.0.4 |
Supported with Unified SIP SRST 12.8 and later releases. |
Cisco Jabber for Mac |
N/A |
14.0.4 |
Supported with Unified SIP SRST 12.8 and later releases. |
Cisco Webex App for Windows |
N/A |
42.1 |
Supported with Unified SIP SRST 12.8 and later releases. |
Cisco Webex App for Mac |
N/A |
42.1 |
Supported with Unified SIP SRST 12.8 and later releases. |
Cisco Desk Phone 9841 (DP-9841) |
N/A |
cmterm-PHONEOS.3-1-1-0004-36.cop.sha512 |
Supported with Unified SIP SRST 14.5 and later releases |
Cisco Desk Phone 9851 (DP-9851) |
N/A |
cmterm-PHONEOS.3-1-1-0004-36.cop.sha512 |
Supported with Unified SIP SRST 14.5 and later releases |
Cisco Jabber for Android and Cisco Jabber for iPhone and iPad are not supported with Unified SRST. Cisco Webex for Android and Cisco Webex for iPhone and iPad are not supported with Unified SRST. *These phones are supported beginning in Cisco Unified SRST 4.1 and Cisco IOS Release 12.4(15)T ** These phones are supported on IOS release 15.1(1)T with SRST 8.0, not on 15.0(1)XA release. |
Supported Platforms and Memory Specifications: SCCP/SIP IP Phones* |
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Cisco Platform |
Maximum Phones |
Maximum Phone Lines |
Recommended DRAM |
Recommended Flash Memory |
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Cisco ISR 1100 |
50 |
200 |
4 GB |
4 GB |
||
Cisco ISR 4321 |
50 |
200 |
4 GB |
4 GB |
||
Cisco ISR 4331 |
100 |
400 |
4 GB |
4 GB |
||
Cisco ISR 4351 |
700 |
1000 |
4 GB |
4 GB |
||
Cisco ISR 4431 |
1200 |
1800 |
4 GB |
8 GB |
||
Cisco ISR 4451 |
2000 |
2500 |
4 GB |
8 GB |
||
Cisco ISR 4461 |
2000 |
2500 |
8 GB |
8 GB |
||
Cisco C8200L-1N-4T |
1500 |
2500 |
4 GB |
8 GB |
||
Cisco C8200-1N-4T |
2500 |
3500 |
8 GB |
8 GB |
||
Cisco C8300-1N1S-6T |
2500 |
3500 |
8 GB |
8 GB |
||
Cisco C8300-1N1S-4T2X |
2500 |
3500 |
8 GB |
8 GB |
||
Cisco C8300-2N2S-6T |
2500 |
3500 |
8 GB |
8 GB |
||
Cisco C8300-2N2S-4T2X |
2500 |
3500 |
8 GB |
8 GB |
||
Cisco Catalyst 8000V Edge Software (Small) |
500 |
2000 |
4 GB |
8 GB |
||
Cisco Catalyst 8000V Edge Software (Medium) |
1000 |
2000 |
4 GB |
8 GB |
||
Cisco Catalyst 8000V Edge Software (Large) |
2000 |
2000 |
8 GB |
8 GB |
||
* Memory recommendations and maximum numbers of IP phones are for common Cisco SRST configurations only. Systems with large numbers of phones and complex configurations may not work on all platforms and can require additional memory or a higher performance platform. * A mix of SCCP and SIP phones may be used, provided that the combined total does not exceed the maximum listed above. * Unified SRST for Catalyst 8000V Edge does not support FXO and T1/E1 on the PSTN trunk. * ISR1100 (4G/6G/X) models running on IOS XE supports SRST feature. |