To see a list of Cisco IOS releases that support Cisco Unified SRST, see the Cisco Unifed CME Compatibility Matrix. Cisco Unified SRST is compatible with the same Cisco IOS releases as Cisco Unified CME.
To obtain the latest Cisco Unified SRST DDTS information, go to Bug Toolkit and search, by product, under Cisco Survivable Remote Site Telephony.
Cisco Unified IP Phone Support
Device Type
SCCP Firmware Filename
SIP Firmware Filename
Comments
CiscoATA-186 CiscoATA-188
ATA030203SCCP051201A
N/A
Cisco IP Communicator
2.1.1
N/A
Cisco VG224
12.4(13.13)T4
N/A
Cisco Unified IP Phone 7902G Cisco Unified IP Phone 7905G Cisco Unified Phone 7912G
CP7902080002SCCP060817A
CP7905080001SIP060412A
Cisco Unified IP Phone 7906G Cisco Unified IP Phone 7911G
SCCP11.8-3-1S
SIP11.8-3-1S
Cisco Unified IP Phone 7910
P00405000700
N/A
Cisco Unified IP Phone 7912
CP7912080003SCCP070409A
CP7912080001SIP060412A
Cisco Unified IP Phone 7914 Expansion Module
S00105000300
N/A
Cisco Unified IP Phone 7915 Expansion Module
B015-1-0-3
N/A
Supported with Cisco IOS Release 12.4(15)T8. Supports only 36 buttons.
Cisco Unified IP Phone 7916 Expansion Module
B016-1-0-3
N/A
Supported with Cisco IOS Release 12.4(15)T8. Supports only 36 buttons.
Cisco Unified Wireless IP Phone 7920
cmterm_7920.4.0-03-02
N/A
Cisco Unified Wireless IP Phone 7921
CP7921G-1.0.3
N/A
Cisco Unified IP Phone 7931
CMTERM_7931.8-3-1
N/A
Cisco Unified IP Conference Station 7935
CMTERM_7935.3-2-17-0
N/A
Cisco Unified IP Conference Station 7936
CMTERM_7936.3-3-14-0
N/A
Cisco Unified IP Phone 7940G Cisco Unified IP Phone 7960G
P00308000700
P0S3-08-6-02
Cisco Unified IP Phone 7941G, 7941G-GE* Cisco Unified IP Phone 7961G, 7961G-GE*
SCCP41.8-3-1S
SIP41.8-3-1S
Cisco Unified IP Phone 7942G Cisco Unified IP Phone 7962G
SCCP42.8-3-2S
SIP42.8-3-2S
Cisco Unified IP Phone 7945G Cisco Unified IP Phone 7965G
SCCP45.8-3-2S
SIP45.8-3-2S
Cisco Unified IP Phone 7970G Cisco Unified IP Phone 7971G-GE
SCCP70.8-3-1S
SIP70.8-3-1S
Cisco Unified IP Phone 7975
SCCP70.8-3-2S
SIP70.8-3-2S
Cisco Unified IP Phone 7985G
cmterm_7985.4-1-4-0
N/A
*These phones are supported with SRST 4.1, 12.4(15)T
Supported Platforms and Memory Specifications: SCCP/SIP IP Phones*
Cisco Platform
Maximum Total IP Phones**
Maximum SCCP/SIP IP Phones
Maximum Total Ephone-dns or
Virtual
Ports
Recommended DRAM
Recommended Flash Memory
Cisco 1751-V
24
24
144
128
32
Cisco 1760, Cisco 1760-V
24
24
144
128
32
Cisco 261xXM, 262xXM
36
36
144
128
48
Cisco 2650XM, 2651XMx
48
48
192
128
48
Cisco 2691
72
72
288
256
64
Cisco 2801
24
24
120
128
64
Cisco 2811
36
36
144
256
64
Cisco 2821
48
48
192
256
64
Cisco 2851
96
96
288
256
64
Cisco 3725
144
144
960
256
64
Cisco 3745
480
480
960
256
64
Cisco 3825
336
336
960
256
64
Cisco 3845
720
720
960
256
64
Catalyst 6500 CMM***
480
480
800
256
64
* 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.
** The Maximum Total IP Phones can be split between SCCP and SIP phones as long as the maximum total of IP phones are reached.
*** Cisco Caalyst 6500 CMM supports Cisco Unified SRST 4.0 with Cisco IOS Release 12.4 and supports Cisco Unified SRST 2.1 with Cisco IOS Release 12.2(13)ZC.
To get the same number of SIP IP phones support as SCCP IP Phones, SRST 4.1 in 12.4(15)T is required.
Compatible Voice Products
Product Name
Version(s)
Comments
Cisco CallManager, SCCP phones only
3.3, 3.2
Cisco SRST is not dependent on Cisco CallManager versions, but phone loads.
Cisco CallManager, SCCP phones only
4.0/4.0 SR1
SRST Versions 3.1 and 3.2 were tested with cmterm-7940-7960-sccp.6-0-1.exe and 6-0.2.exe.
Cisco CallManager, SCCP phones only
4.1.3 SR2
SRST Version 3.4 was tested with the following IP phones: Cisco 7970G, Cisco 7960G, and Cisco 7912G.
Cisco CallManager, SCCP and SIP phones
5.x
See above phone firmware vs phont type table
Cisco Unified Communication Manager, SCCP and SIP phones