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New Member

Max-ephones question

Hi,  I have been asked to verify if we can raise the max-ephones in SRST mode from 40 to 80.  Is there a command(s) I can run to verify if the IOS and licenses on this router will support this?  I'm taking this on without history on the router so I don't what licenses are already installed on it.



IDGMEUBEK0001-vgr01#sho ver
Cisco IOS Software, 3800 Software (C3845-ADVENTERPRISEK9-M), Version 12.4(6)T9, RELEASE SOFTWARE (fc2)
Technical Support:
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Tue 09-Oct-07 16:26 by khuie

ROM: System Bootstrap, Version 12.4(13r)T10, RELEASE SOFTWARE (fc1)

IDGMEUBEK0001-vgr01 uptime is 19 weeks, 21 hours, 8 minutes
System returned to ROM by Reload Command
System restarted at 06:07:06 GMT Fri Oct 30 2009
System image file is "flash:c3845-adventerprisek9-mz.124-6.T9.bin"

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

If you require further assistance please contact us by sending email to

Cisco 3845 (revision 1.0) with 1008640K/39936K bytes of memory.
Processor board ID FHK1304F0PL
2 Gigabit Ethernet interfaces
31 Serial interfaces
2 Channelized E1/PRI ports
1 Virtual Private Network (VPN) Module
8 Voice FXO interfaces
DRAM configuration is 64 bits wide with parity enabled.
479K bytes of NVRAM.
255488K bytes of ATA System CompactFlash (Read/Write)

Configuration register is 0x2102


#sho call-manager-fallback
CONFIG [Version=3.4(0)]
Version 3.4(0)
For on-line documentation please see:

ip source-address port 2000
max-ephones 40
max-dn 80
max-conferences 8 gain -6
dspfarm units 0
dspfarm transcode sessions 0
moh SampleAudioSource.wav
time-format 12
date-format mm-dd-yy
timezone 0 Greenwich Standard Time
call-forward pattern 62213040....
transfer-pattern 62213040....
keepalive 30
timeout interdigit 10
timeout busy 10
timeout ringing 180
caller-id name-only: enable
Limit number of DNs per phone:
  7910: 36
  7935: 36
  7936: 36
  7940: 36
  7960: 36
  7970: 36
Log (table parameters):
     max-size: 150
     retain-timer: 15
transfer-system full-blind
multicast moh port 16384
local directory service: enabled.


IDGMEUBEK0001-vgr01#dir flash:
Directory of flash:/

    1  -rw-    39453144  Feb 24 1907 00:35:44 +00:00  c3845-adventerprisek9-mz.124-6.T9.bin
    2  -rw-        6627  Jul 20 2009 17:52:54 +00:00  its-CISCO.
    3  -rw-       26376  Jul 20 2009 16:30:26 +00:00
    4  -rw-       14352  Jul 17 2009 14:36:58 +00:00
    5  -rw-       19512  Jul 17 2009 14:37:48 +00:00
    6  -rw-       69189  Jul 20 2009 18:11:32 +00:00
    7  -rw-        3180  Jul 17 2009 15:08:46 +00:00  its_Cisco.
    8  -rw-       42484  Jul 20 2009 14:08:34 +00:00

261214208 bytes total (221564928 bytes free)

Super Bronze

Re: Max-ephones question


Your 3845 is certainly powerful enough to be extended - all the way up to 720 phones if you like (

The licensing of SRST isn't enforced in that version, your company will have bought a license that determines the number of phones you can have in SRST mode. The licenses were sold in sizes incrementing 24/48/96 etc as per this page:

So - you should really find out what was paid for... we can't help you with that, but can tell you there's nothing technical to stop you making the change.



Please rate helpful posts..

Aaron Please remember to rate helpful posts to identify useful responses, and mark 'Answered' if appropriate!
New Member

Re: Max-ephones question

Thanks Aaron!!!  I've been wracking my brains trying to find a straight answer on this from docs and other posts.  Five points!!!

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