Showing results for 
Search instead for 
Did you mean: 

Cisco SIP phones 3905 don't get registered in SRST

Level 1
Level 1

SRST 9.1

CUCM 8.6

We have set 74 phones enable in CUCM to register in SRST, however only 7 phones got registered while in SRST.

Any ideas from where to start checking?


3 Replies 3

Level 9
Level 9

Hi Omni,

Easy to answer my friend. This phones are SIP you will need configure the (voice register global) and (voice register pool  1) to register them. Note that in voice register pool in the first line ( id network) is your local voice network. The secound line will be  CUCM address . when this address is reachable again, the phones back to register on CUCM.

config term



voice register global

timeouts interdigit 2

system message SRST-MIAMI

max-dn 4

max-pool 4


voice register dn  1

number 4310


voice register dn  2

number 4311


voice register dn  3

number 4312


voice register dn  2

number 4313


voice register pool  1

id network mask

proxy preference 1 monitor probe icmp-ping

dtmf-relay rtp-nte

voice-class codec 1

call-forward b2bua busy 80000

call-forward b2bua noan 80000


!The Callmanager fallback will used only for your skinny phones. So try to added  correct number of DN and PHONES !and remmember that the license of SRST will deduct the amount of phones that you declare as sip and skinny.




  maximum bit-rate 2048

secondary-dialtone 0

max-conferences 8 gain -6

transfer-system full-consult

user-locale PT

timeouts interdigit 3

ip source-address port 2000

max-ephones 236               ---------------------------> 236 skinny + 4 SIP phones = 240 phones in SRST

max-dn 236 dual-line

system message primary SRST MIAMI

system message secondary SRST

transfer-pattern ....

voicemail 80000

call-forward pattern ....

moh ""

multicast moh port 2000

time-zone 17

time-format 24

I hope help you with this information.



Daniel Sobrinho

Hi Daniel,

Those parameters are already configured as you can see from the output attached to this thread.


Hi Omni,

Please send me the complete output you can remove login, password and the address. I need only the output of configuration, as well as the show version.



Daniel Sobrinho
Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: