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Problem with cisco 3905 SIP Phones


I have registered 10 cisco ip phone 3905(SIP) and 2 7945 (SCCP) on CUCME 9.1 . Communicaton between 3905 and 7945, and outside to PSTN works. i have configured dial-peer to other call manager 6.1. calling from 7945 to phones registered on call manager(7911) is working perfectly. When I make a calls to phones registered on call manager(7911) ringing is working but i cannot established connection (audio drops). Calling from 7911 to 3905 is workink also. Codec is OK, CSS is OK. sip to h323 and h323 to sip is ok. I think that i have some problem with SIP signaling. please advise.


voice service voip

allow-connections h323 to h323

allow-connections h323 to sip

allow-connections sip to h323

allow-connections sip to sip

fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none



  registrar server expires max 1200 min 300


voice class codec 1

codec preference 1 g711ulaw

codec preference 2 g711alaw

codec preference 3 g729r8

codec preference 4 g729br8


voice class h323 1

  h225 timeout tcp establish 3



voice register global

mode cme

source-address port 5060

max-dn 50

max-pool 25

load 3905 CP3905.9-2-1-0

authenticate register

authenticate realm lukoil.local

timezone 24

time-format 24

date-format D/M/Y

tftp-path flash:

create profile sync 0001409928815001


voice register dn  3

number 303

allow watch

name x

label x


voice register dn  4

number 304

allow watch

name y

label y

voice register pool  3

id mac xxxx.xxxx.xxxx

type 3905

number 1 dn 3

dtmf-relay rtp-nte sip-kpml cisco-rtp sip-notify

voice-class codec 1

username 303 password X

description X


voice register pool  4

id mac xxxx.xxxx.xxxx

type 3905

number 1 dn 4

dtmf-relay rtp-nte sip-kpml cisco-rtp sip-notify

voice-class codec 1

username 304 password Y

description Y

interface GigabitEthernet0/0

ip address

ip nat inside

ip virtual-reassembly in

ip ospf message-digest-key 10 md5 xxxx

duplex auto

speed auto

h323-gateway voip interface

h323-gateway voip bind srcaddr

tftp-server flash:SCCP45.9-2-1S.loads

tftp-server flash:cnu45.9-2-1TH1-13.sbn

tftp-server flash:apps45.9-2-1TH1-13.sbn

tftp-server flash:dsp45.9-2-1TH1-13.sbn

tftp-server flash:term45.default.loads

tftp-server flash:jar45sccp.9-2-1TH1-13.sbn

tftp-server flash:APP3905.9-2-1-0.zz

tftp-server flash:CP3905.9-2-1-0.loads

tftp-server flash:term65.default.loads

tftp-server flash:cvm45sccp.9-2-1TH1-13.sbn

tftp-server flash:apps31.9-2-1TH1-13.sbn

tftp-server flash:cnu31.9-2-1TH1-13.sbn

tftp-server flash:cvm31sccp.9-2-1TH1-13.sbn

tftp-server flash:dsp31.9-2-1TH1-13.sbn

tftp-server flash:jar31sccp.9-2-1TH1-13.sbn

tftp-server flash:SCCP31.9-2-1S.loads

tftp-server flash:term31.default.loads

dial-peer voice 100 voip

destination-pattern [12]..

session target ipv4:

voice-class codec 1 

dtmf-relay cisco-rtp rtp-nte h245-signal h245-alphanumeric

no vad




presence enable









max-ephones 25

max-dn 50

ip source-address port 2000

timeouts interdigit 4

system message LUKOIL Montenegro

cnf-file location flash:

load 7931 SCCP31.9-2-1S

load 7945 SCCP45.9-2-1S

time-zone 24

time-format 24

date-format dd-mm-yy

max-conferences 8 gain -6

transfer-system full-consult

create cnf-files version-stamp 7960 Oct 18 2012 22:08:56



ephone-dn  1  dual-line

number 301

label x

name x

allow watch

ephone  1

device-security-mode none

description x

mac-address xxxx.xxxx.xxxx

type 7945

button  1:1 2w2


I added enable faststart on gateway setting in call manager and everything worked

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