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New Member




Dear Team,


I have an SRST scenario for my customer that have SIP and SCCP phones in its Branches. Branches are connected to HQ CUCM using

MulitSite Centralized IPT enviroment and the branches gateways are added as an H.323 gateways.


as we are testing the SRST feature the SCCP phones (8945) are fallover to the SRST gateway successfully as well as the SIP phones (7841).

SCCP phones are being able to call each other and to call SIP Phones.

However SIP phones are not being able to call any SIP,SCCP IP phones.

while debugging the VGW (attatched) along with its show run the following occurs:

1. SCCP to SIP --> a dial peer is matched and the call goes through.

2. SIP to SCCP --> No Dial Peer is matched and the call does not go through.

3. SIP to SIP -->  No Dial Peer is matched and the call does not go through

The below is the configuration for SIP


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
  bind control source-interface GigabitEthernet0/0.31
  bind media source-interface GigabitEthernet0/0.31
  registrar server expires max 200 min 60
voice register global
 mode srst
 system message Customer
 max-dn 10
 max-pool 10
dialplan-pattern 1 7... extension-length 4
 application sip
voice register pool  5
 translation-profile outgoing emergency
 id network mask
 no digit collect kpml
 dtmf-relay sip-notify
 codec g711ulaw
 no vad


SCCP Config


 max-conferences 8 gain -6
 transfer-system full-consult
 ip source-address port 2000
 max-ephones 25
 max-dn 25
 system message primary Customer_SRST


Can you please help me why i am not being able to do Outbound Dialing using the SIP phones? and is there any automated dial-peers that

need to be generated i am being missing in the configuration.



Ammar Said



New Member

Dear All,I applied this

Dear All,

I applied this command and it worked.

Voice service voip

no ip address trusted authenticate



Ammar Said


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