Dial-peer 2 establishes the Teldat-3Ge IP address of any calls detected by the SIP session to the IP address defined
in the target ipv4 parameter. Additionally, if RTP traffic is generated during the moments of silence and the audio co-
dification is G711, the Teldat-3Ge must accept it.
The final step is to configure the router’s SIP agent (for more information, see manual Dm 766-I SIP):
protocol sip
; -- SIP protocol configuration --
application address 172.24.78.29
application gateway
exit
;
The IP address that appears in the application address parameter is the router’s address. This is the address where
the router receives the SIP traffic.
The application gateway parameter activates the router so it can establish calls between VoIP interfaces (analog
telephones) and SIP dial-peers.
The UDP/TCP port where the SIP server listens is, by default, 5060. In cases where you wish to change the port
value (e.g. to 5000), use the application port command as follows:
protocol sip
; -- SIP protocol configuration --
application address 172.24.78.29
application port 5000
application gateway
exit
;
A change in the value of this port affects the DHCP configuration. Option 43 must be modified to reconfigure the
Teldat-3Ge SIP agent listening port.
By default, the SIP traffic transport protocol in the corporate router is UDP. The transport protocol cannot be changed
to either TCP or TLS. The Teldat-3Ge SIP agent only uses the UDP protocol as in a corporate Ethernet environ-
ment. It doesn’t make sense to use protocols that further complicate SIP transport.
Note
The Teldat-3Ge SIP agent always uses the UDP protocol to transport SIP traffic. It never uses TCP.
The UDP port value is configurable through the DHCP protocol option 43 (configured in the router).
2.8.2 Backup with SIP-IP telephones
A VoIP expansion module is not necessary in this schema, meaning the configuration is limited to the part involving
the dial-peer and the SIP protocol.
The dial-peer configuration is as follows:
telephony
; -- Telephony configuration --
dial-peer 1 sip
no vad
destination-pattern T
target ipv4 192.24.78.28
exit
;
dial-peer 2 sip
destination-pattern 607081119
target dynamic
exit
;
exit
;
2 Configuration
Teldat S.A.
10
Teldat-3Ge Quick Guide