Cisco SPA2102-SF Administration Guide - Page 51

Voice tab > Line, NAT Mapping Enable, NAT Keep Alive Enable, Submit All Changes, NNAT Settings

Page 51 highlights

Configuring Your System for ITSP Interoperability Network Address Translation (NAT) and Voice over IP (VoIP) Voice tab > SIP > NAT Support Parameters 3 STEP 4 Click Voice tab > Line N, where N is the number of the line interface. STEP 5 Scroll down to the NAT Settings section. • NAT Mapping Enable: Choose yes. • NAT Keep Alive Enable: Choose yes (optional). Voice tab > Line N > NAT Settings NOTE Your ITSP may require the SPA device to send NAT keep alive messages to keep the NAT ports open permanently. Check with your ITSP to determine the requirements. STEP 6 Click Submit All Changes. NOTE You also need to configure the firewall settings on your router to allow SIP traffic. See "Firewalls and SIP," on page 53. Cisco Small Business ATA Administration Guide 51

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Configuring Your System for ITSP Interoperability
Network Address Translation (NAT) and Voice over IP (VoIP)
Cisco Small Business ATA Administration Guide
51
3
Voice tab > SIP > NAT Support Parameters
STEP
4
Click
Voice tab > Line
N
, where N is the number of the line interface.
STEP
5
Scroll down to the
NAT Settings
section.
NAT Mapping Enable:
Choose
yes
.
NAT Keep Alive Enable:
Choose
yes
(optional).
Voice tab > Line N > NAT Settings
NOTE
Your ITSP may require the SPA device to send NAT keep alive messages to
keep the NAT ports open permanently. Check with your ITSP to determine
the requirements.
STEP
6
Click
Submit All Changes
.
NOTE
You also need to configure the firewall settings on your router to allow SIP
traffic. See
“Firewalls and SIP,” on page 53
.