Configuring The Protocol On A Cisco Spa525G Or Cisco Spa525G2; Configuring The Protocol On A Cisco Spa300 Series Or Cisco Spa500 Series Ip Phone; Managing Nat Transversal With Cisco Ip Phones - Cisco SPA301 Administration Manual

Configuring SIP, SPCP, and NAT

Managing NAT Transversal with Cisco IP Phones

Managing NAT Transversal with Cisco IP Phones
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide
Configuring the Protocol on a Cisco SPA525G or
Cisco SPA525G2
To configure the protocol on the Cisco SPA525G or Cisco SPA525G2, navigate to
Admin Login > advanced > Voice > System. Under System Configuration in the
SPA525-protocol field, choose SCCP or SIP.
To configure the phone to automatically detect the protocol being used on the
network that it is connected to, in the SPA525-auto-detect-sccp field, choose yes.
Configuring the Protocol on a Cisco SPA300 Series or
Cisco SPA500 Series IP Phone
To configure the protocol on a Cisco SPA300 Series or Cisco SPA500 Series IP
phone, navigate to Admin Login > advanced > Voice > System. Under System
Configuration in the Signaling Protocol field, choose SCCP or SIP.
To configure the phone to automatically detect the protocol being used on the
network that it is connected to, in the SPCP Auto-detect field, choose yes. The
phone defaults to SIP unless it detects a Cisco Unified Communications device.
When set to no, the phone uses the protocol set in the Signaling Protocol field.
The Cisco SPA301 or the Cisco SPA501G can be configured by using the IVR. See
Using IVR on IP Phones Without Screens
Network Address Translation (NAT) allows multiple devices to share a single,
public, routable, IP address to establish connections over the Internet. NAT is
present in many broadband access devices to translate public and private IP
addresses. For VoIP to co-exist with NAT, NAT traversal is required.
Not all service providers provide NAT traversal. If your service provider does not
provide NAT traversal, you have several options:
• NAT Mapping with Session Border Controller
• NAT Mapping with SIP-ALG Router
• NAT Mapping with a Static IP Address
• NAT Mapping with STUN
for more information.
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