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Configuring SIP, SPCP, and NAT
Configuring the IP Phone Communications Protocol
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide
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Configuring the IP Phone Communications Protocol
By default, the phone automatically detects the protocol and the Unified
Communications device.
Cisco SPA500 Series IP Phones can be used as part of a Cisco Unified
Communications System that uses Smart Phone Control Protocol (SPCP), also
known as Skinny Call Control Protocol (SCCP), to manage a voice network. Or the
phones can be configured to use Session Initiation Protocol (SIP), an IETF-defined
signaling protocol that controls voice communication sessions in an IP network.
Use Auth ID
Enables the authentication ID and password for SIP
authentication. To enable this feature, select
yes
.
Otherwise, select
no
. Defaults to no.
Auth ID
Authentication ID for SIP authentication. Defaults to blank.
Mini Certificate
Base64 encoding of a mini-certificate concatenated with
the 1024-bit public key of the certificate authority (CA)
signing the mini-certificate of all subscribers in the group.
Defaults to blank.
SRTP Private Key
Base64 encoding of the 512-bit private key per
subscriber for establishment of a secure call. Defaults to
blank.
Reversed
Authentication
Realm
The IP address for an authentication realm other than the
proxy IP address. The default value is blank; the proxy IP
address is used as the authentication realm.
The parameter for extension 1 appears as follows in the
phone configuration file:
<Reversed_Auth_Realm_1_ ua="na">
</Reversed_Auth_Realm_1_>
Parameter
Description