Configuring SIP, SPCP, and NAT
Configuring the IP Phone Communications Protocol
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 140
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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
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