Polycom CX5500 Administrator's Guide

Polycom CX5500 Unified Conference Station Administrator’s Guide 1.1.0
Polycom, Inc. 337
<SDP/>
The configuration parameters in the table Session Description Protocol Parameters is defined as follows:
Session Description Protocol (SDP) Parameters
Parameter
Permitted Values
Default
voIpProt.SDP.answer.useLocalPreferences
0 or 1
0
If set to 1, the phones uses its own preference list when deciding which codec to use rather than the preference
list in the offer. If set to 0, it is disabled.
voIpProt.SDP.early.answerOrOffer
0 or 1
0
If set to 1, an SDP offer or answer is generated in a provisional reliable response and PRACK request and
response. If set to 0, an SDP offer or answer is not generated.
Note: An SDP offer or answer is not generated if reg.x.musicOnHold.uri is set.
voIpProt.SDP.iLBC.13_33kbps.includeMode
0 or 1
1
If set to 1, the phone should include the mode=30 FMTP parameter in SDP offers:
If voice.codecPref.iLBC.13_33kbps is set and voice.codecPref.iLBC.15_2kbps is Null.
If voice.codecPref.iLBC.13_33kbps and voice.codecPref.iLBC.15_2kbps are both set, the iLBC 13.33 kbps codec
is set to a higher preference.
If set to 0, the phone should not include the mode=30 FTMP parameter in SDP offers even if iLBC 13.33 kbps
codec is being advertised. See <codecPref/>.
voIpProt.SDP.useLegacyPayloadTypeNegotiation
0 or 1
0
If set to 1, the phone transmits and receives RTP using the payload type identified by the first codec listed in the
SDP of the codec negotiation answer.
If set to 0, RFC 3264 is followed for transmit and receive RTP payload type values.
<SIP/>
The configuration parameters in the table Session Initiation Protocol Parameters is defined as follows.
Session Initiation Protocol (SIP) Parameters
Parameter
Permitted
Values
Default
voIpProt.SIP.acd.signalingMethod
1
0 or 1
0
If set to 0, the ‘SIP-B’ signaling is supported. (This is the older ACD functionality.)
If set to 1, the feature synchronization signaling is supported. (This is the new ACD functionality.)

Polycom CX5500 Specifications

General

Brand	Polycom
Model	CX5500
Category	Conference System
Language	English