
Polycom RMX 1500/2000/4000 Getting Started Guide for Audio Only
3-37Extension/
Identifier String
Dial-out participants that connect to an external device 
such as Cascaded Links or Recording Links may be 
required to enter a conference password or an 
identifying string to connect. Enter the required string 
as follows:
[p]…[p][string]
For example: pp4566#
p - optional - indicates a pause of one second before 
sending the DTMF string. Enter several concatenated 
[p]s to increase the delay before sending the string. 
The required delay depends on the configuration of 
the external device or conference IVR system.
String - enter the required string using the digits 0-9 
and the characters * and #. The maximum number of 
characters that can be entered is identical to the 
H.323 alias length.
If the information required to access the device/
conference is composed of several strings, for 
example, the conference ID and the conference 
password, this information can be entered as one 
string, where pauses [p] are added between the 
strings for the required delays, as follows:
[p]…[p][string][p]…[p] [string]... 
For example: p23pp*34p4566#
The RMX automatically sends this information upon 
connection to the destination device/conference. The 
information is sent by the RMX as DTMF code to the 
destination device/conference, simulating the 
standard IVR procedure.
Table 3-6 New Participant – General Properties (Continued)
Field Description