Polycom DOC2557A manual Rtm Isdn, 1-14

Chapter 1-Hardware Description

Table 1-5RMX 1500 Rear Panel - RTM IP 1500 Component Description

Item	Description
Standby button	Toggle button. Use this button to either perform
	Diagnostics or Software Recovery on the RMX.
	Short press (2 seconds) - MPMx Diagnostics.
	Long press - (10 seconds) Media and RTM IP 1500
	Software Recovery.

RTM ISDN 1500

The RTM ISDN 1500 connects directly to the built-in MPMx. The RTM ISDN card routes data between the MPMx card and components of the system, converts ISDN T1/E1 media to IP packets and provides connectivity to external ISDN networks.

The RTM ISDN card is installed on the rear panel of the RMX interfaces between the RMX unit and the ISDN/PSTN switch.

With the RMX 1500, you can either have a dedicated E1 or T1 Type Network Service. It is not possible to have a mixed E1 and T1 ISDN Network Service.

The RTM ISDN card contains four connections to which up to four E1 or T1 PRI lines can be connected as shown in Figure 1-4.

4 E1/T1 connections

Figure 1-4RMX 1500 RTM ISDN Rear Panel Layout

The RTM ISDN card supports up to 200 audio participants, regardless of whether the spans are E1 or T1.

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