4 Switch Interface Administration

Digital Interfaces

T1 A/B Robbed-bit E&M Protocol

Make sure that the switch to which the system is connected is programmed with the following options:

•The T1 interface uses wink start robbed-bit E&M signaling on a link using D4 framing with zero code suppression (ZCS).

•The E1/T1 interface outpulses dual tone multifrequency (DTMF) tones at 7 pulses per second when originating outbound calls and requires DTMF when taking inbound calls.

Accessing T1 A/B To access the T1 A/B Robbed-bit E&M menu:

Robbed-bit E&M

1

Start at the Digital Interfaces menu (Figure 86 on page 145) and select:

Menu

 

 

> T1 A/B Robbed-bit E&M

UCS 1000 R4.2 Administration 585-313-507

Issue 3 April 2000 150