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Page 16 of 64
Equipment specification and operation
Release Link Trunk
553-2681-100
Standard 5.00
Table 2
Meridian 1 tone interruptions with CAS
Tone
Listed Directory Number
Camp-on
Dial "0" recall
No-answer recall
Busy
Overflow
Hold confirmation, recall
Standard ringing
The maximum delay on an application of any of the CAS tones, subsequent
to detecting answer supervision from the Main CAS location, is 150 ms. A
break in the middle of a tone cycle is inhibited so that a complete tone is
always heard by the CAS attendant.
Flexible Tones and Cadences (FTC) adds many options for tones. See
Flexible Tone and Digit Switch cards description for complete information.
Various trunk types can be used to interface a Remote site to the Main site
when the CAS feature is required. One configuration of an RLT circuit is to
have either a 2-wire (QPC71) or a 4-wire (QPC237) TIE trunk at both the
Remote and Main locations, with a repeater facility between the two. Another
configuration is to have an NT8D15 E&M trunk card at the local location and
a QPC237 at the Remote location.
Alternatively, the Remote location can be equipped with a QPC250 RLT card
to interface with a QPC70 CO trunk card, or QPC450 CO/FX/WATS trunk
card. This application is limited to a maximum loop resistance of 1400 Ω.
August 1996
Cadence
100 ms of 480 Hz
100 ms of 440 Hz
100 ms of 480 Hz
100 ms on/off
100 ms on/100 ms off
100 ms on
300 ms on/off
0.5 s on/0.5 s off
0.25 s on/0.25 s off
0.05 s on/0.05 s off
2 s on/4 s off
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