AT&T 585-310-231 manual Voice Port Requirements

MERLIN LEGEND

Voice Port Requirements

The Intuity system voice ports must be connected to tip/ring ports on a Basic Telephone Module (BTM-012). The MERLIN LEGEND system must contain a ring generator for ringing the BTM ports on each carrier that has a BTM board.

There are two limitations on the number of Intuity voice ports that can be connected to the same BTM:

■Ring Blocking

A maximum of four ports on a BTM can be rung at any one time. Due to this limitation, a maximum of eight ports on a BTM can be used for Intuity voice ports.

■Touch-Tone Receivers (TTR)

Two TTRs are provided on each BTM. Unless additional TTRs are available, a maximum of four ports on a BTM can be used for Intuity voice ports. Additional TTRs are provided on 400 GS/LS/TTR, 400 LS/TTR and other circuit modules. Approximately one TTR is required for each two Intuity voice ports, but the level of system activity may make TTRs on other circuit modules unavailable for Intuity voice port use. Consult the MERLIN LEGEND Communication System documentation for more details.

As a general rule, use a separate BTM board for every four ports unless additional Touch-Tone receivers are available. Use a maximum of eight ports when additional Touch-Tone receivers are available.

Unused BTM ports may be used for single-line sets (SLS), fax machines, modems, and phantom stations (an assigned extension with no physical telephone set). The limitation is based on the number of ports that may require ringing at the same time. All unused ports can be used for devices that will never ring. The recommendations in Table 4-1should be followed for devices that may ring.

Table 4-1. BTM-012 Ringing Capacity

Intuity Voice Ports	Ringing SLS, Modems, FAX
8	0
7	0
6	1
5	2
4	2
3	3
2	3
1	4

4-2Issue 2.0 December 1995