GAI-Tronics 69320-001 Voice Network Adapter (VNA) - Manual (Page 9)

Pub. 42004-681L2A
Model 69320-001 Voice Network Adapter Page: 9 of 14
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06/04
Changing to a 69320-001 VNA from a 69266-001 T1 Interface
N OTE : We recommend upgrading all older Access Panel Interfaces (APIs) (Models 69257-001, 69257-
002, and 69257-003) to the most recent version (69257-004 or later) when upgrading a 69266-001 T1
Interface to a 69320-001 VNA. See the FAQ section for more information.
The 69266-001 T1 Interface uses a different switch and jumper collection than the VNA. The following
text states how to convert the T1 Interface switch and jumper setting to the VNA switch and jumper
settings.
The 2xx/3xx Address (P2) shorting clip should be set to the 2xx position if the shorting clip on J1 of the T1
Interface is closer to the back of the T1 Interface. Otherwise, set to the 3xx position when the shorting clip
on J1 of the T1 interface is closer to the front of the T1 Interface.
N
OTE : The silkscreen for J1 on the T1 interface should be blacked out; if not blacked out, then that
silkscreen shows the 2xx / 3xx position reversed from the actual meaning of J1.
The Board Address (S2) rotary switch on the VNA should match the Board Address rotary switch on the T1
Interface.
The Board Identification (S1) rotary switch on the VNA should match the Board Identification rotary
switch on the T1 Interface.
Internal DIP switch #1 (SW1) (ST-Bus Clock Master) should be set to CLOSED if J3 of the T1 Interface is
set to ING (ignore – shorting clip towards front). Otherwise, set to OPEN when J3 of the T1 Interface is set
to GEN (generate – shorting clip towards back).
Internal DIP switch #2 (SW1) (T1 Clock Master) should be set to CLOSED if J4 of the T1 Interface is set to
GEN (generate – shorting clip towards front). Otherwise, set to OPEN when J4 of the T1 Interface is set to
REC (receive – shorting clip towards back).
Internal DIP switch #3 (SW1) (T1 Synchronous) should be set to OPEN.
Internal DIP switch #4 (SW1) (E1 Select) should be set to OPEN.
Internal DIP switch #5 (SW1) (Sampling Rate Select) should be set to OPEN.
Internal DIP switch #6 (SW1) through #8 (Reserved) should be set to OPEN.