Xref: utzoo comp.os.vms:9794 comp.dcom.modems:2828
Path: utzoo!utgpu!attcan!uunet!ccicpg!arnold!dave
From: dave@arnold.UUCP (Dave Arnold)
Newsgroups: comp.os.vms,comp.dcom.modems
Subject: VMS modem woes
Message-ID: <227@arnold.UUCP>
Date: 3 Nov 88 04:48:43 GMT
Organization: Home, Mission Viejo, Ca
Lines: 48

HELP!?

Scenario:

A NEC 2400 modem (In Hayes emulation mode) connected to a uVax port.
Normal terminal characteristics for dialup support:
	/MODEM/AUTOBAUD/HANGUP...
Modem set-up to send responses codes (I need these for outgoing
call progress monitoring---The application is a UUCP clone VMS).

All modem control signals connected straight through:
	DCD,DTR,DSR,RING... (I really think the cable is good)

Problem:

DTR initially asserted.
Incoming call comes in and:

1) DTR high
2) modem asserts RING
3) modem sends "RING" text to uVax port (NO DCD)
4) Transmit and Receive leds flash on my break out box several times
5) uVax drops DTR
6) goto 1

THE MODEM NEVER ANSWERS THE PHONE BECAUSE THE VAX KEEPS DROPING
DTR!

NOTE: If I ATQ1 the modem answers correctly, but I need ATQ0 for
outgoing call progress monitoring.

Questions:

Shouldn't the uVax be ignoring these "Result codes" when there is
no DCD?

What are the VAX and modem saying to each other when the Transmit
and Receive lights flash?

How can I get a Hayes modem to work bidirectionally?

Dave

P.S.  I have tried TTY_DIALTYPE=1---No go.
-- 
Dave Arnold (dave@arnold.UUCP)
Work: Volt Delta Resources     Phone: (714) 921-7635
Home: 26561 Fresno street,  Mission Viejo, Ca  92691