Avaya Octel 200 Installation And Maintenance Manual page 920

17−2 Integration Volume
There are some configuration implications associated with the approach discussed above. For example, it is
still necessary that user mailboxes be configured with Attributes 6 and 15. As previously, attribute 6 allows
transfer to an extension when the mailbox greeting is on. Attribute 15 — Transfer to a Ringing Extension,
has traditionally been used to release the call from the port that has it unless the server detects a busy or fast
busy signal. Typically, that call would then forward back to another port. The alternative to releasing the
call was to supervise the transfer. Although in the QSIG integration the call is not actually released from the
port that answered it, Attribute 15 is still required to provide the functionality associated with an
unsupervised transfer. If Attribute 15 is not assigned, the caller will hear silence and the called party will
hear "tick...tick...tick...connecting."
.
Because the port is not placed on hold as a station on the PBX, the traditional "music-on-hold"
feature is not available.
It is not necessary to play the A" tone for forwarded calls (controlled by System Parameter 130). The "A"
tone is used in older integrations so that if a port initiates a call that is then forwarded back to the server, the
receiving port can be disconnected. Because the "forward back" scenario does not apply in the QSIG
integration, the "A" tone is not needed.
The "transient PBX" approach dictated by QSIG integration results in a significantly different Call
Processing Trace log. Each call in or out of the message server occupies a different port. For example, a call
transferred by the message server occupies two channels until the PBX optimizes the call path and releases
the voice server. Refer to the Troubleshooting and Maintenance section of this chapter for further detail.
OUTCALL IN A QSIG ENVIRONMENT
Outcall functions for message servers integrated using common channel signaling (DPNSS, ISDN, and
QSIG) operate differently than in other integrations. Differences include:
The F, E, and N characters used in off-site, alarm and/or network outcalls do not pertain in these
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environments. Including an F or an N in an outdial string will cause the outcall to fail. The E is
ignored. Valid digits in an outdial string of any kind include 1-9, * , #, and D. The characters P and T
are supported for network outdial strings and can be inserted anywhere.
The first D character in the outdial string is seen by the system as a delimiter. Any characters specified
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prior to that first D are outdialed immediately. Characters after the first D are sent only after the
connect message has been received by the CPU/CVL. The delimiter D and any subsequent Ds
introduce a delay in the outdial sequence; the length of the delay is based on the value of System
Parameter 28.
There is a difference in how the message server handles situations where the server (1) reconnects to a
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call after detecting a no-answer condition or (2) initiates a call and disconnects after detecting a
no-answer condition. In traditional integrations, Information Table Indexes 7 and 8 are used to define
how many rings indicate no-answer. With common channel signalling, a ring-no-answer is defined by a
time-out waiting for acknowledgment. Thus detection of a cycle of three rings that leads to a reconnect
or disconnect is functionally equivalent to a timeout. The value of the time-out is determined as
follows. Refer to the Configuration section in this chapter for instructions for determining ring cycles.
Application delays 53 — 56 or 61 — 68 are averaged to determine the "ring cycle" value. The
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application delay used depends on whether ringing is single or double-interrupted. These
application delays are typically used to define tone-on/tone-off events that detect ringing.
The value in Info Table Index 7 or 8 is multiplied by the "ring cycle" value to arrive at the
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time−out value.
.
Octel 200/300 S.4.1
Outcalls not associated with a particular user (e.g., alarm and network) use the value defined
in the Port Information Table. Message waiting outcalls (on-site and off-site) use the value
defined in Index 8 of the Information Table associated with the calling mailbox COS, while
transfers (from the auto-attendant or to personal assistance) use Index 7 of that table.
PB60019-01
Octel 200