User's Manual

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BreezeACCESS 4.0 Operations and Administration
Manual Revision: 1.01
Default value: 0.
" International Prefix – Defines the second digit in the two
digits string indicating an international call.
Valid values: One phone key-pad digit (0-9, *, #, A, B, C, D)
and X (no prefix).
Default value: 0.
! Registration TTL – Defines the registration Time To Live.
Registration is the process by which an endpoint informs the
Gatekeeper of its Transport Addresses and alias addresses.
Registration must occur before any calls are attempted and may
occur periodically as necessary (for example, at endpoint power-up).
After Registration process has finished an endpoint will no longer
send Registration Request (RRQ) messages. So, GK may become
unavailable for the endpoint after its reset. To exclude this
possibility a keep-alive mechanism should be applied.
An endpoint's registration with a Gatekeeper may have a finite
lifetime. An endpoint may request a timeToLive in the RRQ
message to the Gatekeeper. The Gatekeeper may respond with an
RCF containing the same timeToLive or a shorter timeToLive.
After this time, the registration shall be expired. The timeToLive is
expressed in seconds. Prior to the expiration time, the endpoint may
send an RRQ message having the keepAlive bit set. The keep-alive
RRQ resets the time to live timer in the Gatekeeper, allowing the
registration to be extended. After the expiration time, the endpoint
must re-register with a Gatekeeper using a full RRQ message.
Valid values: 0 (the keep-alive mechanism is not activated), 1-65535
(seconds)
Default value: 0
! DTMF Relay – Selects the method of handling DTMF signals. DTMF
input may be transferred through a network in-band by RTP
payloads, or using DTMF relay. The use of DTMF relay is preferred
as it overcomes the problems of RTP packet loss and jitter. When
DTMF relay is used, DTMF digits are transferred using H.245
protocol messages (standard), or Q.931 protocol message
(proprietary). The DTMF relay can handle all phone-pad digits (0-9,
A-D, *, #) and Hook-Flash (!).
The following options are available:
" Disable – DTMF tones are transferred in band (through the
voice codec using the RTP protocol)
" Enable – DTMF signals are relayed via H.245 sessions. If
Fast Start is enabled, a H.245 session will be forced upon
detecting DTMF signals.
" Enable Proprietary – If Fast Start is enabled, DTMF signal
will be relayed via Q.931 sessions. If Fast Start is disabled,
DTMF signal will be relayed via H.245 sessions.