Product Description
IP Office 8.1
© 2012 AVAYA All rights reserved.
Page 279
Issue 26.k.- (16 August 2012)
Public Voice Networking
The IP Office platform supports a range of trunks and signaling modes for connection to the public switched
telephone network (Central Office). Some of these lines are only available in certain territories; please check
with your distributor for local availability. Primary rate trunks are available with either a single (24/30 channels)
or dual trunk (48/60 channels).
ISDN Primary Rate (ETSI CTR4)
Provided by the IP400 PRI E1 and IP500 Universal PRI cards.
ISDN Primary Rate provides 30 x 64K PCM speech channels over an E1 circuit and one signaling channel.
Signaling Conforms to the ETSI Q.931 standard with Cyclic Redundancy error Checking (CRC).
The following supplementary services are supported:
·
Calling Line Identification Presentation (CLIP) provides the telephone number of the incoming call to
the IP Office.
·
Calling Line Identification Restriction (CLIR) prevents the telephone number of the IP Office being
presented on an outbound call.
·
Connected Line Identification Restriction (COLR) Inhibits the COLP service.
·
Direct Dialing In (DDI) where the exchange provides the last x digits of the dialed number on an
incoming call. This allows IP Office to route the call to different users or services.
·
Sub-addressing Allows the transmission/reception of up to 20 digits, additional to any DDI/DID or CLIP
information, for call routing and identification purposes.
ISDN Basic Rate (ETSI CTR3)
Provided by the IP400 Quad BRI and IP500 BRI cards.
ISDN Basic rate provides 2 x 64K PCM speech channels and one signaling channel using Q.931 signaling and
CRC error checking. Both point to point and point to multipoint operation is supported. Multipoint lines allow
multiple devices to share the same line; however point-to-point is the preferred mode.
Basic rate supports all the services that are supported on the primary rate version with the addition of
·
Multiple Subscriber Number. This service is usually mutually exclusive with the DDI/DID service and
provides up to 10 numbers for routing purposes, very similar to DDI/DID.
Additional ISDN features
The following ISDN features are supported by IP Office 4.0 and later on both PRI and BRI trunks. Note that
availability of these features is dependent on availability and support from the ISDN service provider, for which
there may be charges.
·
Malicious Call Identification – MCID
(2400, 4600, 5400, 5600, T3, T3 IP, 9500, 9600)
Short codes and button programming features are available so that users can trigger this activity at
the ISDN exchange when required. This feature is NOT available on standard ISDN DSS1 telephones.
·
Advice of Charge – AOC
(T3 digital and IP telephones only; Phone Manager)
Advice of charge during a call (AOC-D) and at the end of a call (AOC-E) is supported for outgoing ISDN
calls other than QSIG. The call cost is displayable on T3 telephones for call accounting purposes. The
IP Office allows configuration of call cost currency and a call cost mark-up for each user.
·
Call Completion to Busy Subscriber – CCBS
(2400, 4600, 5400, 5600, T3, T3 IP, 9500, 9600, DECT telephones; Phone Manager)
CCBS can be used where provided by the ISDN service provider. It allows a callback to be set on
external ISDN calls that return busy. It can also be used by incoming ISDN calls to a busy user. This
feature is NOT available on standard ISDN DSS1 telephones.
·
Partial Rerouting – PR
(2400, 4600, 5400, 5600, T3, T3 IP, 9500, 9600, DECT telephones; Phone Manager)
When forwarding a call on an ISDN channel to an external number using another ISDN channel, partial
rerouting informs the ISDN exchange to perform the forward, thus freeing the channels to the IP
Office. This feature is NOT available on standard ISDN DSS1 telephones and it is NOT supported on
QSIG.
·
Explicit Call Transfer – ECT
(The normal usage of this feature is by a third party application)
ECT is supported on the S0 interface. A Call to an S0 Endpoint can be transferred to any other device
such as an analog, digital or IP endpoint or to any trunk. The normal usage of this feature is by a third
party application connected via one or more S0 interfaces to IP Office. One example is the
VoiceDirector, an automatic call assistant.
