Reliant Octel 300 Spezifikationen PDF herunterladen (Seite 142)

IP Office Product Description

IP Office 4.2

Page 142

Issue 18.b.- (08 July 2008)

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.

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Reliant Octel 300 Spezifikationen Seite 142