Siemens HiPath 4000 User Manual download pdf (Page 4)

IT Architecture

Access Point Emergency

Concept

This is a survivability concept for IP-based

access points. An AP 3700 IP can be

equipped with an optional control unit

known as an emergency unit. If the central

IT switch is not available or an IP connection

cannot be set up to this switch, the emer-

gency unit assumes control of its own ac-

cess point and other access points that do

not have their own control unit. The IP infra-

structure between the access points must

be intact for this to happen. However, all AP

3700 IPs connected to an IT switch (up to

83) can be equipped with a survivability

unit. This way, you achieve optimum securi-

ty for all access points connected to the sys-

tem.

Signaling and Payload

Survivability

The optional signaling and payload surviv-

ability function guarantees the highest level

of availability for a HiPath 4000 system with

IP-based access points. The PSTN can be

used as a backup network for both the sig-

naling and payload path if the IP network

fails or does not provide the quality re-

quired. The available PSTN accesses are

used for the Payload Survivability. The Pay-

load Survivability path cannot be selected

automatically if no other connections are

possible in the IP network direction.

HiPath QoS Data Collection

The HG 3500 IP gateways support HiPath

QoS data collection. This means that LAN

data (for example, jitter, delay, packet loss,

buffer overflows/underflows, threshold vio-

lations) is sent to a central unit (QCU QoS

data collection unit). This data can then be

used to quickly and efficiently analyze any

IP network problems that may occur.

ComScendo on a Button Suite

In conjunction with a system phone (e.g.

OpenStage) or an optiClient, HiPath Com-

Scendo on a Button Suite provides new

kinds of features to increase workplace pro-

ductivity. The functions can be set up on the

end device to be called up either by sepa-

rate keys or via a menu that is called up via

a single application key. The connection be-

tween HiPath 4000 and the corporate direc-

tory is generated by HiPath CAP (Common

Application Platform – SW is supplied).

● EasyLookup: Simple access to the corpo-

rate directory (LDAP) via search parame-

ters, output of results on the display and

direct dialing of the displayed phone

number.

● EasySee: Output of information from the

corporate directory as PhoneCard on the

PC.

● EasyMail: Opening of an e-mail window

on the PC with the e-mail addresses of all

contacts.

● EasyShare: Starting Microsoft Netmeet-

ing on the PCs of all known contacts (in

the directory).

HiPath Meet-Me

Conference Server (MMCS)

Thanks to MMCS, all participants of a con-

ference can dial in regardless of their cur-

rent location and their infrastructure. All

participants simply call the same number

and are directly connected with each other

– without having to take the trouble of hav-

ing to call all participants. MMCS offers

1,000 meet-me conference rooms with up

to 30 participants. Design and editing of

personal conferences is performed by the

employees themselves, with settings for

regular conferences being saved.

Summary of Main Features

● Single system

– Full HiPath 4000 feature set available

for all IP-distributed subscribers

– Central administration for the entire

distributed IP architecture

– Scalable, large capacity for HiPath

4000

– Up to 15 directly connected access

points (AP 3300 or AP 3700)

– Up to 83 additional IP-based access

points (AP 3300 IP or AP 3700 IP)

– Up to 12,000 stations per system

– Up to 100,000 in HiPath 4000 net-

works

● Resilience options for high availability

– Access point emergency concept (sur-

vivability of IP access points): 40 IP-

based access points per emergency

unit, up to 83 AP 3700 access points

each with its own emergency unit

– HG 3530 standby board

– Signaling survivability

– Payload survivability

● High voice quality (for example, via em-

bedded echo cancellation and IP payload

switching)

●

Management support (for example,

SNMP)

● Quality of service support in IP networks

by prioritizing traffic.

– IEEE 802.1 p/q and

–IETF DiffServ

● Maximum number of simultaneous con-

nections per HG 3500 in the IP network:

120

Benefits

● Reduction in network infrastructure

costs ("IP convergence") for

– Investments,

– Administration,

– Carrier fees.

● Reduced administration and application

costs due to:

– Single system,

– Central administration and applica-

tions.

● More usage options for features and ap-

plications (single system)

● Increased choices thanks to IP-based ac-

cess points with regard to:

–Number,

– Scalability,

– Resilience

● Leveraging the benefits of an IP infra-

structure without sacrificing feature

richness, availability, and reliability.

● Features for increasing workstation pro-

ductivity (for example, ComScendo on a

Button Suite)

● More cost-effective connection to an IP

carrier (SIP-based)

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