elmeg T444, T484 User Manual

el meg Rou ter

English

el meg T444 el meg T484

Declaration of conformity and CE marks

This de vi ce meets the re qui re ments of the fol lo wing EC di rec ti ve R&TTE 6/3/EG:

»Di rec ti ve 1999/5/EC of the Eu ro pe an Par lia ment and of the Coun cil of 9 March 1999 on ra dio equip ment and te le com mu ni ca tions ter mi nal equip ment and the mu tu al re co gni ti on of their con for mi ty«.

You can also re quest this EC de cla ra ti on of con for mi ty at the fol lo wing In ter net URL: http://www.bin tec-el meg.com

The was te con tai ner sym bol with the "X" through it on the de vi ce in di ca tes that the de vi ce must be dis po sed of se pa ra te ly from nor mal do mes tic was te at an ap pro pria te was te dis po sal fa ci li ty at the end of its use ful ser vi ce life. You will find ad di tio nal in for ma ti on on an in di vi du al re tur ning of the old ap pli an ces un der www.bin tec-el meg.com.

Re prin ting of this do cu ment, even ex cerpts, is per mit ted only with the ex press con sent of the pub lis her and with pre ci se sour ce in for ma ti on, re gard less of the me dia used (me cha ni cal or elec tro nic).

Functi on des crip tions in clu ded in this do cu men ta ti on which re fer to soft wa re pro ducts of ot her ma nu fac tu rers are ba sed on the soft wa re used and va lid at the date the do cu men ta ti on was pre pa red or pub lis hed. The pro duct and com pa ny na mes used in this do cu men ta ti on may be pro tec ted by tra de marks.

Table of contents

In tro duc ti on................................................1

Rou ter of the PABX el meg T444 / el meg T484 ....................................1

What is a rou ter? ......................................................1

Rou ter of the PABX sys tem ................................................1

Which In ter net con nec tions are sup por ted? .......................................1

Di al-in in to the LAN (RAS)................................................2

RAS Call back:........................................................2

DHCP ser ver and IP ad dress al lo ca ti on ..........................................3

Di rect con nec ti on (DHCP) ................................................3

De fault set ting of the PABX ...............................................3

De fault IP ad dres ses for the lo cal area net work ......................................3

What are IP ad dres ses and sub net work masks ......................................4

Ex am ple with this PABX:..................................................4

Rou ter functions ......................................................4

Au to ma tic In ter net ac cess, fall back ............................................4

Short Hold ..........................................................4

Dy na mic ISDN........................................................4

DHCP ser ver .........................................................5

DNS ser ver ..........................................................5

DNS-Proxy ..........................................................5

Dy na mic DNS ........................................................6

Rou ter con trol via sys tem pho ne .............................................8

Sta tus dis play CAPI / TAPI in the Con trol Cen ter .....................................8

Con fi gu ra ti on ex am ples.........................................9

Ad dress as signment by DHCP -Re com men ded con fi gu ra ti on - (De fault setting)................9

Things to note for this con fi gu ra ti on. ...........................................9

Ad dress as signment wit hout DHCP (set / mi xed IP ad dres ses) ............................11

Things to note for this con fi gu ra ti on. ..........................................12

LAN-Client (PC) Con fi gu ra ti on .............................................12

PC set tings in Wind ows ope ra ting sys tem .......................................12

Sam ple con fi gu ra ti on of a net work with mi xed ad dress as signment.......................14

Sam ple con fi gu ra ti on of a net work with set ad dress as signment ............................15

Che cking the LAN clients (PCs) ............................................16

Con fi gu ra ti on for Wind ows 98SE/ME/2000/XP ....................................16

Che cking the TCP/IP Con fi gu ra ti on.................................17

Wind ows 98SE / ME....................................................17

Wind ows 2000 .......................................................17

Wind ows XP ........................................................19

Con fi gu ring In ter net ac cess on a PC..........................................20

In ter net Ex plo rer set tings / Wind ows In ter net op tions .................................20

Con fi gu re fi re wall fil ters........................................22

Ba sic in for ma ti on about fi re wall con fi gu ra ti on ....................................22

Four pla ce hol ders are pro vi ded to achie ve an ab strac ti on when de fi ning the fil ters: .................23

You can con fi gu re the fol lo wing pa ra me ters: ......................................23

Fil ter Wi zard .......................................................25

Ga ming - Fil ter .......................................................27

Real play er - Fil ter .....................................................28

Me dia play er - Fil ter ....................................................28

Fil ter up da te........................................................28

In tro duc ti on

Rou ter of the PABX el meg T444 / el meg T484

The PABX el meg T444 / el meg T484 is equip ped with an in te gra ted rou ter. You can pro vi de ac cess to the In ter net and net work se ve ral PC via this rou ter.

What is a rou ter?

A rou ter al lows LAN clients (com pu ters, PC wit hin a net work) of one net work (LAN) to ob tain ac cess to a dif fe rent net work, for ex am ple In ter net. Ac cess to the In ter net is made avai la ble by va ri ous In ter net ser vi ce pro vi ders (ISP).

In this pro cess, the rou ter se ar ches for a path on which data can be ex chan ged bet ween the LAN clients in the lo cal net work and the In ter net. Lin king to the In ter net can be car ried out via an xDSL and / or an ISDN con nec ti on.

Rou ter of the PABX sys tem

The PABX sys tem rou ter is equip ped with a WAN/xDSL and a LAN port). The PABX sys tem is con nec ted to anot her net work, for ex am ple the In ter net, via the WAN/xDSL port. You can hook up a DSL or ca ble mo del for con nec ti on to the In ter net.

The LAN ports are for your lo cal net work. Here, you can di rect ly con nect up to two PCs equip ped with built-in net work cards. If you wish to net work more than two PCs you can do this using an ad di tio nal HUB / Switch, Ho mePN (op tio nal mo du le, not in clu ded in stan dard supp ly sco pe of sys tem), or a USB port.

LAN1 sets it self au to ma ti cal ly (from 10 Mbit/s half-du plex up to 100 Mbit/s full du plex) to the ma xi mum data trans fer rate of the re mo te lo ca ti on (PC).

The se PCs are also part of your lo cal net work and can, for ex am ple, ex chan ge fi les or take ad van ta ge of the In ter net con nec tions via the rou ter. All LAN clients that are lin ked are in te gra ted into the lo cal net work via the TCP/IP pro to col.

Furt her PCs can be lin ked to your net work via RAS- ac cess. Here, the IP ad dress is al ways as sig ned by the te le pho ne sys tem, even when the DHCP ser ver is de-ac ti vat ed. Un der “Ad dress as signment” in the con fi gu ra ti on pro gram you can de-ac ti va te the DHCP ser ver and in put the star ting ad dress for RAS. The fol lo wing 11 IP ad dres ses are then au to ma ti cal ly re ser ved for RAS.

Using the Re mo te Ac cess Ser ver (RAS) a field re pre sen ta ti ve, for ex am ple, can call into the lo cal net work from an ex ter nal lo ca ti on and then via the lo cal net work ac cess the In ter net. Ac cess from an ex ter nal lo ca ti on is only pos si ble via an ISDN con nec ti on. Ex ter nal ac cess is pro vi ded with user-name and pass word pro tec ti on. If the call is made from an ex ter nal lo ca ti on only, the pho ne num ber can also be mo ni to red as an ad ded pro tec ti on fea tu re. Note that this ac cess por tal is not pro tec ted by a fi re wall!

Note Plea se note the furt her in struc tions gi ven in the operator’s ma nu al of the PABX sys tem for con nec ting a pcs.

Which In ter net con nec tions are sup por ted?

You can set up a con nec ti on to the In ter net with your PABX sys tem as fol lows:

· Dial-up con nec tions via ISDN (using PPP pro to col, with one or two ISDN B chan nels, i.e. at 64 kbit/s or 128

kbit/s). The se ty pes of con nec tions re qui re ac cess data with the num ber to be di aled, the user name and pass word and, in some ca ses, ot her in for ma ti on such as the IP ad dress of the name ser ver and any in for ma ti on about the data com pres si on method that is used (VJH).

· Using xDSL (for ex am ple ADSL - T-DSL) in con juncti on with a DSL mo dem that is com pa ti ble with your

ISP via PPPoE. The se con nec tions re qui re your user name and pass word as access data.

Rou ter of the PABX el meg T444 / el meg T484 In tro duc ti on

· Using xDSL (for ex am ple: SDSL) in con juncti on with a DSL mo dem that is com pa ti ble with your ISP with a

set, pub lic IP ad dress. The se con nec tions re qui re the pub lic IP ad dress that you have been as sig ned, the IP ad dress of the next gate way (next hop) and the IP ad dress for the name ser ver of your provider.

· Tun ne ling. Here, data pa ckets of one pro to col are pa cked into the shell of a dif fe rent pro to col to rou te them

on to the In ter net. At the re ci pient the shell is then re mo ved and the data pa cket rou ted on with the ori gi nal pro to col. This tun ne ling is used to over co me in com pa ti ble net works, or when ta king into con si der ati on se cu ri ty and cost aspects (for ex am ple PPTP). Nor mal ly, you only need your user name and pass word as ac cess data. In di ca te all the data that is also spe ci fied to you by your pro vi der (for example, number, IP address and DNS server.

The ISP that you wish to use for your In ter net con nec tions is set in the con fi gu ra ti on of the PABX sys tem. You can con fi gu re up to 10 ISPs. You can then de fi ne furt her set tings for each ISP, such as user name, pass word, pho ne num ber, etc.. You can also de fi ne whet her the con nec ti on to the In ter net is to be set up au to ma ti cal ly (de fault set ting) and that the next ISP in your list is to be se lec ted once the con nec ti on has been estab lis hed (fall-back).

When the PABX sys tem rou ter re cei ves the com mand to estab lish an In ter net con nec ti on this con nec ti on is set up using the first ISP in your list. If the con nec ti on is set up suc cess ful ly all of the clients in your net work can ac cess the In ter net. If the In ter net con nec ti on is no lon ger nee ded (inac ti vi ty) it is ter mi na ted af ter a de fi ned time.

If an In ter net con nec ti on can not be set up using the se lec ted ISP an at tempt is made to estab lish the con nec ti on using the next ISP in your list (fall-back).

When an In ter net con nec ti on is ter mi na ted, the first ISP in the list is used when the next con nec ti on at tempt is in iti al ly car ried out.

Note For more in for ma ti on about con fi gu ring ISPs and estab lis hing an in ter net con nec ti on, re fer to the operator’s ma nu al of your PABX.

Note If “hubs” are in stal led in your net work, for ex am ple, or if a con nec ti on to the In ter net still exists, data pa ckets may con ti nue to be sent to the rou ter and the con nec ti on can not be ter mi na ted.

Di al-in in to the LAN (RAS)

Using the Re mo te Ac cess Ser ver (RAS) a field re pre sen ta ti ve, for ex am ple, can call into the lo cal net work from an ex ter nal lo ca ti on and then via the lo cal net work ac cess the In ter net. Ac cess from an ex ter nal lo ca ti on is also pos si ble via an ISDN con nec ti on. Ex ter nal ac cess is pro vi ded with user-name and pass word pro tec ti on. If the call is made from an ex ter nal lo ca ti on only, the pho ne num ber can also be mo ni to red as an ad ded pro tec ti on fea tu re. Ac cess can be en ab led for up to 8 users. A Wind ows en ab le (ac cess to com pu ter, fi les or prin ters) and In ter net en ab le can also be con fi gu red for each user.

A PC that di als into the lo cal net work via RAS is au to ma ti cal ly as sig ned an IP ad dress by the in te gra ted DHCP ser ver.

RAS Call back:

If you do not want to be char ged for con nec tions wit hin your com pa ny net work you can con fi gu re the RAS con nec ti on as an au to ma tic call-back. For this, a brief con nec ti on is set up to the com pa ny net work (for which you are char ged) that then in itia tes a call-back. The PABX sys tem at your com pa ny then calls you back and you are not char ged for the en suing con nec ti on time. You can en ter a num ber for the cor re spon ding RAS con nec ti on in the con fi gu ra ti on. Au to ma tic call-back is then only pos si ble from this num ber. If you do not en ter a num ber here, the au to ma tic call-back can be made from any num ber.

In tro duc ti on Di al-in in to the LAN (RAS)

DHCP ser ver and IP ad dress al lo ca ti on

PCs can be pro vi ded with a ma jor por ti on of the con fi gu ra ti on re qui red for LAN and In ter net ac cess via the DHCP (Dy na mic Host Con fi gu ra ti on Pro to col). The DHCP ser ver in te gra ted into the PABX is ca pa ble of supp ly ing cor re spon ding con fi gu ra tions to up to 100 PCs (clients). IP ad dres ses are dy na mi cal ly al lo ca ted to the clients. The DHCP ser ver task of the PABX sys tem is ac ti vat ed in the in iti al sta tus of the PABX.

You can con fi gu re the in te gra ted DHCP ser ver un der »Net work ad dress al lo ca ti on«.

You can con fi gu re the first IP ad dress as sig ned by the DHCP ser ver. The re qui red num ber of IP ad dres ses is as sig ned to the PCs (DHCP clients) in as cen ding or der. Ele ven ad di tio nal IP ad dres ses for the DHCP ser ver are al ways re ser ved for PCs that are in te gra ted through RAS (re mo te ac cess ser ver) into the lo cal net work. If the in te gra ted DHCP ser ver is ac ti vat ed the 11 IP ad dres ses which come af ter the con fi gu red DHCP ad dress ran ge are used for RAS clients. When the DHCP ser vers are de-ac ti vat ed the 11 IP ad dres ses that come af ter the set DHCP start ad dress will be used for RAS clients.

Di rect con nec ti on (DHCP)

This set ting is used to uti li ze a di rect WAN con nec ti on with au to ma tic al lo ca ti on of the IP ad dres ses via DHCP. In this case the IP ad dress is not as sig ned by your PABX sys tem rou ter, but by the net work in which the rou ter is in te gra ted. The rou ter DHCP must be de-ac ti vat ed in the con fi gu ra ti on for this.

De fault set ting of the PABX

De fault IP ad dres ses for the lo cal area net work

In its ba sic set ting you can use your PABX sys tem as a rou ter for In ter net ac cess for your lo cal net work. You have to de fi ne (when con fi gu ring the PABX) the In ter net ser vi ce pro vi der that you wish to use.

The IP ad dres ses for your lo cal area net work are then dis tri bu ted as fol lows:

192.168.1.1 to

192.168.1.49

Free ly as sig na ble IP ad dres ses as for ex am ple for LAN clients with a fi xed IP ad dress

192. 168. 1. 50 to

192.168.1.69

IP ad dres ses that are al lo ca ted to cor re spon ding LAN clients by the PABX sys tem. (Num ber of DHCP clients: 20)

192.168.1.70 to

192.168.1.80

Re ser ved IP-ad dres ses (11) RAS. The se ad dres ses must al ways re main re ser ved and may not be as sig ned as set IP addresses.

192. 168. 1. 81 to

192.168.1.249

Free ly as sig na ble IP ad dres ses as for ex am ple for LAN clients with a fi xed IP ad dress

192.168.1.250 IP ad dress for the PABX

192.168.1.251 to

192.168.1.254

Free ly as sig na ble IP ad dres ses as for ex am ple for LAN clients with a fi xed IP address

Note Plea se note that each IP ad dress can only be as sig ned once. The first and last IP ad dress for a net work may not be as sig ned to LAN clients. In this ex am ple: 192.168.1.0 and 192.168.1.255.

Ex am ple for the hint:

255.255.255.0 Sub net mask for all com po nents on the net work (PABX, LAN clients,.. . )

192.168.1.250 IP ad dress for the gate way (PABX)

192.168.1.250

Di rect con nec ti on (DHCP) In tro duc ti on

IP ad dress for the DNS ser ver (PABX). The PABX sys tem also acts as a DNS proxy in pla ce of the ISP DNS ser ver.

What are IP ad dres ses and sub net work masks

With the in iti al set tings IP ad dres ses and sub net work masks are al rea dy set for the PABX sys tem rou ter. Both of the se va lu es are each 4 by tes in length.

IP ad dress: 192.168.1.250

Sub net mask: 255.255.255.0

The IP ad dress is an ad dress that is re ser ved for pri va te lo cal net works.

The sub net work de fi nes that this is a Class C net work in which up to 254 LAN clients can be lin ked. Using the sub net work mask an IP ad dress can be di vi ded into the net work ad dress and the host ad dress (ad dress of the PC).

Ex am ple with this PABX:

IP ad dress of the PABX:

192.168.1.250

IP net mask for the PABX:

255.255.255.0

Net work part of the IP ad dres ses:

192.168.1.xxx

Host part of the ad dress: x.x.x.250

First usa ble IP ad dress:

192.168.1.1 (net mask: 255.255.255.0)

Last usa ble IP ad dress:

192. 168. 1. 254 (net mask: 255.255.255.0)

You can as sign the avai la ble IP ad dres ses to the in di vi du al LAN clients ma nu al ly, or have them as sig ned by the PABX sys tem via DHCP. No IP ad dress may be used si mul ta ne ous ly by more than one client ho we ver. With re gard to the ex am ple gi ven abo ve this me ans that the ad dress 192.168.1.250 may not be al lo ca ted again, as it is al rea dy being used by the PABX sys tem.

The net work part of the IP ad dress may not be chan ged, as ot her wi se the LAN clients would not all be lo ca ted wit hin the same IP net work. A PC with the IP ad dress 192.168.2. 1 is lo ca ted in a dif fe rent net work. A PC from the PABX net would not be able to lo ca te this ot her PC if it is not wit hin its own net work. In ad di ti on, the same sub net work mask must also be en te red at all LAN clients lo ca ted wit hin the same net work.

Rou ter functions

Au to ma tic In ter net ac cess, fall back

Se ve ral ISPs (ISP – In ter net Ser vi ce Pro vi der) can be set up in the PABX. Con nec ti vi ty to the In ter net is pro vi ded via the WAN port (e.g. DSL port), or via an ISDN port. If re qui red, con nec ti on to the In ter net can be set up au to ma ti cal ly. If your se lec ted ISP is not avai la ble, the next ISP in the list will be se lec ted au to ma ti cal ly.

Short Hold

Short Hold me ans that the PABX sys tem ter mi na tes the In ter net con nec ti on au to ma ti cal ly af ter a con fi gu ra ble time pe ri od when the re is no ex chan ge of data from/to the In ter net (inac ti vi ty). You can set this time se pa ra te ly for each ISP that you have con fi gu red. This can re sult in in crea sed con nec ti on costs with fre quent, short ex cur sions into the In ter net, for ex am ple for pi cking up e-mails, as the con nec ti on is al ways main tai ned for the du ra ti on of the set hol ding time.

Dy na mic ISDN

Hig her data trans fer ra tes can also be achie ved for In ter net ac cess via the ISDN con nec ti on by bund ling the two B chan nels for the con nec ti on. If an In ter net con nec ti on with chan nel bund ling is ac ti ve and a B chan nel is nee ded for te le pho ny or fax mes sa ges, one B chan nel is dis con nec ted from the In ter net con nec ti on. On com ple ti on of the voi ce

In tro duc ti on Rou ter functions

con nec ti on the B chan nel re verts au to ma ti cal ly to use for the In ter net con nec ti on. This functi on is avai la ble for in co ming and out going voi ce links.

This per for man ce fea tu re re qui res that the ISDN Speed Ma na ger be in stal led, or that In ter net ac cess is made via the rou ter! The Speed Ma na ger is in clu ded in the T-On li ne in stal la ti on.

Completion of call to busy subscriber:

You can not be rea ched by an ex ter nal te le pho ne call when you are sur fing the In ter net and are using two B chan nels for downloa ding. As sig na ling of a furt her call is made via the D chan nel, your te le pho ne sys tem has the ca pa bi li ty of spe ci fi cal ly de-ac ti va ting one B chan nel (de pen ding on cur rent set tings) so that you can take a call. You can de fi ne the fol lo wing set tings in the PC Con fi gu ra tor.

Rejecting a call:

The cal ler will hear the busy sig nal and both B chan nels re main ac ti ve.

Internal MSN extension number:

One B chan nel is de-ac ti vat ed (the call brief ly he ars mu sic on hold, see also Page ) and the call is sig na led at the sub scri ber en te red un der »In ter nal num ber«. This ter mi nal de vi ce may not be lo ca ted on the same ISDN bus or at the same USB port as the PC.

Forwarding (Call Deflection) to an external extension number :

One B chan nel is de-ac ti vat ed and the call sig na led at the sub scri ber en te red un der »Ex ter nal num ber«. You can also have the call for war ded to an ex ter nal sub scri ber by the ex chan ge, al lo wing both B chan nels to re main ac ti ve. Calls can also be trans fer red (for ex am ple for T-Net Box or cell pho ne) wit hout a B chan nel of the te le pho ne sys tem being al lo ca ted.

Normal call distribution:

One B chan nel is de-ac ti vat ed and the call sig na led at the sub scri ber en te red un der »Call al lo ca ti on« for the »Ex ter nal num ber«.

Dynamic ISDN for all outgoing calls

You can not make an out si de call if you are sur fing in the In ter net whi le using two B chan nels for downloa ding. Ho we ver, de pen ding on the PC con fi gu ra ti on, your te le pho ne sys tem does have the ca pa bi li ty to spe ci fi cal ly de-ac ti va te one B chan nel so that you can make calls whi le con nec ted to the In ter net.

DHCP ser ver

PCs can be pro vi ded with a ma jor por ti on of the con fi gu ra ti on re qui red for LAN and In ter net ac cess via the DHCP (Dy na mic Host Con fi gu ra ti on Pro to col). The DHCP ser ver in te gra ted into the PABX is ca pa ble of supp ly ing cor re spon ding con fi gu ra tions to se ve ral PCs (LAN-clients). IP ad dres ses are dy na mi cal ly al lo ca ted to the clients. This mode is re com men ded to dis pen se with the com pli ca ted, ma nu al con fi gu ra ti on of the IP ad dres ses for the PC that would ot her wi se be re qui red.

DNS ser ver

The DNS ser ver (Do main Name Ser ver) has the task of estab lis hing na mes wit hin a net work. In this pro cess the IP ad dres ses of the PCs (e.g. LAN clients) are trans for med into na mes. You must the re fo re know the name, and not the IP ad dress, of a PC that you wish to ac cess, or are se ar ching for. The DNS ser ver can also estab lish na mes that are not in clu ded in the lo cal net work.

DNS-Proxy

A proxy as su mes a sur ro ga te functi on for the lo cal net work (LAN) in a dif fe rent / ex ter nal net work. Here, the DNS proxy ac cepts the name que ries from the LAN client and sub mits them to the ex ter nal net work, e.g. In ter net, as its

Rou ter functions In tro duc ti on

own que ries. The proxy then ta kes the re spon se from the ex ter nal net work and for wards it to the LAN client that pla ced the ori gi nal que ry. In ad di ti on, the re sult from the que ry is sto red for a de fi ned time (con fi gu ra ble) to ans wer any sub se quent que ries of the same type.

Dy na mic DNS

Using Dy na mic DNS you can also of fer your own In ter net ser vi ces (e.g. WEB, FTP or e-mail ser vers). Usu al ly you must have a fi xed line or a set IP ad dress for this so that you can al ways be rea ched at the same URL (For ex am ple: www.bin tec-el meg.com). You are as sig ned a new IP ad dress by the ISP each time you dial in to the In ter net ho we ver. Using Dy na mic DNS you can link this au to ma tic (dy na mic) IP ad dress with a set name. The rou ter will then in form your Dy na mic DNS ser vi ce pro vi der (e.g. www.dyndns.org) au to ma ti cal ly of the new IP ad dress. In ter net en qui ries for your Web ser vi ces are then au to ma ti cal ly for war ded to your dy na mic IP ad dress via your ser vi ce pro vi der.

Using Dynamic DNS

· Con fi gu re an In ter net ad dress (URL) at a Dy na mic DNS ser vi ce pro vi der. For ex am ple, at

“www.dyndns.org” con fi gu re the ad dress “www.my-ho me pa ge.dyndns.org”.

· Con fi gu re the LAN client of the net work in which you wish to of fer your Web ser vi ces with a set IP ad dress.

For ex am ple, let’s say we want to con fi gu re a Web ser ver with the IP ad dress 192.168.1.200.

· Ac ti va te the Dy na mic DNS functi on in the rou ter and en ter the In ter net ad dress (URL) for your Dy na mic

DNS pro vi der (in the ex am ple here www.dyndns.org). Add the ne ces sa ry fil ters in the fi re wall to al low the PC with the Web ser vi ces to be rea ched from an ex ter nal lo ca ti on.

- Con fi gu re port map ping for Port 80 (HTTP pro to col) to IP ad dress 192.168.1.200.

- Con fi gu re the fil ters that per mit in co ming and outgoing WAN connections at Port 80.

· The rou ter will au to ma ti cal ly in form your Dy na mic DNS pro vi der of your cur rent dy na mic IP ad dress each

time a con nec ti on is set up with the In ter net. The in for ma ti on about the IP ad dress is trans fer red af ter set ting up a new In ter net con nec ti on, as well as du ring an ongoing Internet connection.

· A PC in the In ter net en ters the ad dress (URL) “www.my-ho me pa ge.dyndns.org”. In this way it rea ches

your Dy na mic DNS ser vi ce pro vi der. Your ser vi ce pro vi der re rou tes the con nec ti on to your cur rent dynamic IP address.

· Any in co ming con nec ti on is hand led in ac cor dan ce with the con fi gu red fil ters. In the ex am ple gi ven here

the in co ming WAN con nec ti on at port 80 is for war ded to the LAN client with the IP ad dress 192.168.1.200. The avai la ble In ter net si tes of your Web ser ver are dis play ed on the external PC.

NAT

NAT (Net work Adress Trans la ti on) pro tects the con nec ted LAN-clients against at tacks from the In ter net. Here, the in ter nal IP ad dres ses are not pas sed on to the In ter net. The rou ter car ries out the trans fer to the In ter net and dis tri bu tes the in co ming data pa ckets in the in ter nal sys tem. This only re qui res one ex ter nal IP ad dress. The in ter nal IP ad dres ses are pro tec ted from at tacks from out si de. The in ter nal IP ad dres ses can not be tar ge ted by ha ckers, as the se IP ad dres ses are non-ac ces si ble.

Packet Filter Firewall

The in te gra ted fil ter fi re wall pa cket also pro vi des you with en han ced se cu ri ty against at tacks from the In ter net. A fi re wall acts as a lo gi cal wall for data pa ckets bet ween the In ter net and the LAN which has »ho les« for cer tain pa ckets (fi re wall ru les, also known as fil ters), al lo wing the se pa ckets to pass through the wall. The fil ters are des cri bed by ru les who se con fi gu ra ti on re qui res ex pert knowled ge about the TCP/IP pro to col fa mi ly. The fi re wall of your PABX sys tem can be ea si ly con fi gu red using a Fil ter Wi zard in which you need to in di ca te (in plain text) whet her you wish to al low de fi ned ap pli ca tions ac cess to the In ter net.

In tro duc ti on Rou ter functions

Portmapping

You wish to ac cess your PC from an ex ter nal lo ca ti on via In ter net. Nor mal ly, ac cess via the fi re wall should be pro hi bi ted. When you use port map ping, ac cess to a rou ter port that you have en ab led is per mit ted from an ex ter nal lo ca ti on. The rou ter then for wards the ac cess re quest to the de fi ned port of the PC in the net work. A fi xed IP-ad dress must be as sig ned to this PC. When the PC re turns data pa ckets the IP ad dress and port num ber of the PC are re pla ced by the rou ter with the num ber for the port map ping port and the rou ter IP. For “out si ders” on the In ter net it then ap pe ars as though the re is only one con nec ti on to the rou ter.

Note Plea se note that when you use port map ping the fi re wall for the ports en ab led for this functi on is inef fec ti ve. The tar get PC in your LAN may then be sus cep ti ble to any po ten ti al at tacks.

Port map ping is prac ti cal when you wish to run a game ser ver on your own, for ex am ple.

· You can make this ser ver ac ces si ble via the In ter net to ot her users.

· Or, if you re qui re cer tain peer-to-peer file sha ring soft wa re that pro vi des grea ter downlo ad band width.

· When the cor re spon ding PC in your LAN is to be ac ces si ble from the In ter net (not pos si ble in the stan dard

con fi gu ra ti on with NAT). In this case, cer tain UDP and TCP ports must be re rou ted to a PC in the LAN.

RAS-Server

Ex ter nal ac cess is pro vi ded with user-name and pass word pro tec ti on. If the call is made from an ex ter nal lo ca ti on only, the pho ne num ber can also be mo ni to red as an ad ded pro tec ti on fea tu re. Ac cess can be en ab led for se ve ral users. A Wind ows en ab le (ac cess to com pu ter, fi les or prin ters) and In ter net en ab le can also be con fi gu red for each user.

Note Note that this ac cess por tal is not pro tec ted by a fi re wall!

A PC that di als into the lo cal net work via RAS is au to ma ti cal ly as sig ned an IP ad dress by the in te gra ted DHCP ser ver.

Time-controlled router inhibition

With the aid of the ca len dar, or a ma nu al functi on of the PABX sys tem, you can set the time(s) of day when In ter net ac cess is pos si ble (per mit ted). The se ti mes are de fi ned via the ca len dar as sig ned to the rou ter in the con fi gu ra ti on. Here, it is sti pu la ted that In ter net con nec tions can not be set up du ring night-time ope ra ti on. You should the re fo re set the swit ching ti mes ac cor ding ly. Star ting with Ver si on 4 of sys tem pho nes CS290/CS410, the te le pho nes can be swit ched using functi on keys on the pho ne; this set ting is then re tai ned un til the next ca len dar-ba sed swit cho ver.

LAN-CAPI

The pa cka ge in clu des a pro gram cal led »CAPI for LANs« for use in your net work. This soft wa re can be in stal led on any PC in the net work. This gi ves you the pos si bi li ty of run ning your CAPI ap pli ca ti on from a cen tral lo ca ti on via an in ter fa ce, i. e. the PABX sys tem. The re is no ISDN card re qui red for the PCs. Plea se note that soft wa re used for the CAPI ap pli ca ti on may re qui re cer tain li cen se agree ments with the soft wa re ma nu fac tu rer. The pro gram »CAPI in LAN« does not re qui re a li cen se to run.

Rou ter functions In tro duc ti on

+ 25 hidden pages

elmeg T444, T484 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual