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Frequently asked questions about All-IP

With the LANCOM All-IP portfolio, you benefit from flexible interfaces for high-speed Internet access as well as models with WLAN or LTE. In addition, you get professional and secure telephony functions through the integrated Voice Call Manager and SBC (Session Border Controller).

Migration to All-IP

What is All-IP?

All over Europe, large telecommunications groups are currently converting their networks from analog or ISDN connections to IP / VoIP. These so-called "IP-based connections" unify the transmission of all types of information such as data, voice and video via the Internet Protocol (IP), which is why the term "All-IP" is used.

Why are purely Internet protocol-based connections being introduced?

The switch to IP-based connections significantly reduces the complexity of network infrastructures and enables uniform transmission of all types of information via a common communications protocol. At the same time, All-IP reduces the number of network components that need to be operated in previous ISDN infrastructures.

What is an IP-based fixed network connection?

An IP-based fixed network connection is a pure DSL connection, for example via ADSL or VDSL. Previous ISDN and analog lines are no longer required.

Can I continue to use an existing ISDN PBX after the switch to All-IP?

An All-IP connection is a pure DSL connection. To continue using an existing ISDN PBX on such a connection, an All-IP-capable router with at least one internal ISDN interface is required. As a "translator" between IP and ISDN including 2 ISDN interfaces, the LANCOM 1783 router series is ideally suited as an IP-ISDN gateway. This means that existing ISDN PBXs can continue to be used without having to replace devices. Thanks to integrated analog interfaces, analog terminals can also continue to be operated on All-IP connections in mixed mode. For the routers of the 1781 series, as well as the 1631E and 831A, LANCOM provides a corresponding software option, the LANCOM All-IP Option. This upgrades these routers to an IP-ISDN gateway.

Can an existing VoIP PBX continue to be used after the changeover to All-IP?

Yes, in this case no configuration change is necessary. Only the "SIP-ALG" function must be activated for the LANCOM router.

Which end devices can continue to be used without restriction?

LANCOM Business VoIP routers of the 1783 series allow mixed operation of VoIP, ISDN, and analog end-user devices, so that existing PBXs, telephones, fax machines, etc. can continue to be operated without replacing components. The routers of the 1781 series, the 1631E and 831A can be upgraded to an IP-ISDN gateway with the LANCOM All-IP Option, so that ISDN PBXs and telephones can also be operated at the ISDN port of these routers.

Will there be any loss of quality when switching to an IP-based connection if the bandwidth of my DSL line is not sufficient?

Voice data is real-time data, which is why special requirements must be met for the transmission of voice over IP networks. Thanks to the extensive Quality-of-Service functions of LANCOM All-IP solutions, the highest call quality is guaranteed. Dynamic bandwidth management, for example, guarantees minimum bandwidths per user. In addition, voice data packets are prioritized and downloads are slowed down when bandwidth is limited. In general, a comparatively low bandwidth of around 80 - 130 kbit/s is required for an IP-based telephone call.

Can calls be made with an IP-based connection in the event of a power failure?

Unlike previous analog and ISDN connections, telephony is not possible with IP-based connections in the event of a power failure. Routers, PBXs, VoIP and ISDN telephones all require a power supply. However, a power failure can be prevented by using a UPS or the LANCOM Battery Pack.

Will the management of the telephony configuration be operated separately from the rest of the router configuration for security reasons, so that an administrator can be assigned restricted rights?

The configuration wizards in LANconfig can be assigned to dedicated administrators. This means, for example, that local administrators can be assigned restricted rights with exclusive access to the telephony wizard.

Will the services I have been used to, such as payment via EC Cash Terminals, fire alarm systems, continue to be supported?

There are IP-capable EC Cash Terminals and fire alarm systems that can be operated reliably on the LAN port of the LANCOM router. LANCOM routers support the Clearmode protocol for ISDN data services. This means that ISDN data devices can continue to be operated after the changeover to an IP-based fixed-network connection, provided that they do not use X.31. If in doubt, customers should check with the relevant provider.

Which ISDN connections are supported?

ISDN S0 basic connections (multi-device and system connections) are supported.

Can LANCAPI still be used on IP-based connections for fax transmission?

No, we recommend using TE-Systems' XCAPI or IP-based Softfax applications instead. Learn more here: Knowledge-Base article

How can fax-over-IP be implemented on a LANCOM device?

Since the LANCOM LANCAPI does not offer a fax-over-IP function, it cannot be used together with the LANCOM All-IP Option. We therefore recommend fax server solutions from the manufacturers ActFax, GFI, Tobit and Shamrock. You can find an overview here: Knowledge-Base Article

LANCOM routers

Can the existing LANCOM router still be used when switching to an IP-based connection?

All current LANCOM routers are All-IP-capable and can continue to be used without any problems. Likewise, existing VoIP PBX infrastructures can continue to be used without configuration changes. If an existing ISDN PBX infrastructure is to continue to be used, the router can be upgraded with the LANCOM All-IP Option as an IP-ISDN gateway including common telephony functions.

What solution does LANCOM Systems envisage for the changeover to All-IP?

LANCOM customers will in many cases be spared the need to replace components: All current LANCOM routers are All-IP-capable and thus support VoIP telephony with VoIP telephones and VoIP PBXs. In addition, the LANCOM All-IP Option is available for the LANCOM routers of the 1781 series, as well as the LANCOM 1631E and 831A. This enables direct connection of existing ISDN PBXs including fax machines and ISDN telephones to the ISDN port of the LANCOM router. The LANCOM 1783 routers are delivered with the LANCOM All-IP option already integrated and have 2 ISDN interfaces and 2 analog interfaces. Here you will find an overview of possible scenarios.

Do LANCOM routers of the 1721 and 1821 series, the LANCOM 1722, LANCOM 1723, LANCOM 1724 or the LANCOM 1823 support All-IP?

No. We therefore recommend replacing existing devices with more powerful routers such as the LANCOM 1784VA or the 1783 or 1781 series. 

Is the VoIP fax protocol T.38 supported by All-IP-capable LANCOM routers?

Yes, the fax protocol T.38 is supported as of LCOS 9.10 RU1. This ensures error-free fax transmission to VoIP remote stations. If T.38 is not supported by the fax remote terminal, the fax is transmitted via G.711/T.30.

Do LANCOM All-IP-capable routers support VoIP, ISDN, and analog telephony terminals in parallel?

Yes. The LANCOM All-IP Option including the integrated Voice Call Manager automatically "translates" ISDN/analog voice data into IP packets. This means that voice data is transmitted in both directions without restriction, even between mixed remote stations.

Can internal numbers be configured with LANCOM All-IP-capable routers?

Yes, the internal number ranges can be freely configured.

Can LANCOM routers still provide the usual security?

LANCOM routers including the LANCOM All-IP Option are the professional and secure alternative to other routers on the market. All LANCOM routers are "Made in Germany" and are characterized by the highest quality as well as guaranteed freedom from backdoors. They are also equipped with professional security features such as support for IPSec VPN for securely encrypted data exchange with up to 25 remote sites simultaneously-ideal also for encrypted, cross-site telephony! In addition, an object-oriented stateful inspection firewall protects the network with intrusion prevention and denial of service protection. The optionally available LANCOM Content Filter effectively protects up to 100 users surfing the Internet.

Can an ISDN system connection be simulated with an All-IP-capable LANCOM router?

Yes, in addition to the multi-device connection, a system connection for a downstream ISDN PBX can also be represented. The LANCOM 1783 router series is equipped with 2 ISDN interfaces, and an S0 bus is supported on routers of the 1781 series.

Is it possible to define a dedicated LAN port on the LANCOM router for connecting a VoIP PBX?

In general, a VoIP PBX can be connected to any LAN port on the LANCOM router. If increased security is required, a dedicated LAN port can also be defined for the PBX connection.


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