56.1. CTI System Overview

The Abilis CTI (Computer Telephony Integration) System module (CTISYS) works at the network (level 3) and transport-level (level 4) of the ISO-OSI model.

The CTISYS is a smart switch able to exchange both circuit-switched telephony channels (TDM) and packet-switched (VoIP, VoN) channels with all the reasonable degrees of freedom:

The table below shows the different types of connection supported by the CTI System:

Table 56.1. CTI connection side types

DATAData: data connection (HDLC framing) from Abilis CPX to ISDN port or from ISDN port to Abilis CPX.
VVoice: digital voice stream.
CCluster: compressed voice stream in form of data packets.
IIAX: connection to a device that supports IAX protocol.
SSIP: connection to a device that supports SIP protocol.
DDISA: connection to the Direct Inward System Access.
AAdvanced Services: CtiVm, CtiVr, CtiMix, CtiVo

All the possible combinations of connections are possible; for more details refer to CTIR section; IAX, SIP and DISA routings are explained in the corresponding chapters.

The bandwidth depends on the used coder: G.711, G.726, G.727, GSM6.10, Spirit, G.723.1, G.729A, Transp

On an IP network the bandwidth is 22 kbps for the first call, the following simultaneous calls (from the same source to the same destination) add a bandwidth of only 8,8 kbps for each single call.

To operate the CTI system module you must configure the necessary elements of the system:


To make the CTISYS system working it isn't necessary to configure all resources of the system, but only those you need.


For some resources is needed to have a licence (Use the command display licence permissions to see if you have an active license for the necessary resource).