The C1140/41 models are designed specifically for ISDN and IP. As an ISDN codec with IP Control for management or as a codec for both ISDN and IP. The ISDN stack is based on MAYAH’s long experience in this field, with many d-channel protocols and international connectivity. IP support is the same as other C11 models. They can connect to portable devices such as Sporty and Flashman II as well as other, third party vendors and can talk to RTP and SIP; the basic technology for corporate and public networks.
The C1140 and the C1141 are bi-directional codecs, able to encode and decode simultaneously.