I have a ZAPTEL interface card with 4 channel. If I call out through the zap channel to my mobile, the mobile starts ringing, but If I disconnect the internal phone that is my SIP client the mobile does not stop ringing. Anyone any suggestion of what am I doing wrong. Regards, Sanjay Rajdev Phone : +1 (877) 342 2329 x 1702 Fax : +1 (815) 261 5907 http://www.featherstoneinformatics.com Communications from Featherstone Informatics Group ("FIG") may transmit information that is confidential and privileged information of Featherstone Informatics Group ("FIG"). Unless you are the intended addressee, you may not use, copy or disclose to anyone this communication or any information transmitted by this communication. If you have received such communication in error, please advise the sender by e-mail and/or telephone and destroy this communication immediately. This communication and any information transmitted by this communication may also be considered "protected health information" as defined under the Health Insurance Portability and Accountability Act and its related regulations (a.k.a., HIPAA) or any other similar state law. Please exercise due care and ensure that you comply with its contractual and legal obligations.