<div dir="ltr">Hello all<br><br>I am wondering of any one faced the following problem, I have a 3900 router with CME 7.1 , 8 FXO ports connecting to PSTN , 4 for incoming calls and 4 ports for outgoing PSTN calls.<br>when ever the users dials towards PSTN from ( Cisco IP phones 7914 series ) the call drops after 14 seconds, when they try again it works fine, incoming calls from PSTN has no problems.<br>
<br>Here is my current configuration :<br><br><br>trunk group Cairo_PSTN<br> max-calls voice 8<br> hunt-scheme sequential both up<br>!<br>!<br>!<br>voice-card 0<br>!<br>!<br>voice call send-alert<br>no voice call carrier capacity active<br>
voice rtp send-recv<br>!<br>voice service voip<br> allow-connections h323 to h323<br> allow-connections h323 to sip<br> allow-connections sip to sip<br> fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback none<br> h323<br>
!<br>voice class codec 101<br> codec preference 1 g711ulaw<br> codec preference 2 g729r8<br>!<br><br><br>voice class custom-cptone Egypt<br> dualtone disconnect<br> frequency 450<br> cadence continuous 250<br><br><br>voice-port 0/2/0<br>
supervisory disconnect dualtone mid-call<br> supervisory custom-cptone Egypt<br> cptone EG<br> timeouts wait-release 15<br> connection plar opx 5830<br> impedance complex5<br><br><div class="im"> caller-id enable<br>!<br>
voice-port 0/2/1<br>
trunk-group Cairo_PSTN<br> supervisory disconnect dualtone mid-call<br> supervisory custom-cptone Egypt<br> cptone EG<br> timeouts wait-release 15<br> connection plar opx 5818<br> impedance complex5<br><br></div><div class="im">
caller-id enable<br>
!<br>voice-port 0/2/2<br> trunk-group Cairo_PSTN<br> supervisory disconnect dualtone mid-call<br> supervisory custom-cptone Egypt<br> cptone EG<br> timeouts wait-release 15<br> connection plar opx 5818<br> impedance complex5<br>
</div><div class="im">
caller-id enable<br>!<br>voice-port 0/2/3<br> trunk-group Cairo_PSTN<br> supervisory disconnect dualtone mid-call<br> supervisory custom-cptone Egypt<br> cptone EG<br> timeouts wait-release 15<br> connection plar opx 5818<br>
impedance complex5<br></div><div class="im"> caller-id enable<br>!<br>voice-port 0/3/0<br> trunk-group Cairo_PSTN<br> supervisory disconnect dualtone mid-call<br> supervisory custom-cptone Egypt<br> cptone EG<br> timeouts wait-release 15<br>
connection plar opx 5818<br>
impedance complex5<br></div><div class="im"> caller-id enable<br>!<br>voice-port 0/3/1<br> trunk-group Cairo_PSTN<br> supervisory disconnect dualtone mid-call<br> supervisory custom-cptone Egypt<br> cptone EG<br> timeouts wait-release 15<br>
connection plar opx 5818<br>
impedance complex5<br></div><div class="im"> caller-id enable<br>!<br>voice-port 0/3/2<br> trunk-group Cairo_PSTN<br> supervisory disconnect dualtone mid-call<br> supervisory custom-cptone Egypt<br> cptone EG<br> timeouts wait-release 15<br>
connection plar opx 5818<br>
impedance complex5<br></div><div class="im"> caller-id enable<br>!<br>voice-port 0/3/3<br> trunk-group Cairo_PSTN<br> supervisory disconnect dualtone mid-call<br> supervisory custom-cptone Egypt<br> cptone EG<br> timeouts wait-release 15<br>
connection plar opx 5818<br>
impedance complex5<br></div> caller-id enable<br>!<br>!<br><br>Please advise if any one have had this problem before<br clear="all"><br>-- <br>Hawk<br>
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