Hi, I posted a few days ago about a problem I'm having with my Cisco 2611, NM-2V and VIC-2BRI-S/T-TE. I'm trying to call the Cisco with my mobile phone and to call to the mobile phone with a softphone. The softphone is SJPhone running on a Windows laptop, although I've tried other softphones. The packets are moving fine from laptop to 2611. When I speak into the laptop's microphone I can hear the sound excellently on my mobile. I can also see these packets in Ethereal. The 2611 also claims to be transmitting RTP packets. However I can't see these packets in Ethereal and they don't appear to be received by the softphone -- when I speak into the mobile phone's microphone I don't hear anything on the laptop. Here's an example of the debug voice rtp messages: *Mar 3 03:55:22.269: RTP(2592): fs rx d=192.168.1.101(16384), pt=8, ts=24E0, s7 *Mar 3 03:55:22.281: RTP(8426): fs tx d=192.168.1.101(16384), pt=8, ts=293DC956 *Mar 3 03:55:22.301: RTP(8427): fs tx d=192.168.1.101(16384), pt=8, ts=293DC9F6 *Mar 3 03:55:22.321: RTP(8428): fs tx d=192.168.1.101(16384), pt=8, ts=293DCA96 In fact, the *only* packets sent from the 2611 are these (transcription from Ethereal screen): SIP/SDP INVITE SIP ACK RTCP Sender Report RTCP Sender Report SIP 200 OK RTCP Receiver Report RTCP Receiver Report ICMP Destination Unreachable (over a 10-second call) That last packet is a UDP Destination Unreachable error. Source port 17923, destination port 16387. I've pasted in my entire config (the only lines that are removed are the ones containing passwords). I'm positive that there's no kind of firewall running on the Windows laptop. Could there be some kind of problem on the 2611 that causes it not to send the packets? Thanks, Guan Current configuration : 2203 bytes ! version 12.3 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption no service dhcp ! hostname jefferson ! boot-start-marker boot-end-marker ! ! enable secret ! clock timezone CET 1 clock summer-time CEST recurring no aaa new-model ip subnet-zero no ip routing no ip cef ! ! ip domain name unicast.org ip name-server 192.168.1.103 ip name-server 212.54.64.170 ip name-server 212.54.64.171 ! isdn switch-type basic-net3 ! ! ! voice class codec 1 codec preference 1 g711alaw codec preference 2 g729br8 codec preference 3 g729r8 codec preference 4 g723r63 codec preference 5 g723r53 codec preference 6 g711ulaw ! voice class codec 2 codec preference 1 gsmfr codec preference 2 gsmefr ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 no ip address ! interface Ethernet0/0 ip address 192.168.1.102 255.255.255.0 ip access-group 1 in ip access-group 1 out no ip route-cache no ip mroute-cache full-duplex no cdp enable ! interface BRI0/0 no ip address no ip route-cache no ip mroute-cache shutdown isdn switch-type basic-net3 no cdp enable ! interface Ethernet0/1 ip address 192.168.1.102 255.255.255.0 no ip route-cache no ip mroute-cache shutdown full-duplex no cdp enable ! interface BRI1/0 no ip address no ip route-cache isdn switch-type basic-net3 isdn incoming-voice voice isdn answer1 32580668 isdn calling-number 32848286 ! interface BRI1/1 no ip address no ip route-cache shutdown isdn switch-type basic-net3 ! ip http server ip classless ! ! access-list 1 permit any ! ! voice-port 1/0/0 compand-type a-law cptone DK ! voice-port 1/0/1 compand-type a-law cptone DK ! ! ! dial-peer voice 2 pots application session incoming called-number 32580668 destination-pattern T direct-inward-dial port 1/0/0 ! dial-peer voice 1 voip application session destination-pattern 32580668 voice-class codec 1 session protocol sipv2 session target sip-server session transport udp no vad ! sip-ua sip-server ipv4:192.168.1.101 ! ! line con 0 exec-timeout 0 0 line aux 0 line vty 0 4 ! password login ! ! ! end
Can you post a text dump of the ICMP packet(print packet in ethereal)? Is there any NAT between the GW and the SoftPhone? Does the PC running the SoftPhone running any type of firewall application? What is the ip address of the PC? Rik Bain Rik Bain
There's no firewall or NAT and the IP address of the PC is 192.168.1.101, but I fixed the problem thanks to someone who emailed me. The trick was to add: ip routing ! interface ethernet0/0 ip route-cache to the config. Guan
