NO JOY Calls dropping

[Stewart]

PBX in a Flash Version  = 1.7.5.7 Running on *HARDWARE*          │
                                                                                  │  FreePBX Version          = 2.8.1.4                                │
                                                                                  │  Running Asterisk Version = 1.4.42                                  │
                                                                                  │  Asterisk Source Version  = 1.4.42                                  │
                                                                                  │  Dahdi Source Version    = 2.5.0.2+2.5.0.2                        │
                                                                                  │  Libpri Source Version    = 1.4.12                                  │
                                                                                  │  Addons Source Version    = 1.4.13                                  │
                                                                                  │  IP Address              = 172.16.43.2 on eth0                    │
                                                                                  │  Operating System        = CentOS release 5.7 (Final)              │
                                                                                  │  Kernel Version          = 2.6.18-274.3.1.el5 - 32 Bit

OK, so I'm getting dropped calls. I think it's primarily when calls are placed on hold.

Here is the relavent asterisk log:

[2014-10-23 16:26:03] VERBOSE[5123][C-00000ac3] pbx.c:    -- Executing [s@macro-auto-blkvm:1] Set("SIP/2103-0000176e", "__MACRO_RESULT=") in new stack
[2014-10-23 16:26:03] VERBOSE[5123][C-00000ac3] pbx.c:    -- Executing [s@macro-auto-blkvm:2] Set("SIP/2103-0000176e", "CFIGNORE=") in new stack
[2014-10-23 16:26:03] VERBOSE[5123][C-00000ac3] pbx.c:    -- Executing [s@macro-auto-blkvm:3] Set("SIP/2103-0000176e", "MASTER_CHANNEL(CFIGNORE)=") in new stack
[2014-10-23 16:26:03] VERBOSE[5123][C-00000ac3] pbx.c:    -- Executing [s@macro-auto-blkvm:4] Set("SIP/2103-0000176e", "FORWARD_CONTEXT=from-internal") in new stack
[2014-10-23 16:26:03] VERBOSE[5123][C-00000ac3] pbx.c:    -- Executing [s@macro-auto-blkvm:5] Set("SIP/2103-0000176e", "MASTER_CHANNEL(FORWARD_CONTEXT)=from-internal") in new stack
[2014-10-23 16:26:03] VERBOSE[5123][C-00000ac3] pbx.c:    -- Executing [s@macro-auto-blkvm:6] Macro("SIP/2103-0000176e", "blkvm-clr,") in new stack
[2014-10-23 16:26:03] VERBOSE[5123][C-00000ac3] pbx.c:    -- Executing [s@macro-blkvm-clr:1] Set("SIP/2103-0000176e", "SHARED(BLKVM,SIP/BH-CAB-SIP-I-0000176d)=") in new stack
[2014-10-23 16:26:03] VERBOSE[5123][C-00000ac3] pbx.c:    -- Executing [s@macro-blkvm-clr:2] Set("SIP/2103-0000176e", "GOSUB_RETVAL=") in new stack
[2014-10-23 16:26:03] VERBOSE[5123][C-00000ac3] pbx.c:    -- Executing [s@macro-blkvm-clr:3] MacroExit("SIP/2103-0000176e", "") in new stack
[2014-10-23 16:26:03] VERBOSE[5123][C-00000ac3] pbx.c:    -- Executing [s@macro-auto-blkvm:7] ExecIf("SIP/2103-0000176e", "0?Set(MASTER_CHANNEL(CONNECTEDLINE(num))=2103)") in new stack
[2014-10-23 16:26:03] VERBOSE[5123][C-00000ac3] pbx.c:    -- Executing [s@macro-auto-blkvm:8] ExecIf("SIP/2103-0000176e", "0?Set(MASTER_CHANNEL(CONNECTEDLINE(name))=Lily)") in new stack
[2014-10-23 16:26:31] VERBOSE[5123][C-00000ac3] res_musiconhold.c:    -- Started music on hold, class 'default', on SIP/BH-CAB-SIP-I-0000176d
[2014-10-23 16:26:35] VERBOSE[5123][C-00000ac3] res_musiconhold.c:    -- Stopped music on hold on SIP/BH-CAB-SIP-I-0000176d
[2014-10-23 16:26:35] VERBOSE[5123][C-00000ac3] pbx.c:    -- Executing [h@macro-dial:1] Macro("SIP/BH-CAB-SIP-I-0000176d", "hangupcall") in new stack
[2014-10-23 16:26:35] VERBOSE[5123][C-00000ac3] pbx.c:    -- Executing [s@macro-hangupcall:1] GotoIf("SIP/BH-CAB-SIP-I-0000176d", "1?theend") in new stack
[2014-10-23 16:26:35] VERBOSE[5123][C-00000ac3] pbx.c:    -- Goto (macro-hangupcall,s,3)
[2014-10-23 16:26:35] VERBOSE[5123][C-00000ac3] pbx.c:    -- Executing [s@macro-hangupcall:3] ExecIf("SIP/BH-CAB-SIP-I-0000176d", "0?Set(CDR(recordingfile)=)") in new stack
[2014-10-23 16:26:35] VERBOSE[5123][C-00000ac3] pbx.c:    -- Executing [s@macro-hangupcall:4] Hangup("SIP/BH-CAB-SIP-I-0000176d", "") in new stack
[2014-10-23 16:26:35] VERBOSE[5123][C-00000ac3] app_macro.c:  == Spawn extension (macro-hangupcall, s, 4) exited non-zero on 'SIP/BH-CAB-SIP-I-0000176d' in macro 'hangupcall'
[2014-10-23 16:26:35] VERBOSE[5123][C-00000ac3] pbx.c:  == Spawn extension (macro-dial, h, 1) exited non-zero on 'SIP/BH-CAB-SIP-I-0000176d'
[2014-10-23 16:26:35] VERBOSE[5123][C-00000ac3] app_macro.c:  == Spawn extension (macro-dial, s, 7) exited non-zero on 'SIP/BH-CAB-SIP-I-0000176d' in macro 'dial'
[2014-10-23 16:26:35] VERBOSE[5123][C-00000ac3] pbx.c:  == Spawn extension (ext-group, 926, 11) exited non-zero on 'SIP/BH-CAB-SIP-I-0000176d'

and I've attached a wireshark capture.

As you can see, the caller is placed on hold at 16:26:31 and 4 seconds later at 16:26:35 the system hangs up. The Wireshark capture that I've attached also shows the system performing the hangup. The totality of the call was just under 34 seconds. Any help would be appreciated.