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When Cisco Unity integrates with Cisco CallManager 4.1(3), the Cisco Unity port hangs after a blind transfer to Cisco Callmanager and the IPCC queue "Cisco Unity-CM TSP device (Cisco Unity port x): Failed blind transfer to extension xxxx. Reorder tone det

Core Issue

When a Cisco Unity server integrates with a Cisco CallManager cluster that runs software version 4.1(3) with Cisco Unity-CM TSP version 8.x, the Cisco Unity voicemail ports hang. When a call is made to the Cisco Unity, a reorder tone is heard. Sometimes the ports return to normal when the Cisco Unity Services are manually restarted.

When this issue occurs, this error appears in the event log:

Event Type: Error
Event Source: CiscoUnity_Miu
Event Category: Error
Event ID: 550
Date: >
Time: >
User: N/A
Computer: >
Cisco Unity's telephony component has encountered a serious error.

Explanation: No response is received on port 11 when a blind transfer is performed. This is a serious failure, and most likely the parties involved in the call are disconnected. In some cases, further calls on this port are not handled correctly.

After the error, this warning appears in the event log:

Event Type: Warning
Event Source: CiscoUnity_TSP
Event Category: None
Event ID: 109
Date: >
Time: >
User: N/A
Computer: >
Cisco Unity-CM TSP device 15 (Cisco Unity port 11): Failed blind transfer to extension 37100. Reorder tone detected. If this is a persistent problem, it may indicate a problem on the Cisco Unity and/or Cisco CallManager. Verify that transfers are working.


This issue is documented in Cisco bug ID CSCsg83588. The bug is fixed in Cisco CallManager version 4.3(0.32), 4.1(3)ES87, 4.2(3)ES15, 4.2(1)ES40.2 .

Refer this link for Voice Software Downloads.

Open a case with Cisco Technical Support with the TAC Service Request Tool in order to obtain an appropriate Engineering Special patch.

Problem Type

Call connection (Connection quality: One-way audio, no busy tone, dropped calls, etc.)

Call control software (CallManager, CallManager Express, ICS7750, SRST, SS7 call agents)

Voice applications (CRS, PA, CCM Plugins, CER, CCC, MeetingPlace, etc.)

Voicemail problems

Call Control


Call Connection

Reorder tone

Voicemail System


Failure Type

Drops out, times out, flaps, toggles, hangs, gets stuck, locks up, loops, temporary pause, stops responding, cuts short, etc.

When Problem Occurs

After call has been transferred

APIs & Telephony Service Providers

TAPI service provider (TSP)

CallManager Versions

CallManager 4.1

Unity Version

Unity 4.x

Voice Applications

Customer response applications