CUCM integration with Motorola Tetra Radio over QSIG via MGCP

Thirruselvaa Ramanathan · ‎10-26-2020

Hi,

Am integrating Cisco CUCM 12.5 with Radio from Motorola over MGCP gateway and I am getting the below error message for incoming calls [from Radio to Cisco IP phones] whereas the outgoing call from Cisco IP phone to Radio is working fine.

Calling number - 400422 (Radio)

Called Number - 638760 (Cisco IP Phone)

They are calling as 638760 from Radio and there is a media converter which appends 14638760 to it.

We are receiving the below debug isdn q931 output in Voice Gateway

Cause i = 0x80AC - Requested circuit/channel not available

Oct 24 11:43:54.058: ISDN Se0/1/0:15 Q931: RX <- SETUP pd = 8 callref = 0x755D
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA9839F
Exclusive, Channel 31
Calling Party Number i = 0x80, '400422'
Plan:Unknown, Type:Unknown
Called Party Number i = 0x80, '14638760'
Plan:Unknown, Type:Unknown
Sending Complete
Oct 24 11:43:54.059: ISDN Se0/1/0:15 Q931: TX -> RELEASE_COMP pd = 8 callref = 0xF55D
Cause i = 0x80AC - Requested circuit/channel not available

Below is the output for debug isdn q921

Oct 24 12:20:30.796: ISDN Se0/1/0:15 Q921: Net TX -> RRp sapi=0 tei=0 nr=33
Oct 24 12:20:30.801: ISDN Se0/1/0:15 Q921: Net RX <- RRp sapi=0 tei=0 nr=33
Oct 24 12:20:30.801: ISDN Se0/1/0:15 Q921: Net TX -> RRf sapi=0 tei=0 nr=33
Oct 24 12:20:30.806: ISDN Se0/1/0:15 Q921: Net RX <- RRf sapi=0 tei=0 nr=33

I tried changing the order top down and bottom up, but it didn't help me.

Thanks,

Thirruselvaa

Nithin Eluvathingal · ‎10-26-2020

whats the status of ISDN is it MULTIPLE_FRAME_ESTABLISHED

Mohammed al Baqari · ‎10-26-2020

Hi,

Make sure that ISDN status is multiple_frame_established. Also, make sure
that ISDN channel order selection matches with PSTN provider.

**** please remember to rate useful posts

Thirruselvaa Ramanathan · ‎10-26-2020

Hi,

This is not from PSTN.. It is a QSIG integration between Motorola Radio and Cisco IP Telephony. The status of ISDN is MULTIPLE_FRAME_ESTABLISHED.

I am able to perform calls from Cisco IP Phone to Radio and it is working fine.

The calls from Radio to Cisco IP phone is not working

Below is the status of ISDN Q931,

VG-XXX-450-PBX-03#sh isdn status
Global ISDN Switchtype = primary-qsig

%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 0. Layer 3 output may not apply

ISDN Serial0/1/0:15 interface
******* Network side configuration *******
dsl 0, interface ISDN Switchtype = primary-qsig
**** Master side configuration ****
L2 Protocol = Q.921 0x0000 L3 Protocol(s) = CCM MANAGER 0x0003
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 0 CCBs = 0
The Free Channel Mask: 0xFFFF7FFF
Number of L2 Discards = 0, L2 Session ID = 156
Total Allocated ISDN CCBs = 0

Thanks,

Thirruselvaa

Nithin Eluvathingal · ‎10-26-2020

How many channels been configured on both devices. The call is landing on 31st channel asper your first post.

Thirruselvaa Ramanathan · ‎10-27-2020

Yes correct. There are 30 channels configured.

controller E1 0/1/0
pri-group timeslots 1-31 service mgcp

Thanks,

Thirruselvaa

Nithin Eluvathingal · ‎10-27-2020

what Router model is this ?

Does the router has sufficient DSP for 30 channels.

Thirruselvaa Ramanathan · ‎10-27-2020

Hi,

This is Cisco Analog VG 450. As VG FXS modules does have its own DSP, we are using T1/E1 module in Analog VG which has PVDM4-256 already.

VG-XXX-450-PBX-03#sh inventory

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
INFO: Please use "show license UDI" to get serial number for licensing.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

NAME: "Chassis", DESCR: "Cisco VG450 Chassis"
PID: VG450/K9 , VID: V01 , SN: FDO234XXXX

NAME: "Power Supply Module 0", DESCR: "Unknown Power Supply"
PID: ISR4XXX-PWR-UNKNOWN, VID: , SN:

NAME: "Power Supply Module 1", DESCR: "650W AC Power Supply Module for Cisco ISR4460"
PID: PWR-4460-650-AC , VID: V02 , SN: DCI233XXXX

NAME: "Fan Tray", DESCR: "Cisco ISR4460 Forward-flow Fan Assembly"
PID: ACS-4460-FANASSY , VID: , SN:

NAME: "module 0", DESCR: "Cisco VG450 Built-In NIM controller"
PID: VG450/K9 , VID: , SN:

NAME: "NIM subslot 0/1", DESCR: "NIM-2MFT-T1/E1 - T1/E1 Serial Module"
PID: NIM-2MFT-T1/E1 , VID: V05 , SN: FOC22XXXX

NAME: "subslot 0/1 db module 0", DESCR: "PVDM4-256 Voice DSP Module"
PID: PVDM4-256 , VID: V02 , SN: FOC22XXXX

NAME: "NIM subslot 0/0", DESCR: "Front Panel 6 ports Ten/Gigabitethernet Module"
PID: VG450-4x1G-2xTG , VID: V01 , SN:

NAME: "module 1", DESCR: "Cisco VG450 Built-In SM controller"
PID: VG450/K9 , VID: , SN:

NAME: "SM subslot 1/0", DESCR: "SM-X-72FXS Voice Analog Service Module"
PID: SM-X-72FXS , VID: V02 , SN: FOC232XXXX

NAME: "module 2", DESCR: "Cisco VG450 Built-In SM controller"
PID: VG450/K9 , VID: , SN:

NAME: "module 3", DESCR: "Cisco VG450 Built-In SM controller"
PID: VG450/K9 , VID: , SN:

NAME: "SM subslot 3/0", DESCR: "SM-X-72FXS Voice Analog Service Module"
PID: SM-X-72FXS , VID: V02 , SN: FOC23XXXX

NAME: "module R0", DESCR: "Cisco VG450 Route Processor"
PID: VG450/K9 , VID: V01 , SN: FDO23XXXX

NAME: "module F0", DESCR: "Cisco VG450 Forwarding Processor"
PID: VG450/K9 , VID: , SN:'

As the call from Cisco to Radio is already working and only the issue is from Radio to Cisco IP phones, with error message, Cause i = 0x80AC - Requested circuit/channel not available not sure where the issue is now.

Thanks,

Thirruselvaa

Nithin Eluvathingal · ‎10-27-2020

Are u able to see all serial ports ?

Thirruselvaa Ramanathan · ‎10-27-2020

Yes. I am able to see all the 30 ports.

VG-XXX-450-PBX-03#sh ip int brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0/0 10.44.XX.XX YES NVRAM up up
GigabitEthernet0/0/1 unassigned YES NVRAM administratively down down
GigabitEthernet0/0/2 unassigned YES NVRAM administratively down down
GigabitEthernet0/0/3 unassigned YES NVRAM administratively down down
Te0/0/4 unassigned YES NVRAM administratively down down
Te0/0/5 unassigned YES NVRAM administratively down down
Service-Engine0/1/0 unassigned YES NVRAM up up
Serial0/1/0:0 unassigned YES unset down down
Serial0/1/0:1 unassigned YES unset down down
Serial0/1/0:2 unassigned YES unset down down
Serial0/1/0:3 unassigned YES unset down down
Serial0/1/0:4 unassigned YES unset down down
Serial0/1/0:5 unassigned YES unset down down
Serial0/1/0:6 unassigned YES unset down down
Serial0/1/0:7 unassigned YES unset down down
Serial0/1/0:8 unassigned YES unset down down
Serial0/1/0:9 unassigned YES unset down down
Serial0/1/0:10 unassigned YES unset down down
Serial0/1/0:11 unassigned YES unset down down
Serial0/1/0:12 unassigned YES unset down down
Serial0/1/0:13 unassigned YES unset down down
Serial0/1/0:14 unassigned YES unset down down
Serial0/1/0:15 unassigned YES unset up up
Serial0/1/0:16 unassigned YES unset down down
Serial0/1/0:17 unassigned YES unset down down
Serial0/1/0:18 unassigned YES unset down down
Serial0/1/0:19 unassigned YES unset down down
Serial0/1/0:20 unassigned YES unset down down
Serial0/1/0:21 unassigned YES unset down down
Serial0/1/0:22 unassigned YES unset down down
Serial0/1/0:23 unassigned YES unset down down
Serial0/1/0:24 unassigned YES unset down down
Serial0/1/0:25 unassigned YES unset down down
Serial0/1/0:26 unassigned YES unset down down
Serial0/1/0:27 unassigned YES unset down down
Serial0/1/0:28 unassigned YES unset down down
Serial0/1/0:29 unassigned YES unset down down
Serial0/1/0:30 unassigned YES unset down down
Service-Engine1/0/0 unassigned YES unset up up
Service-Engine3/0/0 unassigned YES unset up up
GigabitEthernet0 unassigned YES NVRAM administratively down down

Any advise please.

Thanks,

Thirruselvaa