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New Member

Cisco 2811 + Siemens PBX over QSIG PRI

There's Cisco 2811 with CME connected with Siemens PBX over E1 with QSIG signaling. Some Cisco ip phones are connected to CME.

PBX sends caller-id to Cisco( shown in tracer on PBX), but it's not displayed on the ip phones.

When call is between ipphones connected to Cisco, caller-id is displayed.

Seems that Cisco does not process caller-id recieved from PBX.

sh run


isdn switch-type primary-qsig

voice-card 0

no dspfarm


voice service pots

voice class codec 729

codec preference 1 g729r8 bytes 40

codec preference 2 g729br8

codec preference 3 g711alaw

codec preference 4 g711ulaw


voice class codec 711

codec preference 1 g711ulaw

codec preference 2 g711alaw

codec preference 3 g729r8 bytes 40



voice class permanent 1

signal timing oos restart 50000

signal timing oos timeout disabled

signal keepalive disabled

signal sequence oos no-action



voice class h323 1

h225 timeout tcp establish 3

controller E1 0/0/0

pri-group timeslots 1-31

description line


interface Serial0/0/0:15

no ip address

encapsulation hdlc

isdn switch-type primary-qsig

isdn overlap-receiving

isdn incoming-voice voice

isdn send-alerting

isdn contiguous-bchan

isdn bchan-number-order ascending

isdn sending-complete

no cdp enable



voice-port 0/0/0:15


ccm-manager config





load 7960-7940 P00303020214

load 7914 S00103020002

load 7912 CP7912060000SCCP050124A.sbin

max-ephones 42

max-dn 144

ip source-address port 2000

timeouts interdigit 5

network-locale RU

time-format 24

date-format dd-mm-yy

create cnf-files version-stamp Jan 01 2002 00:00:00

keepalive 10

voicemail 400

max-conferences 16 gain -6

call-forward pattern .T




transfer-system full-consult

transfer-pattern .T

log table max-size 100



ephone-dn 1 dual-line

number 3042


How could it be fixed?

New Member

Re: Cisco 2811 + Siemens PBX over QSIG PRI

In other words

caller-id is not displayed when call is originaly from any phone that is connected to PBX. While caller is is displayed if it is originaly from any phone connected to Cisco router.

PBX and Cisco are connected through QSIG+PRI, debug at PBX has shown that caller-id is sent to Cisco, but it does not process it. A part of sh run is shown above. What could be a reason of that?

Thank you.

Re: Cisco 2811 + Siemens PBX over QSIG PRI

What Siemens switch is it? I know the Rolm switch 9005 will not handle callerID if you are using older DID copper trunks for incoming. If you are using PRI for incoming, callerID will work. CallerID also only works from Rolm phone to Rolm Phone...

If you are doing a Point to Point from the Rolm to the CallManager, does the Rolm T1 support Qsig? I know cisco will, but if Rolm T1 card does not, no caller ID information will pass...

New Member

Re: Cisco 2811 + Siemens PBX over QSIG PRI

Typically Q.SIG on legacy PBXs pass caller-id info in the "Facility" Information Element. CME uses H.323 and H.323 supports caller-id via "Display ID" Information Element. If you want to receive caller-id via the Facility Information Element you need to be using MGCP on CM 3.3 or later.

To be sure issue the "debug isdn q931" command or "debug h245 q931" on the gateway and look for the information follow. The first partial debug shows q931 with the Display ID IE. The second partial debug show q931 with the Facility IE, both of which contain the caller-id info.

CCM|Ie - Q931ChannelIdIe IEData= 18 03 A9 83 97

CCM|Ie - Q931DisplayIe IEData= 28 10 4E 6F 72 6D 61 20 57 61 73 68 69 6E 67 74 6F 6E

CCM|Ie - Q931CallingPartyIe IEData= 6C 0C 00 81 37 30 33 34 36 34 35 35 34 35

CCM|Ie - Q931CalledPartyIe IEData= 70 0B A1 37 30 33 34 35 31 38 31 38 34

CCM|MMan_Id= 0. (iep= 0 dsl= 100 sapi= 0 ces= 0 IpAddr=22011fac

*Nov 18 21:59:12.391: ISDN Se0/0/0:23 Q931: RX <- SETUP pd = 8 callref = 0x03C2

Bearer Capability i = 0x8090A2

Standard = CCITT

Transfer Capability = Speech

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0xA98383

Exclusive, Channel 3

Facility i = 0x9F8B0100A10F02010106072A8648CE1500040A0100

Protocol Profile = Networking Extensions


Component = Invoke component

Invoke Id = 1

Operation = InformationFollowing (calling_name)

Name information in subsequent FACILITY message