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New Member

cme srst mode - no incoming/outgoing calls on Pri

I am trying to configure cme in fallback mode. The phones register ok in srst mode but i am unable to make any outgoing calls or receive ddi calls on my Pri.

My DDI range is 8460-8479 & for testing I am trying to get ext 8460 to ring on an ephone-dn of 3306

Can anyone help and tell me if there is something wrong or missing with my dial peers or config?

dial-peer voice 10 pots

description Incoming-DDI

incoming called-number 84[6-7].


port 0/1/1:23


dial-peer voice 20 pots

description Ougoing Calls

destination-pattern 9T

port 0/1/1:23


dial-peer voice 100 voip

description Incoming-Calls

translation-profile outgoing DDI

destination-pattern 84[6-7].

session target ipv4:

codec g711ulaw





srst mode auto-provision all

srst ephone template 1

srst dn template 1

srst dn line-mode dual

em logout 0:0 0:0 0:0

max-ephones 10

max-dn 15

ip source-address port 2000

no service directed-pickup

system message SRST Mode

time-zone 12

max-conferences 12 gain -6

web admin system name *** password ***



transfer-system full-consult

create cnf-files version-stamp 7960 Sep 15 2008 23:01:41

voice translation-rule 10

rule 1 /8460/ /3306/


voice translation-profile DDI

translate called 10


Re: cme srst mode - no incoming/outgoing calls on Pri

"sh isdn status" has multiple frame establish

assume yes above, "debug isdn q931" on incoming call shows setup, and then connect?

csim start 84?? allows you to dial ip phone

csim start 9localdial or 9longdistance allows you to ring those local or long distance numbers

New Member

Re: cme srst mode - no incoming/outgoing calls on Pri


in the Documentation (Configuring SRST Fallback Support), it says you shoud configure

srst mode auto-provision none


Does not include information for learned

ephones or learned ephone-dns in the running

configuration. Use this keyword when you want

Cisco Unified CME to provide SRST fallback services for Cisco Unified Communications Manager.

Mabye try this.



New Member

Re: cme srst mode - no incoming/outgoing calls on Pri

Drop the voice tranlation rule and try doing something like this. I have an office setup with CME fall back and found this to be easier

ephone-dn 8 dual-line

number 3306 secondary 8460

New Member

Re: cme srst mode - no incoming/outgoing calls on Pri

Thanks for all your responses.

I have actually managed to get this working, it turns out that my config was ok The problem was the way were testing the srst failover. The access lists we were using were only blocking communications between the phones & and CM whereas the Pri mgcp gateway was still able to communicate with the CM. As soon as I completely disconnected the WAN link I was able to make incoming outgoing calls on the pri in srst mode.