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### Description Using t_set_fr within the LOCATION section of a slightly modified default kamailio.cfg only works if the contact is using UDP and not TCP.

``` # ----- tm params ----- # auto-discard branches from previous serial forking leg modparam("tm", "failure_reply_mode", 3) # default retransmission timeout: 30sec modparam("tm", "fr_timer", 30000) # default invite retransmission timeout after 1xx: 120sec modparam("tm", "fr_inv_timer", 30000)

# User location service route[LOCATION] { [...] # per subscriber ring time if ($avp(s:ring_time) != $null) { # xlog("setting time out to $avp(s:ring_time)"); t_set_fr($avp(s:ring_time) * 1000); } } ``` <!-- Explain what you did, what you expected to happen, and what actually happened. -->

#### Reproduction register an contact with UDP, set the timer to 5 seconds. observe kamailio terminates the invite after 5 seconds. then with TCP observe kamailio terminates the invite after 30 seconds (the default)

<!-- If the issue can be reproduced, describe how it can be done. -->

### Additional Information

* **Kamailio Version** - output of `kamailio -v` ``` version: kamailio 5.2.1 (x86_64/linux) 947769 flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144 MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: 947769 compiled on 20:48:14 Feb 26 2019 with gcc 4.8.5 ```

* **Operating System**: CentOS 7 <!-- Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...; Kernel details (output of `uname -a`) -->